Will this fit? (width, offset and tire size Qs)

[Killerbee]

Originally Posted by Webwerk

Alright guys I'm admittedly super new to all of this so feel free to flame if you must!

I'm really interested in 18x8.5 5x100 offset +48 (rear) WedSports SA-15R's for the rear. I'd like to wrap them in Hankook Ventus RS-3 275/35ZR18. I'm about 99% certain this will fit after research.

(Wheel)
(Tire)

I'd like to do smaller width wheels (Maybe 18x7.5?) in the front with the same tire only in a size that fits. (Is 215/45ZR17 the right size for that?)

I also currently am still riding on the 100% stock suspension but will be moving to something adjustable here probably late summer (Can't afford to do all of this at once unfortunately) and I'd like to do a 1" drop.

I don't want to slam anything or even completely eliminate the wheel gap, I just want meaty wheels with no rub and ultimately a better ride.

If anyone could help me figure out if this would fit first with the stock suspension setup and/or let me know if I need to wait until I can buy something more adjustable to make it all work.

First of all, welcome to the wheel and tires world :-)

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Long answer:
Now one thing that does not go well togeter is 215 front and 275 rear. It will look shit (okey, thats just my opinion) if you dont have a Ferrari 512TR or something shape on your car, where basically the rear is way wider than the front) It will also handle horrible shitty.

Next to the tire sizes itself. A 275/35/18 will be 4% off, whats really bad, this means the tire flank will be 1.25cm higher than stock. With a 275 wide this will look like a offroad/dragster car. Not to mention that your speedo will be off. If you have to go for a 275, at least take a 275/30/18, that will only be 0.5% off. Also, fitting a 275 tire on a 8.5" will be near impossible, but it will for sure NOT be safe. 275 tires should go at least on a 9.5" wheel.

Now a 215/45/17 will not fit a 18" rim, as those are 17" tires (the last digit tells you that) So you would need a 215/40/18, thats 0.6% and okey.

About fitting that 275 wheel in the rear with that wheel - I have no clue, as I never would try something like that so I have no experience with those dimensions.

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Short answer:
Your Setup is totally crap if you really want to drive this. For show or Drag racing or whatever, it may work, dont know, not my kind of stuff. But if you actually want a good ride this setup is just crap.

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Some Ideas:
If you just want flush fittment and some wider tires, go for a 8.5" (or 9") +35 wheel and either 225/40/18 or 245/35/18 (if 18" wheel) all around. 225 will look a bit streched, but is cheaper, 245 will sit flushish on the wheel

If you just need for whatever reason to go staggered, 8.5 +35 front with a 225/40/18, and 9.5 +35ish with a 245/35/18 will work, however the tires will be just a little bit streched. Keep in mind that Staggered Setups always bring some understeer to the car. Also be aware that you may want to lower the car as it will look offroad style on the stock suspension, even more than now on stock wheels. Also you may work with camber etc but I'm not going into that topic here as otherwise I will write a book.

[RavSpec]

^^^ pretty much correct. Just want to add, do ur suspension first before wheels.

[fubarian]

Originally Posted by Killerbee

make that 245/35/18 (245/45 sets your speedo way off)and it will be near flush/poking a bit (some mm) in the front.
However be prepared that you car will have an "offroadish" look with the new setup, so you may want to consider at least an 1" drop with springs.

OK, thanks. What about 17x8 +35. 245/35 as well? I really don't want to lower the car. I just need more contact patch than the stock wheels/tires provide as I'm going FI.

[Killerbee]

Originally Posted by fubarian

OK, thanks. What about 17x8 +35. 245/35 as well? I really don't want to lower the car. I just need more contact patch than the stock wheels/tires provide as I'm going FI.

No, you have to adjust the tire sizes.

Short (just the answer to your question):
245/40/17 would be the tires to go for a 17x8 wheel. That is by the way an excellent choice of wheels if you do that setup as a square setup on the car.

Long (If you're interessted how things work):
245 = 245mm wide tire / 40 = 40% tirewall size the wide (in this case 40% of 245mm, so 98mm) / 17 = tire is for 17" wheels.

