XXR 527/530 Gallery

[swarb]

Originally Posted by SHWNBRZ

I have a set of RCE Yellows (.8" drop) and am seriously considering getting a set of XXR 527 in 17x8.25 +35. I am looking at going with Michelin Pilot Super Sports in 235/45/17's or 245/40/17's.

I am aware about the tire spec's and what not. Specs say, I should go with the 245/40/17's. If I go with those tires, should I go with the XXR 527's in 17x8.75 +35 instead? Would the 17x8.25 +35 be just fine?

I have a set of SPC Camber Bolts and SPC Adjustable Rear LCA's that needs to be installed as well. I'm going for the alignment specs close to -2.0 Front and -1.5 Rear. Supposedly, using the SPC Camber Bolt on the bottom, and using the 14mm OEM bolt from the bottom and switching it with the top 16mm bolt will give me more camber than the -1.2 to -1.5 camber that the SPC Camber Bolt originally allows for when the instructions are followed....that is, replacing the bottom bolt with the SPC Camber Bolt and leaving the 16mm bolt up top.

235/45 would be slightly too tall but still works fine. If you are going supercharger, go for a wider and more common setup like 17x9 +35 245/40. 17x8.75 +35 and 245/40 mpss sounds like the right setup for you. The camber settings, with two bolts and the small drop that you have from the springs, you will be able to get 2.0 camber pretty easily.

[SHWNBRZ]

Thanks for the input swarb. Another upside of going 235/45 is it helps with reducing the wheel/tire-fender gap. It'd have a similar gap as if I would have went with a 1" drop...plus I get to increase the ride height a smidge leaving room for a front lip, side skirts, rear spats and not have to worry about scraping as much...every little bit helps.

Downside is actual distance traveled vs. the odometer reading gets affected.

I guess I'm worried about clearance issues so I'd like to be on the conservative side of things...so with -2.0F/ -1.5R, XXR 17x8.75 +35 and MPSS in 245/40/17's...everything should clear from lock to lock....no rubbing when driven hard with RCE Yellows (.8" drop) right?

Thanks again!

[swarb]

@SHWNBRZ yeah, you will be fine. Extreme cornering like running from the cops, you might rub very slightly, but regular extreme cornering like autocross you are fine.

Good idea on the taller tire. Stock diameter is 24.6 or 24.7, 235/45 is about 25.4 inches and 245/40 is 25 inches. I would suggest 245's or bigger because of the supercharger in your future. Maybe look into 255/40's if you want a taller tire. Good luck and post some pics when you get them!

[SHWNBRZ]

Originally Posted by swarb

@SHWNBRZ yeah, you will be fine. Extreme cornering like running from the cops, you might rub very slightly, but regular extreme cornering like autocross you are fine.

Good idea on the taller tire. Stock diameter is 24.6 or 24.7, 235/45 is about 25.4 inches and 245/40 is 25 inches. I would suggest 245's or bigger because of the supercharger in your future. Maybe look into 255/40's if you want a taller tire. Good luck and post some pics when you get them!

Not planning on running from the cops. If I run from them, they're going to end up taking me to my mom (she works as a nurse for the county jail and deals with people who the 5-0 bring in).

That's another consideration for going 235/45/17....less width than 245/40/17 (less with by .4" or .2" or about 5mm gained clearance) for clearing the spring perch. Also, taller tire should help with ride comfort. IIRC, regular WRX's come with 235/45/17's as stockers and those put out 268/258 on the crank. Granted, the contact patch on the 235's all get used for putting power down....because AWD.

I am waiting on a Jackson Racing Supercharger and will be running the CARB tune so it shouldn't put an extra 10-20hp/tq that people get from having a custom tune. I'm totally fine with whatever I get with the CARB tune for the supercharger

I could also go 235/40/17....but I'll have to switch over to a Bridgestone RE11 if I go that route.

