OFFICIAL: Enkei RPF1 Wheel Thread

[DocWalt]

There's not much metal there to roll, as an FYI. With camber the 255s should fit fine, my MEATY 245/40-17s (RE-71Rs, being "competition" oriented they run wide) fit perfectly fine with no rubbing. I'm at -2.6/-2.0 front/rear camber, about an inch lower than stock. You need camber or you'll poke anyway.

[PandaSPUR]

Originally Posted by DocWalt

There's not much metal there to roll, as an FYI. With camber the 255s should fit fine, my MEATY 245/40-17s (RE-71Rs, being "competition" oriented they run wide) fit perfectly fine with no rubbing. I'm at -2.6/-2.0 front/rear camber, about an inch lower than stock. You need camber or you'll poke anyway.

Dumb question, is that much camber possible with just coilovers (Tein Monosport for me) or do I need additional parts?

EDIT: I understand that lowering my car gives me some natural camber and that my fronts are adjustable to some degree (cant find info online that tells me exactly by how much...). Just trying to figure out if I need to get LCAs for the rear, because that's an expense I'd like to avoid.

EDIT2: Read the alignment sticky and so the rears can have up to -2.0 camber stock, so I'll be fine there. Now I just need to figure out how much camber my Monosports can provide up front.

[DocWalt]

Originally Posted by PandaSPUR

Dumb question, is that much camber possible with just coilovers (Tein Monosport for me) or do I need additional parts?

EDIT: I understand that lowering my car gives me some natural camber and that my fronts are adjustable to some degree (cant find info online that tells me exactly by how much...). Just trying to figure out if I need to get LCAs for the rear, because that's an expense I'd like to avoid.

EDIT2: Read the alignment sticky and so the rears can have up to -2.0 camber stock, so I'll be fine there. Now I just need to figure out how much camber my Monosports can provide up front.

I can't speak for the Monosports, but at my height I was at about -1.7 up front without touching my camber plates. I did my rear LCAs at the same time as the coilovers so I don't know what I'd be at with stock LCAs. With stock LCAs before I touched anything, I was at -1.0 and -1.7... Which is pretty awful having that much side to side difference.

[GTHachiRoku]

Originally Posted by PandaSPUR

EDIT2: Read the alignment sticky and so the rears can have up to -2.0 camber stock, so I'll be fine there. Now I just need to figure out how much camber my Monosports can provide up front.

How low it is and weight you put in the car will affect it,
but you can easily get 2.5 in the front with the MonoSports.

I'm currently at 3.0 front and 2.5 rear on MonoSports and SPC v2 LCAs.

[PandaSPUR]

Originally Posted by DocWalt

I can't speak for the Monosports, but at my height I was at about -1.7 up front without touching my camber plates. I did my rear LCAs at the same time as the coilovers so I don't know what I'd be at with stock LCAs. With stock LCAs before I touched anything, I was at -1.0 and -1.7... Which is pretty awful having that much side to side difference.

Originally Posted by GTHachiRoku

How low it is and weight you put in the car will affect it,
but you can easily get 2.5 in the front with the MonoSports.

I'm currently at 3.0 front and 2.5 rear on MonoSports and SPC v2 LCAs.

Alright so it sounds like I should probably be fine, but I'll need to double check with some additional research.

Also sounds like I dont need to roll my fenders, I'll confirm this with the shop that I'm using for suspension install and alignment.

Now the question is back to 17 or 18" and 245 or 255 tires.. hm.

[tyler_win_photo]

Originally Posted by PandaSPUR

Dumb question, is that much camber possible with just coilovers (Tein Monosport for me) or do I need additional parts?

EDIT: I understand that lowering my car gives me some natural camber and that my fronts are adjustable to some degree (cant find info online that tells me exactly by how much...). Just trying to figure out if I need to get LCAs for the rear, because that's an expense I'd like to avoid.

EDIT2: Read the alignment sticky and so the rears can have up to -2.0 camber stock, so I'll be fine there. Now I just need to figure out how much camber my Monosports can provide up front.

Yes the rears can have up to -2.0 camber stock, but what you should be worried about is the difference between left and right. From the factory many of our cars have around -.5 camber difference between left and right in the rear.

[DocWalt]

Originally Posted by tyler_win_photo

Yes the rears can have up to -2.0 camber stock, but what you should be worried about is the difference between left and right. From the factory many of our cars have around -.5 camber difference between left and right in the rear.