If you go from 17" to 18", you also have to reduce the tirewall size to compensate for that. 1" is 25.4mm. If you still leave the tire at 40% of 245, your tireflank would be 98mm+25.4mm = 123.5mm, so way to big. Now if you reduce your tireflank to 35%, you will have 85.7mm (thats 35% of 245) +25.4 = 101.1mm, which is almost like 98mm, so the tire has about the same Diameter as before with 17"

Thats why it is either 245/40/17 for 17" wheels or 245/35/18 for 18" wheels.

Rule of thumb is take 5 off the tire flank for every 20 you put in wide. Take 5 off the tire flank for every " you go up on wheel size. But again, thats just a rule of thumb. Always recheck with a tire calculator or ask someone that knows what he's doing :-)

[TylerLinders48]

Will the Enkei Tuning Raijin 18x8.5 +45 squared with Michelin PSS 245/35-18 fit on my FRS. I have Eibach Sportline springs which claim a 1.4 inch drop.

Thanks

[RavSpec]

Yes fit

[TylerLinders48]

Originally Posted by RavSpec

Yes fit

I didn't put the tire size, but I just edited it. Will it fit with MPSS 245/35-18

[fubarian]

Originally Posted by Killerbee

No, you have to adjust the tire sizes.

Short (just the answer to your question):
245/40/17 would be the tires to go for a 17x8 wheel. That is by the way an excellent choice of wheels if you do that setup as a square setup on the car.

Thanks again. Going with a set of these.

[kkkirbyyy]

Here's an update. I am now dropped on my KW V3's with the 57 extremes 18x9.5 +40. tire set up is 245/40's all around. I am running -2.91 camber on the rear and -1.6 in the front. I would say I have a nice 2 inch drop with little to no gap (pinkie hardly fits). no rubbing at all, but you cannot go any lower unless you get top hats to get more camber in the front, other wise you will rub on turns as I did when we tried..

[Webwerk]

Originally Posted by Killerbee

First of all, welcome to the wheel and tires world :-)

Short answer:
Your Setup is totally crap if you really want to drive this. For show or Drag racing or whatever, it may work, dont know, not my kind of stuff. But if you actually want a good ride this setup is just crap.

Killerbee--thank you so much for your detailed response! I'd honestly rather not go staggered, I just assumed when you got too meaty between big wheels and big tires it would degrade handling performance but it seems like the opposite. It makes sense though that more surface area in the front means more contact with the road.

Brass tax what I want are straight-spoke gunmetal wheels, preferably 18 inches, with some meaty tires. I'm not concerned about them being lightweight and I'd rather spend like $2500 or under for the wheels/tires.

I think I'll go with your suggestion and do an 18 x 8.5 +35 gunmetal WedSport SA-15R wrapped in 245/35/18 wheels. Thanks again!

Originally Posted by RavSpec

^^^ pretty much correct. Just want to add, do ur suspension first before wheels.

RavSpec, The more I've been learning about this the more I realize that's the thing to do--thanks for the heads up.

Now if you all will excuse me, I'm going to go rob a bank to afford all this shit I must have.

[Killerbee]

Originally Posted by Webwerk

I think I'll go with your suggestion and do an 18 x 8.5 +35 gunmetal WedSport SA-15R wrapped in 245/35/18 wheels. Thanks again!

that sounds like a really nice setup, looking forward to see some pictures on it

[cncnjn]

Would 18x9.5 5x100 38mm offset fit? My car is also lowered about 1 inch all around on coilovers.

[rayrush]

Hi, i am interested in gramlights 57 extreme in 18 x 8.5. They come in different offsets. My question is does the offset effect the concave? is so which one has the most concave in the 18 x 8.5? Thanks for any help. I am confused looking at the charts

[tinma]

Im about to pull the trigger on Enkei RS05RR rims but i wanted to make sure first that this setup will be fine with stock suspension/height.

18x8.5 rims
tire size: P225/40ZR18

Is this setup free from rubbing? any suggestions are greatly appreciated!