Thing is, I have another $70 card coming in from America's tire from purchasing asset of tires for the Oddysey. I'll have $140 Ito use off of rebates that I can just plop down at Americas Tires counter. So as much as possible, I would like to get something they already have....though I'm sure they can order the RE11's for me. Another thing is that I'm planning on pulling the trigger on the tires next time they have another promo... so I drop $140 in rebate card (paying for 3 tires out of my pocket and getting 4) and then getting another $70 card in the mail. I'd like to go with this for the best bang for the buck. Heck, I've already spent $1500 out of my pocket for tires already.

Now if I go with 235/40/17 RE11's, I'm going with a 24.4" diameter tires vs 24.6", I lose both on ground clearance and increase the gap between the tire/wheel and fenders. Loss is negligible really. What I gain by going with this is I gain more clearance between the spring perch and tire vs. going with the wider 245/40/17's so I wouldn't have to worry about ever rubbing.

From reading reviews, it's just that the PSS' seems like it's the way to go...given the review between the PSS 245/40/17 and the RE11 in 235/40/17....ratings from tirerack indicate that the PSS's are the better tires. Only issue I have is the risk of rubbing.

If I go with 235's, I might as well go with XXR 17x8.25's to cut down on weight some. Will I still be okay with 245/40/17's with the 17x8.25's? If I go 245's, I may have to go with 18x8.75's so the tires are better supported by the rims. Wider wheels/tires also supposedly decrease the turn in feel...but at this point, I'm thinking...how much more could you take away from going 235 to 245? I know it'll be noticeable coming from 215 to 234/245.

I could also just go with 18x8.75 and 235/40/18...and it'll work just fine. I'd have added more weight in both tires and wheels...though it will give me an option for mounting 245/40/18's later down the line.

I guess if anything, I can add spacers right? But then that increases the poke a smidge....

I'm probably overthinking things and am creating my own dilemma but I just want to do it once by doing it right.

At this point I'm leaning towards going 17x8.25 +35, 235/45/17 for the sake of spring perch clearance/better ride comfort/more ground clearance/less gap between fenders and the tires with the only trade off of the odometer being off by 2mph at 70. Next choice is the 235/40/17 for better spring perch clearance and steering feel vs. the 245/40/17.

Now, if the PSS' came in 235/40/17's....I'd have gone with that as opposed to running that size with RE11's. I'm sure the RE11's are badass tires as well, but the PSS' are my first choice.

[swarb]

@SHWNBRZ you ARE overthinking it. You won't rub on 17x8.75 +35 on 245/40-17. Not enough to worry about anyways. 17x9 +35 and 245/40 is probably the most common setup for these cars. Don't worry about weight from the wheel or tire, those 1-2-3-4lbs means nothing when you have a supercharger and no traction. Look for people with the 17x9 +35 setup, most run 245/40, ask RCE, they could probably give you some info and reassurance that they won't rub. RE11 is a 200 treadwear rating tire, and max performance, don't expect it to last more than 15k miles. I would also advise you to look into hankook v12 evo 2 if you want a more budget oriented performance tire that lasts 20k+.

Get the 8.75 wheels, they are better for the supercharger and fat tires... Tires, 245/40, 235/45 or 255/40. My choice would be 245 or 255.

[SHWNBRZ]

Originally Posted by swarb

@SHWNBRZ you ARE overthinking it. You won't rub on 17x8.75 +35 on 245/40-17. Not enough to worry about anyways. 17x9 +35 and 245/40 is probably the most common setup for these cars. Don't worry about weight from the wheel or tire, those 1-2-3-4lbs means nothing when you have a supercharger and no traction. Look for people with the 17x9 +35 setup, most run 245/40, ask RCE, they could probably give you some info and reassurance that they won't rub. RE11 is a 200 treadwear rating tire, and max performance, don't expect it to last more than 15k miles. I would also advise you to look into hankook v12 evo 2 if you want a more budget oriented performance tire that lasts 20k+.

