boltsfan

Been cold lately (for SoCal standards).

TPMS gave alert yesterday while driving to work. All tires seem a tad low when checked (between 30-34 PSI).

Just wondering what everyone is running with the 18" wheels.

Thanks!

uberwgn

See your Owner's Manual. It's the only place you'll find comprehensive inflation pressure for car sold in the USA.

boltsfan

I see the recommended PSI listed on the door pillar but I thought that was for a full load.

Just wondering what everyone is running...

precinder2

Like the poster above you said, check the owner's manual. There are plenty of people who drive with improperly inflated tires so I wouldn't take into account what others have their tires set at.

uberwgn

Correct, the B pillar label only shows MAX load (5 -150lb humans and 5 suitcases). This is a USA-only thing.

equ

I have a '10 18" sports package. Owner's manual says 32f/29r for low load, and 33f/35r for full (which is what is on the door).

After some experiments, I've settled on 33f/33r as the best combo. Note that this 33psi at 68F before driving. If you are measuring/pumping at a lower temperature, say low 50's, you can go down to 32 front and rear.

uberwgn

Yeah, that's pretty close to what I'm running in both our cars. I tend to set them around 34F/32R. (I over-inflate the tires the night before and bleed air off before driving the car the next morning.) I typically run the snow tires set ups a bit firmer, maybe 2 psi more.

I have yet to have 5 people and 5 suitcases in the car. The B pillar info found on USA cars is dis-information..thanks to the US Congress and their attempt at "doing good".

boltsfan

I set to the following per my owners manual:

32 front
33 rear

This is for a regular load.

uberwgn

For a 2012 A4 car? They must have changed the recommendations. There's a shot from my 2011 A4 (4cyl) car: