Optimal tire pressure for handling with stock Michelin tires - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

brillo · 09-21-2013, 04:48 PM

35psi cold seems too high and the steering feels a little light. What pressure have people found makes the most of the stock tires?

hanabie · 09-21-2013, 05:05 PM

whatever on the sticker.

brillo · 09-21-2013, 05:06 PM

35psi is what is on the sticker

m.wood0213 · 09-25-2013, 01:31 PM

what exactly does "cold" mean. 50*F or no heat in the tires from driving. IM curious because my TPMS light came on after the cold front last week and I need to inflate.

7thgear · 09-25-2013, 01:38 PM

cold is ambient temperature

also where did you get 35psi from? That's what i would recomend for a quick fix at an autocross

dial it down to around 28 and be happy.

m.wood0213 · 09-25-2013, 01:53 PM

Quote:

Originally Posted by brillo

35psi is what is on the sticker

Quote:

Originally Posted by 7thgear

cold is ambient temperature

also where did you get 35psi from? That's what i would recomend for a quick fix at an autocross

dial it down to around 28 and be happy.

What brillo said.

7thgear · 09-25-2013, 01:58 PM

right!

35 is correct on the sticker

i was thinking of my old vw which had 70 aspect tires.

honestly 35 is fine, not sure what you mean by light, car's pretty solid steering. Maybe you drove a car with stiffer/gripper tires before?

wparsons · 09-25-2013, 02:37 PM

35 is a good starting point, but to really get optimal grip you need to be reading the temperature across the width of the tire to see if certain parts are heating up more when lapping/racing. For the road, just stick with 35.

Weigaldo · 01-22-2016, 04:55 PM

I don't know which of the many threads has the most visibility, but I figured I'd add my two cents in one of them... For us with actual seasons, I see 35 PSI @ 50F as optimal. That way you have more contact patch at a lower PSI for snow/ice. Then when it's nice out, you can have less sidewall flex when cornering at higher speeds in dry conditions.

Packofcrows · 01-22-2016, 04:58 PM

I do -3 to -5 on most of my cars for looooong trips. When tested under heat, it's usually where it needs to be. I noticed better mpg on our Rav4 when i took air out.... havent tested FRS.... will do it in coming week for 3-4 gas tanks.

I'd say -3 to -5 when cold so that there is more surface area=more friction=more loud interior but feels nicer in corners? (grip-wise)

09-21-2013, 04:48 PM	#1
brillo Senior Member Join Date: Nov 2011 Drives: 2013 Firestorm FR-S Location: Houston Posts: 506 Thanks: 18 Thanked 77 Times in 64 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Optimal tire pressure for handling with stock Michelin tires 35psi cold seems too high and the steering feels a little light. What pressure have people found makes the most of the stock tires? __________________ 2013 Firestorm FR-S, MTX, build date 1/13.

09-21-2013, 05:06 PM	#3
brillo Senior Member Join Date: Nov 2011 Drives: 2013 Firestorm FR-S Location: Houston Posts: 506 Thanks: 18 Thanked 77 Times in 64 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	35psi is what is on the sticker __________________ 2013 Firestorm FR-S, MTX, build date 1/13.

09-25-2013, 01:38 PM	#5
7thgear i'm sorry, what? Join Date: Jan 2012 Drives: Canada Location: I rock a beat harder than you can beat it with rocks Posts: 4,399 Thanks: 357 Thanked 2,508 Times in 1,268 Posts Mentioned: 40 Post(s) Tagged: 3 Thread(s)	cold is ambient temperature also where did you get 35psi from? That's what i would recomend for a quick fix at an autocross dial it down to around 28 and be happy. __________________ don't you think if I was wrong, I'd know it?

09-25-2013, 01:58 PM	#7
7thgear i'm sorry, what? Join Date: Jan 2012 Drives: Canada Location: I rock a beat harder than you can beat it with rocks Posts: 4,399 Thanks: 357 Thanked 2,508 Times in 1,268 Posts Mentioned: 40 Post(s) Tagged: 3 Thread(s)	right! 35 is correct on the sticker i was thinking of my old vw which had 70 aspect tires. honestly 35 is fine, not sure what you mean by light, car's pretty solid steering. Maybe you drove a car with stiffer/gripper tires before? __________________ don't you think if I was wrong, I'd know it?

01-22-2016, 04:58 PM	#10
Packofcrows hey you, yeah you <3 Join Date: Jul 2012 Drives: 2014 37J FR-S Location: Monterey County, CA Posts: 2,715 Thanks: 905 Thanked 1,259 Times in 809 Posts Mentioned: 38 Post(s) Tagged: 3 Thread(s)	I do -3 to -5 on most of my cars for looooong trips. When tested under heat, it's usually where it needs to be. I noticed better mpg on our Rav4 when i took air out.... havent tested FRS.... will do it in coming week for 3-4 gas tanks. I'd say -3 to -5 when cold so that there is more surface area=more friction=more loud interior but feels nicer in corners? (grip-wise) __________________ Got my TRD wheels and TRD louvers. Thanks!!!

09-21-2013, 05:05 PM	#2
hanabie Senior Member Join Date: Feb 2012 Drives: WRB LMTD '13 Location: Phillips Ranch Posts: 1,246 Thanks: 184 Thanked 242 Times in 158 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	whatever on the sticker.

01-22-2016, 04:55 PM	#9
Weigaldo Senior Member Join Date: Nov 2015 Drives: 2016 Steel AT FRS Location: Chicago Posts: 114 Thanks: 25 Thanked 26 Times in 20 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I don't know which of the many threads has the most visibility, but I figured I'd add my two cents in one of them... For us with actual seasons, I see 35 PSI @ 50F as optimal. That way you have more contact patch at a lower PSI for snow/ice. Then when it's nice out, you can have less sidewall flex when cornering at higher speeds in dry conditions.

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