Get the 8.75 wheels, they are better for the supercharger and fat tires... Tires, 245/40, 235/45 or 255/40. My choice would be 245 or 255.

I had a feeling. LoL!

Only thing with 8.75's is that they only come in 18's.

I'll be looking into those as well for the sake of going with 245/35/18 (24.8" vs. the 215's 24.6") . Seems like the 245/40/18's are on the huge side at 25.7" diamter.

I guess there's also tire wear to consider. Suddenly, going 235/45/17's isn't a bad thing with the only down side of having the speedometer off by 2mph at 70mph.

Thanks for taking time with all my inquiry dude. I really appreciate it. I just tend to over think things before deciding on something.

I hear you about having more tire to better put the power down. Price is a consideration and going 18's mean dumping more money.

Edit:

If fundage allowed for it, I'd like to be on Ohlins, RPF1's in 17x9 +35's but that supercharger set me back a bit and I have to run wider tires for that extra power. So these XXR's are being considered just so I can mount wider tires.

Maybe when I can afford some coilovers, I'll go with wider RPF1's in 17x9 +35 and 255/40/17 (25" diameter vs. 24.6" diameter stock).

With all things considered (grip/ spring perch rub/ cost of tires/ tire wear, ride comfort/speedometer difference), I've come to the conclusion that going with XXR 527 in 17x8.25's and MPSS 235/45/17's (25.4" diameter vs. 24.6" diameter stock) will be what I'm going with.

[G-awesome]

Originally Posted by SHWNBRZ

Not planning on running from the cops. If I run from them, they're going to end up taking me to my mom (she works as a nurse for the county jail and deals with people who the 5-0 bring in).

That's another consideration for going 235/45/17....less width than 245/40/17 (less with by .4" or .2" or about 5mm gained clearance) for clearing the spring perch. Also, taller tire should help with ride comfort. IIRC, regular WRX's come with 235/45/17's as stockers and those put out 268/258 on the crank. Granted, the contact patch on the 235's all get used for putting power down....because AWD.

I am waiting on a Jackson Racing Supercharger and will be running the CARB tune so it shouldn't put an extra 10-20hp/tq that people get from having a custom tune. I'm totally fine with whatever I get with the CARB tune for the supercharger

I could also go 235/40/17....but I'll have to switch over to a Bridgestone RE11 if I go that route.

Thing is, I have another $70 card coming in from America's tire from purchasing asset of tires for the Oddysey. I'll have $140 Ito use off of rebates that I can just plop down at Americas Tires counter. So as much as possible, I would like to get something they already have....though I'm sure they can order the RE11's for me. Another thing is that I'm planning on pulling the trigger on the tires next time they have another promo... so I drop $140 in rebate card (paying for 3 tires out of my pocket and getting 4) and then getting another $70 card in the mail. I'd like to go with this for the best bang for the buck. Heck, I've already spent $1500 out of my pocket for tires already.

Now if I go with 235/40/17 RE11's, I'm going with a 24.4" diameter tires vs 24.6", I lose both on ground clearance and increase the gap between the tire/wheel and fenders. Loss is negligible really. What I gain by going with this is I gain more clearance between the spring perch and tire vs. going with the wider 245/40/17's so I wouldn't have to worry about ever rubbing.

From reading reviews, it's just that the PSS' seems like it's the way to go...given the review between the PSS 245/40/17 and the RE11 in 235/40/17....ratings from tirerack indicate that the PSS's are the better tires. Only issue I have is the risk of rubbing.

If I go with 235's, I might as well go with XXR 17x8.25's to cut down on weight some. Will I still be okay with 245/40/17's with the 17x8.25's? If I go 245's, I may have to go with 18x8.75's so the tires are better supported by the rims. Wider wheels/tires also supposedly decrease the turn in feel...but at this point, I'm thinking...how much more could you take away from going 235 to 245? I know it'll be noticeable coming from 215 to 234/245.

