Desperately Need Help With Wheel Fitment on Stock Suspension - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

TokudanStorm · 04-12-2018, 05:46 PM

Hey guys. So I'm running into a bit of a problem with my wheel fitment. I've been really keen on getting some Rays Gram Light 57DR 18x9.5 with a +38 offset with a 245/35 tire (as said on Ft86speedfactory's video). However, I did contact someone locally that worked with 86's and they said that 9.5's wouldn't fit in the front and it might with spacers. I'm not 100% sure who to follow so I need help with this! Thanks a lot if you can!

P.S. I want to keep stock suspension.

switchlanez · 04-12-2018, 06:13 PM

9" wide +42 is probably the most extreme I've heard that fits stock suspension with appropriately sized (255) tires (see http://www.ft86club.com/forums/showthread.php?t=42746). But I woudn't be surprised if 255s that run wider than normal rub.

Inner clearance difference of that compared to stock: (9"-7")/2 * (25.4mm/1") - (48-42) = 19.4mm closer to strut than stock

Same calculation for your wheel of interest: (9.5-7)/2 *(25.4/1) - (48-38) = 21.75mm closer to strut than stock than stock

That is 2.35mm more. That's really pushing it. I've never heard of anyone running a 9.5 wheel in front with stock suspension. Unless someone can say otherwise, I wouldn't risk it. Owners generally agree that 9" +38 is safe. Thats a 15.4mm delta from stock or a 6.35mm delta from the wheels you want.

Stang70Fastback · 04-12-2018, 06:18 PM

They're going to poke a lot... that's just completely the wrong size for stock suspension.

carlovestela · 04-12-2018, 06:27 PM

Try the 17x9+38 with 245/40/17

86TOYO2k17 · 04-12-2018, 06:44 PM

Look at the specs of the tire width. More important for fitment then rim width unless your going super stretched of course. I believe I seen many people with a 17x9+42 with a 245/40r17 and no rub in the front. That is 9.7” wide tire. Same width as 245/35/18 i would not be surprised if your setup actually fit. If not I bet a 3mm spacer which is perfectly safe would make up the difference you needed. But I have personally not tested or seen this setup.

DarkSideFRS · 04-12-2018, 06:47 PM

u can fit 17x9 +38 if your camber is at -1.5 or less.

tyler_win_photo · 04-12-2018, 10:25 PM

I've seen someone run 235/40 with that wheel setup on stock suspension and it fit. 245 you might have a bit of rubbing without a 5mm spacer.

carlovestela · 04-12-2018, 11:17 PM

I think 17x9+38 with 245/40/17 will fit in front with -0.1 -0.2 camber

NoHaveMSG · 04-12-2018, 11:21 PM

Quote:

Originally Posted by carlovestela

I think 17x9+38 with 245/40/17 will fit in front with -0.1 -0.2 camber

As stated above by DarkSideFRS it will fit with -1.5. That was my setup as well before I went coilover. Any more and the tire will rub the spring perch.

ZionsWrath · 04-13-2018, 12:50 AM

I rub at full lock with 225/45/17 on 17x8+45 at full lock if i hit any uneven pavement while driving

carlovestela · 04-13-2018, 05:17 PM

How come?

Quote:

Originally Posted by ZionsWrath

I rub at full lock with 225/45/17 on 17x8+45 at full lock if i hit any uneven pavement while driving

BAD ROD · 04-13-2018, 05:35 PM

I've been running 18x9.5 +38, 245/35/18 for a couple of years and 10's+ thousands miles on stock suspension. No rubbing what-so-ever. The front does poke a bit.

I just went to 265's on the rear and am getting ready to move to 8.5's in the front with lowering springs.

ZionsWrath · 04-14-2018, 03:47 AM

Quote:

Originally Posted by carlovestela

How come?

Only thing i can come up with is track driving puts a lot more forces than street. I was on -2.5 or 3 camber but i dont rub the strut so not sure if thats what cause it. 225/45/17 is also very slightly larger diameter than stock. If you are an aggressive driver i dont know about 9.5. plus you wont be able to have as much camber so you cant utilize all the tire.

I had 18x8.5 +45 in front in the past and didnt rub but i didnt have any seat time back then either. Havent run them since i got these 17x8

I guess it all depends on your priorities

04-12-2018, 05:46 PM	#1
TokudanStorm Junior Member Join Date: Oct 2017 Drives: White '17 86 Location: Irvine Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Desperately Need Help With Wheel Fitment on Stock Suspension Hey guys. So I'm running into a bit of a problem with my wheel fitment. I've been really keen on getting some Rays Gram Light 57DR 18x9.5 with a +38 offset with a 245/35 tire (as said on Ft86speedfactory's video). However, I did contact someone locally that worked with 86's and they said that 9.5's wouldn't fit in the front and it might with spacers. I'm not 100% sure who to follow so I need help with this! Thanks a lot if you can! P.S. I want to keep stock suspension.

