Just purchased a 2012 A6 Prestige, but it will be a few days before car arrives. Car has 255-40-19s on it. Just wondering: what is the size of the donut in the trunk? Someone told me that it is a 20 inch donut. Can anyone confirm or correct this info?

 

to the best of my knowledge, Audi doesn't do donuts (it would really mess up the quattro system)

 

Perhaps poor choice of words on my part. There is a full sized wheel and tire, and I am wondering what the size of it is. (I just bought a 2012 A6, and I will not have it in my possession until next week.) I am wondering about the size of the spare. The 2012 A6 that I bought has 255-40-19 inch tires on the ground.

 

Based on my A6 and my daughter's 2003 A4, your spare should be an exact duplicate of the four road tires. I would not expect anything less for ~$60k, especially given quattros intolerance for mismatched tire diameters.

 

The only time I've seen Audi ship out a "donut" was in my front wheel driven A3. but if you have Quattro I would agree with all of the above comments - with 60k down and Quattro drive there should be no size difference, usually they even have the exact same rim.

 

UPDATE from Z06bigbird:

Talked with parts dept mgrs at several Audi dealers. Donut size is 145-60-20. Same size donut for 2012 A6 with 18 inch tires, 19 inch tires, and 20 inch tires.

Height diff between donut and 18 inch = 9/10s of inch;
Height diff between donut and 19 inch = 6/10s of inch;

BTW, the 2012 A6 uses a total diff wheel hub size than the previous models. Other year wheels will not fit this vehicle--per the parts dept mgrs.

I guess we are lucky that we get a donut, as other manufacts give a can of gook to put into your flat tire. No jack, no donut or full size tire with many manufacts. That is a function of saving weight and theoretically increasing gas mileage. Full size spare no longer fits into the wheel well of most trunks.