I could also just go with 18x8.75 and 235/40/18...and it'll work just fine. I'd have added more weight in both tires and wheels...though it will give me an option for mounting 245/40/18's later down the line.

I guess if anything, I can add spacers right? But then that increases the poke a smidge....

I'm probably overthinking things and am creating my own dilemma but I just want to do it once by doing it right.

At this point I'm leaning towards going 17x8.25 +35, 235/45/17 for the sake of spring perch clearance/better ride comfort/more ground clearance/less gap between fenders and the tires with the only trade off of the odometer being off by 2mph at 70. Next choice is the 235/40/17 for better spring perch clearance and steering feel vs. the 245/40/17.

Now, if the PSS' came in 235/40/17's....I'd have gone with that as opposed to running that size with RE11's. I'm sure the RE11's are badass tires as well, but the PSS' are my first choice.

Looks like you done the exactly same amount of intense research as me when I was scoping out rims and suspension! lol

I just installed my RCE yellows and got the same spec rims. Haven't mounted it yet but I'm planning to shove the stock tires on for the time being since I have plenty of tread left.

Planning to go with the PSS as well once the stock one wears out. Mine's also a DD so I'm planning 225/45/17s (maybe 235/45/17...undecided still) since I don't think I'll be supercharging the car any time soon. For you, 235/45/17 should be more than safe for clearance. I don't think you should worry at all about the overall weight of the wheel set up and odometer reading since you are supercharging it!

[SHWNBRZ]

Originally Posted by G-awesome

Looks like you done the exactly same amount of intense research as me when I was scoping out rims and suspension! lol

I just installed my RCE yellows and got the same spec rims. Haven't mounted it yet but I'm planning to shove the stock tires on for the time being since I have plenty of tread left.

Planning to go with the PSS as well once the stock one wears out. Mine's also a DD so I'm planning 225/45/17s (maybe 235/45/17...undecided still) since I don't think I'll be supercharging the car any time soon. For you, 235/45/17 should be more than safe for clearance. I don't think you should worry at all about the overall weight of the wheel set up and odometer reading since you are supercharging it!

That long wait for the supercharger though. LoL! I'm 20 days into the wait. I'm getting my suspension installed over the weekend...then getting an alignment in a week.

I'm not too too worried about the wheel/tire weight as much...though I'd prefer to go lighter if I can given the budget constraints.

Ended up with the RCE Yellow's, SPC front camber bolts, and SPC adjustable LCA for the rear because the supercharger happened. If the car ran out of the box like it does with headers and e85, I'd have spent the money on a set of Ohlins and nicer wheels. I have to have gold though...unfortunately, the selection for gold wheels aren't plentiful when you dont want to spend 400-800 bucks a wheel. Enter XXR 527/530...problem solved.

Per Tirerack...the weight of PSS 235/45/17's are the same as 225/45/17's. Coming off of 215's, you might be able to feel the change in steering feel if you go straight to 235's. There's that and the speedometer difference with the change of tire dimensions...lesser with the 225's than the 235's. Again, you do end up with the pro's and cons for the said tires.

You could also get better performance when cornering with proper alignment.

For what I'm using the car for, I cant justify spending another $5-6k for the tires/wheels/coilovers that I would like to have. The sub $2k I'm about to spend on the suspension bits, wheels, and tires make more sense.

Besides, dropping $12k in addition to the $27k I paid for the car adds up to $39k...another $2-4k and I might as well have just dropped the money on an STI. Still, the BRZ is not the STI. Maybe down the line...

'08 MX5 is at 36K, '12 Focus is at 64K, and '15 BRZ is at 16.8K miles.

[G-awesome]

Originally Posted by SHWNBRZ

That long wait for the supercharger though. LoL! I'm 20 days into the wait. I'm getting my suspension installed over the weekend...then getting an alignment in a week.

