What tire pressures do you guys run? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Stewie · 03-19-2015, 11:34 PM

What tire pressures (cold) are you guys running? I'm on stock wheels/tires and it feels like I'm understeering on 360* highway exits/entrances if I'm pushing it a little. I usually give it a bit more gas and angle to compensate and help the car rotate...but if I have to slow for other traffic, lifting results in a manageable bit of oversteer. I'm trying to get it a bit more neutral. {BRZ Limited}

Ps - i did search for this, but most of the results were in the autocross/hpde section and were old threads. This question relates more to daily driving as I have yet to autox/hpde the car. Thanks in advance.

Burrcold · 03-19-2015, 11:41 PM

DD - 35 psi

Stewie · 03-19-2015, 11:51 PM

Does it feel like the car pushes a bit more than you would like or are you happy with the feel?

Burrcold · 03-19-2015, 11:56 PM

I'm happy with the feel but I also upgraded to MPSS's and that has helped (on stock rims). Could be just the nature of the OEM wheels that is messing with you.

Stewie · 03-20-2015, 12:03 AM

Quote:

Originally Posted by Burrcold

I'm happy with the feel but I also upgraded to MPSS's and that has helped (on stock rims). Could be just the nature of the OEM wheels that is messing with you.

Yeah that's a possibility.

Did you stick with the stock tire size or did you go 225?

navanodd · 03-20-2015, 12:06 AM

I also run 35 psi. The nature of the BRZ suspension setup and front/rear balance is that at speed it will push a little bit, but is neutral enough that you should be able to control that easily enough with the throttle. The FRS (at least the 2013-14) was setup a little more tail happy, but unless you're on the throttle or inducing lift oversteer, the car will still push. When there is more weight over the front wheels, they need to do more work than the rears when turning.

Burrcold · 03-20-2015, 12:06 AM

Quote:

Originally Posted by Stewie

Yeah that's a possibility.

Did you stick with the stock tire size or did you go 225?

215. I found that they run a bit wider compared to stock.

N1rve · 03-20-2015, 12:50 AM

I'm running 36 PSI Cold..which equates to about 39-40 PSI Hot.

If I'm pushing the car through a corner, I can feel the car yaw and slide.

Stewie · 03-20-2015, 12:54 AM

Quote:

Originally Posted by N1rve

I'm running 36 PSI Cold..which equates to about 39-40 PSI Hot.

If I'm pushing the car through a corner, I can feel the car yaw and slide.

Square?

N1rve · 03-20-2015, 01:01 AM

Quote:

Originally Posted by Stewie

Square?

Yup. All around.

ntron1 · 03-20-2015, 07:35 AM

Yup, 36 cold on stock rubber and suspension.

BRZZZZZZZZZZ · 03-20-2015, 09:28 AM

I run -3 degrees of camber and 255s and I usually run about 32psi cold for daily driving and when I am at auto x closer to 27-28psi hot usually.

dp1 · 03-20-2015, 11:22 AM

Quote:

Originally Posted by BRZZZZZZZZZZ

I run -3 degrees of camber and 255s and I usually run about 32psi cold for daily driving and when I am at auto x closer to 27-28psi hot usually.

27-28psi hot or 37-38psi hot?

BRZZZZZZZZZZ · 03-20-2015, 11:55 AM

Quote:

Originally Posted by dp1

27-28psi hot or 37-38psi hot?

27-28psi. Tires still don't roll over or make maximum contact. Always stuck filling them up again at the end of the day with a hand pump.