04-12-2018, 06:13 PM	#2
switchlanez Glorious BRZ Master Race Join Date: Apr 2011 Drives: Subaru Libird Location: Race Wars Posts: 3,645 Thanks: 1,050 Thanked 2,718 Times in 1,079 Posts Mentioned: 110 Post(s) Tagged: 0 Thread(s)	9" wide +42 is probably the most extreme I've heard that fits stock suspension with appropriately sized (255) tires (see http://www.ft86club.com/forums/showthread.php?t=42746). But I woudn't be surprised if 255s that run wider than normal rub. Inner clearance difference of that compared to stock: (9"-7")/2 * (25.4mm/1") - (48-42) = 19.4mm closer to strut than stock Same calculation for your wheel of interest: (9.5-7)/2 (25.4/1) - (48-38) = 21.75mm closer to strut than stock than stock That is 2.35mm more. That's really pushing it. I've never heard of anyone running a 9.5 wheel in front with stock suspension. Unless someone can say otherwise, I wouldn't risk it. Owners generally agree that 9" +38 is safe. Thats a 15.4mm delta from stock or a 6.35mm delta from the wheels you want. __________________ << BUILD THREAD >> Last edited by switchlanez; 04-13-2018 at 12:03 AM.*

04-12-2018, 06:18 PM	#3
Stang70Fastback A.K.A. Starlord Join Date: Oct 2013 Drives: 2015 Series.Blue Location: Illinois Posts: 1,842 Thanks: 845 Thanked 2,099 Times in 834 Posts Mentioned: 30 Post(s) Tagged: 3 Thread(s)	They're going to poke a lot... that's just completely the wrong size for stock suspension. __________________ . Check out my blog, read all about my BRZ adventures, and oogle my sweet cell-phone photos! You can also find me on Instagram, and on Facebook.

04-12-2018, 10:25 PM	#7
tyler_win_photo Senior Member Join Date: Dec 2013 Drives: 2014 Scion FRS (Asphalt) Location: Redmond, WA Posts: 554 Thanks: 36 Thanked 171 Times in 141 Posts Mentioned: 6 Post(s) Tagged: 2 Thread(s)	I've seen someone run 235/40 with that wheel setup on stock suspension and it fit. 245 you might have a bit of rubbing without a 5mm spacer. __________________ AVO Stage 2 Turbo Build Thread https://wheelwell.com/tyler-nguyen-1...014-scion-fr-s

04-13-2018, 12:50 AM	#10
ZionsWrath Thanks Join Date: Apr 2013 Drives: BRZ Location: NY Posts: 4,163 Thanks: 5,989 Thanked 3,100 Times in 1,498 Posts Mentioned: 38 Post(s) Tagged: 3 Thread(s)	I rub at full lock with 225/45/17 on 17x8+45 at full lock if i hit any uneven pavement while driving __________________

04-12-2018, 06:27 PM	#4
carlovestela Senior Member Join Date: Nov 2015 Drives: 2015 Firestorm FRS Location: SF Bay Area Posts: 219 Thanks: 2 Thanked 7 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Try the 17x9+38 with 245/40/17

04-12-2018, 06:44 PM	#5
86TOYO2k17 Senior Member Join Date: Jan 2018 Drives: 2017 toyota 86 Location: PNW Posts: 2,131 Thanks: 336 Thanked 1,188 Times in 781 Posts Mentioned: 16 Post(s) Tagged: 0 Thread(s)	Look at the specs of the tire width. More important for fitment then rim width unless your going super stretched of course. I believe I seen many people with a 17x9+42 with a 245/40r17 and no rub in the front. That is 9.7” wide tire. Same width as 245/35/18 i would not be surprised if your setup actually fit. If not I bet a 3mm spacer which is perfectly safe would make up the difference you needed. But I have personally not tested or seen this setup.

04-12-2018, 06:47 PM	#6
DarkSideFRS Banned Join Date: Apr 2017 Drives: 2013 pearl white FR-S Location: Socal Posts: 536 Thanks: 39 Thanked 191 Times in 124 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	u can fit 17x9 +38 if your camber is at -1.5 or less.

04-12-2018, 11:17 PM	#8
carlovestela Senior Member Join Date: Nov 2015 Drives: 2015 Firestorm FRS Location: SF Bay Area Posts: 219 Thanks: 2 Thanked 7 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I think 17x9+38 with 245/40/17 will fit in front with -0.1 -0.2 camber

04-13-2018, 05:35 PM	#12
BAD ROD Member Join Date: Jan 2015 Drives: 2014 BRZ Location: El Dorado Hills (Northern CA) Posts: 45 Thanks: 14 Thanked 19 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I've been running 18x9.5 +38, 245/35/18 for a couple of years and 10's+ thousands miles on stock suspension. No rubbing what-so-ever. The front does poke a bit. I just went to 265's on the rear and am getting ready to move to 8.5's in the front with lowering springs. Attached Images Last edited by BAD ROD; 04-13-2018 at 05:51 PM.

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