I'm not too too worried about the wheel/tire weight as much...though I'd prefer to go lighter if I can given the budget constraints.

Ended up with the RCE Yellow's, SPC front camber bolts, and SPC adjustable LCA for the rear because the supercharger happened. If the car ran out of the box like it does with headers and e85, I'd have spent the money on a set of Ohlins and nicer wheels. I have to have gold though...unfortunately, the selection for gold wheels aren't plentiful when you dont want to spend 400-800 bucks a wheel. Enter XXR 527/530...problem solved.

Per Tirerack...the weight of PSS 235/45/17's are the same as 225/45/17's. Coming off of 215's, you might be able to feel the change in steering feel if you go straight to 235's. There's that and the speedometer difference with the change of tire dimensions...lesser with the 225's than the 235's. Again, you do end up with the pro's and cons for the said tires.

You could also get better performance when cornering with proper alignment.

For what I'm using the car for, I cant justify spending another $5-6k for the tires/wheels/coilovers that I would like to have. The sub $2k I'm about to spend on the suspension bits, wheels, and tires make more sense.

Besides, dropping $12k in addition to the $27k I paid for the car adds up to $39k...another $2-4k and I might as well have just dropped the money on an STI. Still, the BRZ is not the STI. Maybe down the line...

'08 MX5 is at 36K, '12 Focus is at 64K, and '15 BRZ is at 16.8K miles.

I'm leaning more towards 225 for the width. The rubber compound on the PSS's has really good grip so going wider isn't critical for a DD with possible track days down the future.

I keep telling myself to call it quits (performance-wise) after I bolt my header on and tune with OFT stage 2 since I have a trd catback and perrin intake on. Although that edelbrock and/or hks v3 supercharger is mighty tempting....

[86Hiro]

Just get the 18x9.75 et20's and slap some 225/40's on them, slam it and call it a day

[SHWNBRZ]

[IMG]http://img.photobucket.com/albums/v163/sacairsoftsnoopy/Mobile%20Uploads/IMG_6868_zpsi***pgn3.jpg[/IMG]





Not quite related to the XXR 527 thread yet but it'll be relevant for someone who may be looking to have the same setup as mine.

Photos are of the clearance between Michelin PSS 225/45/17 on the stock 17x7 +48 wheels.

I have RCE Yellows, 14mm OEM crash bolt on the top, SPC adjustable camber bolt at the bottom.

I have the following alignment specs:

Front Driver Side: -1.6 camber
Front Passenger side: -1.6 camber
0 total toe up front

Rear Driver side: -1.4 camber
Rear Passenger side: -1.3 camber
1/16" total toe

I don't race around on the track though I do take on corners on the aggressive side when there's no cops/traffic. I do a lot of highway driving. On a rare occasion, I'll go on drives around the mountains/twisties.

As can be seen, clearance for the said camber/tire/suspension setting is on the closer side of things. I used a paint brush to check for clearance. The driver side clears it just fine. The passenger side, I have to finesse the paint brush handle to go through with little to no resistance. This is of course going by feel.

Digital caliper says that the said paint brush handle was about 7.75mm thick.

Found a wheel/offset clearance calculator which I just accidentally closed. Yes, I have to find it.

According to it, when moving from a 17x7 +48 wheel to a 17x8.25 +35 wheel, the rim will stick in about 3mm towards the car...the rest of the width sticks out away from the car.

Going with this, I may lose another 3mm of clearance...leaving me with 4.7mm (.185"). That's a bit close for comfort to me as I'm not very experienced with settings and what not.

I've read that 3-5mm spacers would be the widest thickness that we can use to increase clearance without using extended studs. Adding another 3mm to the 4.7mm clearance will put me at about .3"/7.7mm...

Thoughts?

Edit: If anything, it looks like it'll be the tire's side wall and the surface of the spring that are closest to each other. Will it rub at 4.7mm/ 7.7mm when cornering hard? I'm on Michelin Pilot Super Sports if that matters.