03-19-2015, 11:34 PM	#1
Stewie Senior Member Join Date: Mar 2014 Drives: '15 - WRB Brz Limited Location: South Florida Posts: 108 Thanks: 130 Thanked 22 Times in 20 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	What tire pressures do you guys run? What tire pressures (cold) are you guys running? I'm on stock wheels/tires and it feels like I'm understeering on 360* highway exits/entrances if I'm pushing it a little. I usually give it a bit more gas and angle to compensate and help the car rotate...but if I have to slow for other traffic, lifting results in a manageable bit of oversteer. I'm trying to get it a bit more neutral. {BRZ Limited} Ps - i did search for this, but most of the results were in the autocross/hpde section and were old threads. This question relates more to daily driving as I have yet to autox/hpde the car. Thanks in advance. __________________ 2015 WRB Brz Limited 6MT 2001 BMW 540i 6MT M-Sport (sold) 2001 BMW 325ci 5MT (sold) 1988 Volvo 740 Turbo 4MT w/ electric OD/5th gear (sold)

03-19-2015, 11:41 PM	#2
Burrcold Senior Member Join Date: Jul 2010 Drives: Subaru BRZ Limited Location: Toronto, Canada Posts: 2,624 Thanks: 763 Thanked 1,586 Times in 776 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	DD - 35 psi __________________

03-19-2015, 11:51 PM	#3
Stewie Senior Member Join Date: Mar 2014 Drives: '15 - WRB Brz Limited Location: South Florida Posts: 108 Thanks: 130 Thanked 22 Times in 20 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Does it feel like the car pushes a bit more than you would like or are you happy with the feel? __________________ 2015 WRB Brz Limited 6MT 2001 BMW 540i 6MT M-Sport (sold) 2001 BMW 325ci 5MT (sold) 1988 Volvo 740 Turbo 4MT w/ electric OD/5th gear (sold)

03-19-2015, 11:56 PM	#4
Burrcold Senior Member Join Date: Jul 2010 Drives: Subaru BRZ Limited Location: Toronto, Canada Posts: 2,624 Thanks: 763 Thanked 1,586 Times in 776 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	I'm happy with the feel but I also upgraded to MPSS's and that has helped (on stock rims). Could be just the nature of the OEM wheels that is messing with you. __________________

03-20-2015, 12:50 AM	#8
N1rve Senior Member Join Date: Oct 2013 Drives: 2019 BMW ///M4 Location: Los Angeles, CA Posts: 2,332 Thanks: 102 Thanked 1,167 Times in 714 Posts Mentioned: 28 Post(s) Tagged: 0 Thread(s)	I'm running 36 PSI Cold..which equates to about 39-40 PSI Hot. If I'm pushing the car through a corner, I can feel the car yaw and slide. __________________ N1rve 2019 BMW ///M4 - Alpine White \| Sakhir Orange/Black Leather \| M-DCT \| Executive Package \| 19" Black 437M Wheels \| Carbon Fiber Trim \| Sunroof \| Active Blind Spot \| Heated Steering Wheel \| Adaptive M Suspension

03-20-2015, 12:06 AM	#6
navanodd Senior Member Join Date: Nov 2013 Drives: 2013 BRZ Sport-tech WRB Location: Nova Scotia Posts: 308 Thanks: 95 Thanked 171 Times in 102 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I also run 35 psi. The nature of the BRZ suspension setup and front/rear balance is that at speed it will push a little bit, but is neutral enough that you should be able to control that easily enough with the throttle. The FRS (at least the 2013-14) was setup a little more tail happy, but unless you're on the throttle or inducing lift oversteer, the car will still push. When there is more weight over the front wheels, they need to do more work than the rears when turning.

03-20-2015, 07:35 AM	#11
ntron1 Sarcastic Bastard Join Date: Apr 2013 Drives: '13 DGM BRZ, '13 Mini, 1999 Blazer Location: Amish Land, PA Posts: 586 Thanks: 341 Thanked 336 Times in 182 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Yup, 36 cold on stock rubber and suspension. __________________

03-20-2015, 09:28 AM	#12
BRZZZZZZZZZZ Car Nut Join Date: Dec 2013 Drives: BMW 335d, Toyota Echo RS, FRS Location: Calgary Posts: 1,557 Thanks: 368 Thanked 603 Times in 346 Posts Mentioned: 12 Post(s) Tagged: 2 Thread(s)	I run -3 degrees of camber and 255s and I usually run about 32psi cold for daily driving and when I am at auto x closer to 27-28psi hot usually.

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