255/40/17 set up - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

BRZ NA · 12-01-2013, 03:31 PM

Have you guys ever ran 255/40/17 with stock suspension and specs on the track?any fitment problems with it?thx

zeppy · 12-01-2013, 04:21 PM

I think we'll need more info to answer this. what with wheel and offset? I ran a 17x19 et38 with 255's and no issues on track.

BRZ NA · 12-01-2013, 05:05 PM

Like 17x9 35offset rpf1. I m concerned issues about running with stock suspension. So...

SubiePig · 12-01-2013, 06:53 PM

I run a 17x9 +35 with 255/40/17's I have no fitment issues but I am not sure if the same could be said for a car on stock suspension.

fatoni · 12-01-2013, 09:35 PM

thats an awful lot of tire for a stock car.

BRZ NA · 12-02-2013, 09:54 AM

Anyone else?thx

CSG Mike · 12-02-2013, 10:03 AM

It depends on the tire you run. Not all 255/40/17 are made equal. Wider tires like the Z2 and RS3 will rub.

BRZ NA · 12-02-2013, 02:00 PM

Quote:

Originally Posted by CSG Mike

It depends on the tire you run. Not all 255/40/17 are made equal. Wider tires like the Z2 and RS3 will rub.

Damn really? those r my top selections

kster1 · 12-02-2013, 11:33 PM

OP, slightly off topic but you should check out the December issue of Grassroots Motorsports. They talk about the relationship of rim width and tire width in their lap time results. The conclusion was that:

"The optimal rim size for a tire is equal to, or slightly larger than, the tread width."

According to their testing, a 255 tire is not ideal for a 9" rim.

mtsui · 12-03-2013, 03:11 AM

I'm running 255 RS3 in a 17x9+42 for track, the front can't clear with the offset so had to add 5mm spacer. the tires will rub the front sway bar when its full lock, other than that it's all good!
btw, I'm with stock suspension as well... and you ride height will look stupidly high, haha

BRZ NA · 12-03-2013, 11:25 PM

Thx for the input

balance · 12-04-2013, 10:15 AM

Quote:

Originally Posted by fatoni

thats an awful lot of tire for a stock car.

Curious about this.. Because I used to run the same setup (255/40/17 on 17x9) on my old track car that made roughly twice the horsepower of the twins.

fatoni · 12-04-2013, 01:36 PM

Quote:

Originally Posted by balance

Curious about this.. Because I used to run the same setup (255/40/17 on 17x9) on my old track car that made roughly twice the horsepower of the twins.

well with the extra power it was probably easier for you to heat up that much tire. its looking like the stock powered frs is not able to heat up much more than a 225.

CSG Mike · 12-04-2013, 01:52 PM

Quote:

Originally Posted by fatoni

well with the extra power it was probably easier for you to heat up that much tire. its looking like the stock powered frs is not able to heat up much more than a 225.

Oh it can heat up a 255. It's just a matter of what your goals are. 225 generally yields faster lap times, but it's not always the case.

12-01-2013, 03:31 PM	#1
BRZ NA Senior Member Join Date: Aug 2012 Drives: WR blue Location: Nor Cal Posts: 302 Thanks: 39 Thanked 12 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	255/40/17 set up Have you guys ever ran 255/40/17 with stock suspension and specs on the track?any fitment problems with it?thx

12-01-2013, 06:53 PM	#4
SubiePig Senior Member Join Date: Apr 2013 Drives: -'02 PSM WRX, '94 Miata, '13 BRZ Location: Lafayette, Louisiana Posts: 438 Thanks: 188 Thanked 155 Times in 112 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	I run a 17x9 +35 with 255/40/17's I have no fitment issues but I am not sure if the same could be said for a car on stock suspension. __________________ Sponsered by:Chasebays/Corr Performance Tuning/KartBoy/Bad Panda Motorsports/Racer-X Fabrication STX Build thread 14th/67 SCCA Nationals (2014)

12-01-2013, 05:05 PM	#3
BRZ NA Senior Member Join Date: Aug 2012 Drives: WR blue Location: Nor Cal Posts: 302 Thanks: 39 Thanked 12 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Like 17x9 35offset rpf1. I m concerned issues about running with stock suspension. So...

12-01-2013, 09:35 PM	#5
fatoni Senior Member Join Date: Apr 2011 Drives: miata, mazdaspeed protege, ls430 Location: socal Posts: 4,416 Thanks: 599 Thanked 1,442 Times in 787 Posts Mentioned: 28 Post(s) Tagged: 0 Thread(s)	thats an awful lot of tire for a stock car.

12-02-2013, 09:54 AM	#6
BRZ NA Senior Member Join Date: Aug 2012 Drives: WR blue Location: Nor Cal Posts: 302 Thanks: 39 Thanked 12 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Anyone else?thx

12-02-2013, 10:03 AM	#7
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,531 Thanks: 8,920 Thanked 14,177 Times in 6,835 Posts Mentioned: 966 Post(s) Tagged: 14 Thread(s)	It depends on the tire you run. Not all 255/40/17 are made equal. Wider tires like the Z2 and RS3 will rub.

12-02-2013, 11:33 PM	#9
kster1 Senior Member Join Date: Dec 2012 Drives: 2013 BRZ Location: Fremont, CA Posts: 316 Thanks: 229 Thanked 212 Times in 121 Posts Mentioned: 16 Post(s) Tagged: 1 Thread(s)	OP, slightly off topic but you should check out the December issue of Grassroots Motorsports. They talk about the relationship of rim width and tire width in their lap time results. The conclusion was that: "The optimal rim size for a tire is equal to, or slightly larger than, the tread width." According to their testing, a 255 tire is not ideal for a 9" rim.

12-03-2013, 03:11 AM	#10
mtsui Senior Member Join Date: Feb 2013 Drives: 135i Location: walnut Posts: 304 Thanks: 22 Thanked 30 Times in 26 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	I'm running 255 RS3 in a 17x9+42 for track, the front can't clear with the offset so had to add 5mm spacer. the tires will rub the front sway bar when its full lock, other than that it's all good! btw, I'm with stock suspension as well... and you ride height will look stupidly high, haha

12-03-2013, 11:25 PM	#11
BRZ NA Senior Member Join Date: Aug 2012 Drives: WR blue Location: Nor Cal Posts: 302 Thanks: 39 Thanked 12 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Thx for the input

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