Tire Pressures in 2020

[Dano516]

Hello all, my tire pressure light came on a few days ago, and I decided to fill them up. I am running 225/40 and 255/35 michelin pilot SS.

Is there any correct psi to fill them up at? I got a variety of opinions throughout different forums so I simply did 33psi in the front and 36psi in the rear. Seems as if all my tires had been at 32psi.

Any feedback would be greatly appreciated!

[Fried_Chicken]

33/36 is what I would run.

[BMWCurves]

Hello all, my tire pressure light came on a few days ago, and I decided to fill them up. I am running 225/40 and 255/35 michelin pilot SS.

Is there any correct psi to fill them up at? I got a variety of opinions throughout different forums so I simply did 33psi in the front and 36psi in the rear. Seems as if all my tires had been at 32psi.

Any feedback would be greatly appreciated!

See my old thread on it if you want some historical values: http://www.zhpmafia.com/forums/showthread.php?17421-Tire-Inflation-Thread-What-Pressure-Should-My-Tires-Be-Inflated-To

[pedro2u]

it rarely gets remembered but and don't forget to check your spare........... 60 psi (61 for the convertibles)

[Galapolis]

You should use the manufacturer tire pressures which should be on a label in your door sill. If you are going for max performance, tire pressure will depend on the tire model. Different tires are best at different pressures. Personally, I run 32/35 most of the time but I'll go to 38/38 for cruising and 34/34 for mountain roads.

[thinkpad240]

I've used Michelin Pilot SS within last 15+ years on E46 with slight negative camber per OEM spec. 32\33F and 34\35R always give me a good balance for traction and tread life since I'm usually the only occupant in the car. Being off 1 PSI makes little difference. Towards the last 10k miles of tire life, I will usually use 31F\31R. I drive normal style for work and weekends. For tread life, I average 30k miles for front and 45k miles on rear. All my tires still needed rotating about mid-life to balance wear. It's important to also avoid lacerating and cracked roads sections when possible. If in doubt, check the door sills.

[fredo]

I've used Michelin Pilot SS within last 15+ years on E46 with slight negative camber per OEM spec. 32\33F and 34\35R always give me a good balance for traction and tread life since I'm usually the only occupant in the car. Being off 1 PSI makes little difference. Towards the last 10k miles of tire life, I will usually use 31F\31R. I drive normal style for work and weekends. For tread life, I average 30k miles for front and 45k miles on rear. All my tires still needed rotating about mid-life to balance wear. It's important to also avoid lacerating and cracked roads sections when possible. If in doubt, check the door sills.

Are you using square setup ? I believe so, since you mention tire rotation. Please confirm.

[thinkpad240]

No. It's a staggered OEM setup (225/40-18 F and 255/35-18 R) with Michelin PSS, (both tire and wheel ) left to\right only.

[Dano516]

33/36 is what I would run.

Thanks! Seems smooth as of now!

[Dano516]

See my old thread on it if you want some historical values: http://www.zhpmafia.com/forums/showthread.php?17421-Tire-Inflation-Thread-What-Pressure-Should-My-Tires-Be-Inflated-To

Thanks! I think I'm playing it pretty safe in between what parameters have been set in the past.

[Dave1027]

If your tire pressure light came on and you had all your tires at 32 lbs then there may be something else going on. The wheels don't have pressure sensors in them. Wheel sensors monitor the speed of each wheel's rotation and when the computer sees a discrepancy it will kick on the tire pressure light. As long as your tires are all about the same pressure the light won't come on. Only time I had my light come on is when I had a flat in one. I run mine about 32 lbs.