Barrels41

I picked up my 2016 A6 2.0 18" tire car several weeks ago. They have Nitro-Air. It was a rainy day. The salesman said tires were inflated to the door sticker pressure. I checked them and intended to use the standard load pressures in the owners manual, 33/32. I was shocked to find all 4 tires were inflated to close to 50 lb.

Inyoury

Wow. You are lucky you checked them early. Crazy how the dealer didn't even check it for the predelivery inspection.

irenesbob

Just remember that tire pressure should be measured after the car has not been driven for a while (driving at medium/high speed increases the pressure – this is normal). Let it sit out of the sun and see what the reading is. For every 10 degrees the ambient air temperature moves (either way) the PSI (pounds per square inch) of the tire pressure changes 1 PSI. If the dealer had set them indoors where it is cool to 38 PSI and then you drove for a while and measured it the PSI could have gone up considerably. In a way it is better if the dealer overinflated the tires, since you can bleed them down to where you want them (per the door post). Had they underinflated them, where would you get the nitro to pump them up? Just looking at the rosy side of a screw-up lol!

uberwgn

That's basically the same as my car when I picked it up. All tires precisely at 48lbs. The factory likely pumps up the tires hard because they don't know how long a car might be sitting for prior to sale/delivery.


Door jamb sticker rule went into effect years ago. I think some of our members are very young. Anyone recognize this?

Barrels41

I know that driving and temps raises the pressure. I have to check pressures once a month. I suppose I can get Nitro at COSTCO if I don't go to the dealer. I never asked for Nitro. It may be bogus anyway. It was an 11th hour dealer Pac. You can add air to Nitro. Better to have proper inflation than 100% Nitro. I am thinking of the recent news video of a car hydroplaining and almost going over the side of a bridge. Over inflation can reduce your tire footprint and lead to a skid.

MCRN

Tires are overinflated beyond normal pressure from the factory, and the dealer prep sheet also has recommended inflations for cars that are to be stored on the lot - sounds like your dealer didn't adjust during PDI, which happens often.

Both are reasonably higher than what you should be driving around at. Tire pressure is really a preference thing. I don't like the feel of the car when mine are set at normal load, so I go about 1-2 PSI above normal. Keep in mind Audis have a higher weight distribution over the font wheels so you will usually end up running higher pressures in the front.

tenspeed

Ford Exploder

It took the lime light off the Ford Pinto "Chariot of Fire" model.

Hulamau

Yep just checked my new car and my Pirelli P-Zero 255/35/R 20 -97Y rated tires with those 20" rims requite 44lbs front and 46lbs rear tire pressure .

My 245/40/R 18 100H Pirelli P6s on both my now no longer mine 2012 A4 and is the same pressure with my wife's 2015 A4 had the same-sized tires but P7 Centuratos in which both hers and mine called for 36lbs front and 38lbs rear on the door label.

snagitseven

As always, a reminder. The door label PSIs are for a full load, driver, 3 passemgers and a full trunk. The manual PSIs are for a standard load, driver and 1 passenger (although many will add a bit to the manual's numbers to their taste). The P-Zeros PSIs at 44/48 are from the door label and are too high for everyday driving. I had those tires on from the factory (for only about a week) and my manual PSIs are listed at 39/36 for summer 255/35-20.

Also, Audi lists all of their PSIs as cold pressure settings so they should be checked before driving.

Barrels41

I agree a bit more air pressure beats being low.