Bingo. Supposedly the newer cars are built with a bit better tolerances so the camber difference is lessened, but is it really worth finding out when you can buy SPC LCAs for ~$220? My car had 0.7 degrees of camber difference from the factory, that's just pathetic. Subaru/Toyota screwed up by not giving an adjustment to compensate for their cheap build quality, but that's a topic for another thread

[PandaSPUR]

Originally Posted by tyler_win_photo

Yes the rears can have up to -2.0 camber stock, but what you should be worried about is the difference between left and right. From the factory many of our cars have around -.5 camber difference between left and right in the rear.

Originally Posted by DocWalt

Bingo. Supposedly the newer cars are built with a bit better tolerances so the camber difference is lessened, but is it really worth finding out when you can buy SPC LCAs for ~$220? My car had 0.7 degrees of camber difference from the factory, that's just pathetic. Subaru/Toyota screwed up by not giving an adjustment to compensate for their cheap build quality, but that's a topic for another thread

So you're saying I should get LCAs eventually anyway even if I dont require aggressive camber, because stock can vary so much?

Also, I haven't done research yet but I always thought cheaping out on suspension parts was a bad idea, so I kinda ignored anything under $500 which seemed like the average.

Sigh. I really want at least a 255/40 tire. Still unsure if this is safe to do without LCAs and fender rolling. Also unsure if I can do it on 18" or 17".

[DocWalt]

I'm using the cheap SPC V2 control arms for autocross, track use, and daily driving. Plenty of other track guys are using them too because they're cheap and they hold up well. No concerns there, IMO.

If you're going to 18" you can't fit a 255/40, it'll be way too tall. You'd have to drop to a 255/35. That narrows your choices a little See what I mean here: http://www.willtheyfit.com/index.php...culate#content

I'd play around with the fitment choices on the willtheyfit site, it's helpful for visualizing the changes. Ignore the strut picture shown, it's not for a BRZ/FR-S.

[PandaSPUR]

Originally Posted by DocWalt

I'm using the cheap SPC V2 control arms for autocross, track use, and daily driving. Plenty of other track guys are using them too because they're cheap and they hold up well. No concerns there, IMO.

If you're going to 18" you can't fit a 255/40, it'll be way too tall. You'd have to drop to a 255/35. That narrows your choices a little See what I mean here: http://www.willtheyfit.com/index.php...culate#content

I'd play around with the fitment choices on the willtheyfit site, it's helpful for visualizing the changes. Ignore the strut picture shown, it's not for a BRZ/FR-S.

So after looking through all the RPF1 threads and listening to you guys..

With just coilovers, the following is the biggest I can fit:
- 18x9.5 +38 with 255/35
- 17x9 +35 with 255/40

LCAs are recommended, but mainly to correct for factory misalignment rather than to provide aggressive camber to fit the wheels.

Now I'm wondering again, what if I rolled the fenders? Would that be enough to shove a 255/40/18 in there?

If not, my decision is down to whether I'd want more tire or more wheel.

[DocWalt]

Again, there's not a whole lot of metal to roll. If you went to the taller tire, I'd be more worried about meeting something hard in the fender well and not the fender itself. Keep in mind that the taller tire will screw up the speedo reading too.

Maybe other people have pulled that tire size off, but I've not seen it posted anywhere.

[PandaSPUR]

Originally Posted by DocWalt

Again, there's not a whole lot of metal to roll. If you went to the taller tire, I'd be more worried about meeting something hard in the fender well and not the fender itself. Keep in mind that the taller tire will screw up the speedo reading too.

Maybe other people have pulled that tire size off, but I've not seen it posted anywhere.

Eh true. So I'll stick to the 255/40/17 or 255/35/18 and save myself the cost of fender rolling.

I'll consult with my shop to see what they think about getting LCAs.

[AllOutApex]

Does anyone have 19" rpf1's? Want to pick some up but keen to see how they look first.
The ones i want to buy in particular are 19x8 +48

[strat61caster]

Originally Posted by DocWalt

Again, there's not a whole lot of metal to roll. If you went to the taller tire, I'd be more worried about meeting something hard in the fender well and not the fender itself. Keep in mind that the taller tire will screw up the speedo reading too.

Maybe other people have pulled that tire size off, but I've not seen it posted anywhere.

Last I checked my clearance I can bottom out my Bilstein rear dampers with 17x9 245 tires and nothing else hits or rubs, I wouldn't worry about putting 255s on my car personally.

Maybe I missed something and he wants to go super low and maintain travel, then the suspension or tire might hit/rub.