Tire size for 17x8.5 +32 +42 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

giraffee · 08-06-2013, 05:27 AM

Haven't seen anyone do this yet so here goes.
I'm running same size wheels with different offsets front and rear as I want a flush look without spacers, and don't care too much about the hassle of tire rotating.
Will be dropped 1-1.5"

Can someone please recommend a tire size to keep rolling diameter similar to stock and won't rub?
Maybe 235/40? :s

Many thanks in anticipation

GTB/ZR-1 · 08-06-2013, 07:34 AM

I think you hit the nail on the head w/ 235/40s or probably even 45s, that will work w/o issue (small speedo errors). Not exactly the same diameter as stock, but close enough.

ENJOY!

SurfAndSand · 08-06-2013, 03:27 PM

I'm curious. What wheels did you manage to find that are 17x8.5 with those offsets? Sounds ideal to me...

diss7 · 08-06-2013, 08:17 PM

Depends what are trying to do.

205/40 or 215/40 will be lighter, and effectively shorten your gearing for cheap.

They also lower the COG of the entire car.

And they can be as grippy as you like. Easy to get semis in that size.

So many positives. (Guess what size I run)

The negative is, they increase the wheel arch gap, so you will get hate from hellaflush/stance/hardparkers. I care about that about as much as I care about women's soccer.

08-06-2013, 05:27 AM	#1
giraffee Senior Member Join Date: Jun 2012 Drives: Slowly Location: Sydney, Australia Posts: 207 Thanks: 88 Thanked 58 Times in 31 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Tire size for 17x8.5 +32 +42 Haven't seen anyone do this yet so here goes. I'm running same size wheels with different offsets front and rear as I want a flush look without spacers, and don't care too much about the hassle of tire rotating. Will be dropped 1-1.5" Can someone please recommend a tire size to keep rolling diameter similar to stock and won't rub? Maybe 235/40? :s Many thanks in anticipation

08-06-2013, 07:34 AM	#2
GTB/ZR-1 Senior Member Join Date: Oct 2012 Drives: '13 BRZ in WRB--let's mod!!! Location: Central, FL Posts: 1,224 Thanks: 317 Thanked 449 Times in 262 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I think you hit the nail on the head w/ 235/40s or probably even 45s, that will work w/o issue (small speedo errors). Not exactly the same diameter as stock, but close enough. ENJOY! __________________ * ‘23 Corolla GR—AutoX/DE toy * '13 Toyobaru P&L Turbo WRB BRZ SCCA XS-A build starting. SOLD * '22 Z51 Vette--sold. * '09 Nissan GT-R--gone, but not forgotten... 10.63 @ 131+ on streeties. * '90 ZR-1 11.0 @ 130.2 & 11.2 @ 132.4 sprayed 120 shot.

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08-06-2013, 08:17 PM	#4
diss7 Banned Join Date: Sep 2012 Drives: AE86, 2x GT86, TE27 Location: Christchurch NZ Posts: 1,478 Thanks: 826 Thanked 1,179 Times in 522 Posts Mentioned: 33 Post(s) Tagged: 0 Thread(s)	Depends what are trying to do. 205/40 or 215/40 will be lighter, and effectively shorten your gearing for cheap. They also lower the COG of the entire car. And they can be as grippy as you like. Easy to get semis in that size. So many positives. (Guess what size I run) The negative is, they increase the wheel arch gap, so you will get hate from hellaflush/stance/hardparkers. I care about that about as much as I care about women's soccer.

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