[Poncho38]

Hi everyone,

I have a set of OEM 415 wheels (225-45-R18) with winters on them for my 440xi Gran Coupe.

The tire pressure guide on the car says the fronts should be 33psi and rears 38 psi - (staggered setup).

Just had my winters put on today and noticed that the shop inflated both front and rear to 38 psi.

Is this right? I'm a newbie to the winter tire change game, and staggered vs. non-staggered setup.

Should the fronts be 33 psi (as indicated on the panel sitcker)? But the psi they indicate there is for a different set of wheels/tires.

Or am I ok with 38 psi all around?

[Poncho38]

Hmmm

I just called two different bimmer dealerships in the Toronto area to see what they said.

1) 33psi all around for a square setup.

2) 38 psi all around for a square setup b/c the air in the winter thins out.

what gives?

[bobblehead]

If you want to go with whatever the psi as found on your door jamb or gas door indication, then it is fine. For some, including me, I go with whatever gives me a better overall ride and handling, that would be 34 square setup.

[TheUltimateDrivingManiac]

Correct pressure for any factory approved tyre combination can be found in (surprise!) an owner’s manual. Winter tyres are marked as M+S there.

[440xiGCMsport]

I also over inflate winter tires when I put it on like the shop also because as it gets colder the psi in the tire will drop. Also with a little over inflation it will protect the rim if you run over a winter sized pot hole. when the temps drop you will most likely only be a few psi over inflated.