--------

2nd edit: supposedly there's going to be a 17x7.5" +40 XXR 527 coming out. Per a rim calculator, you gain 2mm of clearance with these over the 17x8.25 version. That wheel would be just about perfect with the 225/45/17 tire with a bit more camber for those looking for much better grip than stock.

I should be getting my 17x8.25 +35 XXR 527's tomorrow along with hubcentric rings and muteki sr48 lug nuts. I should also be getting my 3mm hubcentric spacers as well.

I may be getting everything done by Friday (12/4) afternoon.

On a side note, it's been 26 days after a Jackson Racing Supercharger has been ordered from FT86speedfactory. Might be time to hit them up for an update on it =^_^=

[Scikotic]

I just bought a set of XXR 530's +33 offset 8.75" and want the widest tire I can get with the stock spring perch in the back. I have an Eiback Pro Kit 1" drop on there and don't want to rub. I believe from reading here that a 255/35/18 would fit, but how about a 265? I am FI about 400hp and looking for as much grip as I can get. Any thoughts?

[swarb]

Originally Posted by Scikotic

I just bought a set of XXR 530's +33 offset 8.75" and want the widest tire I can get with the stock spring perch in the back. I have an Eiback Pro Kit 1" drop on there and don't want to rub. I believe from reading here that a 255/35/18 would fit, but how about a 265? I am FI about 400hp and looking for as much grip as I can get. Any thoughts?

Check the meaty tire thread for more info.
http://www.ft86club.com/forums/showt...light=max+tire


Look how big the stock suspension is. No way 265 will fit. Look a few posts up of the tire clearance to the strut/spring. 255 is pushing it. 255 fits with coilovers, I doubt it fits with stock struts. I would say 245 is the max on that wheelsetup.

[SHWNBRZ]

Update:

Got my alignment done and new wheels on.



Passenger Side Clearance:



Driver Side Clearance:



The tube that I have on the photos measures at 9.8mm. As you can see, it clears it without any issues.

I did try a paint pen that's at 14.5mm. No dice. So as far as clearance goes with this setting:

XXR 527 17x8.25 +35
-2.0 Camber L/R and 0 Toe up front
Michelin Pilot Super Sport 225/45/17

Expect clearance between 9.8mm to 14.5mm Unfortunately, I don't have anything else that I'm able to use to check the clearance. Maybe when OCD hits, I'll be able to find something smaller than the paint pen to help narrow what kind of clearance we could be looking at with the settings I have on.

--------------------------


For Future Reference, with my current set up...look into

ADVAN NEOVA AD08 R
http://www.tirerack.com/tires/tires....romSurvey=true

Section width is the same as Michelin Pilot Super Sports at 8.9"
The Advan AD08 has a Tread Width of 8.5" vs. the MPSS which has a tread width of 8.2" (stock Primacy HP 215/45/17's have 7.5")
*Michelin Pilot Super Sport 245/40/17 has a tread width of 8.5"
Advans are 2lbs heavier than the Michelin's (24 vs. 22)
Overall Diameter of the Advan is 24.8". Overall Diameter of the Michelin is 25". (stock Primacy HP has a diameter of 24.7")
Michelin has tread depth of 10/32 vs. Advan's 9/32

As far as the contact patch and diameter, the Yokohama Advan R looks to be comparable to the MPSS in 245/40/17...its also 1 lb. heavier. Section with for the AD08 is 8.9" vs. the MPSS' 9.8"

When my MPSS 225/45/17's need changing...I'll more than likely switch over to the Yokohama Advan AD08 R's so I get an extra .3" worth of contact patch. I am aware that the tire compound is also a HUGE factor in getting grip but I'm a bit concerned about the increased section width when switching over to the 245/40/17 MPSS with regard to losing clearance. I'm not too worried about the increased weight as I'm scheduled to go FI in a couple of weeks.