Audi Q9 tire size
The most common factory tire size for the Audi Q9 is 285/45R21, on 3 of the 3 year and trim fits listed. Each year below lists the sizes its trims were built with (2027). Pick your year and trim to see the tires that fit.
Audi Q9 tire sizes by year
20273 sizes · 6 trims
285/45R21
285/35R23
Check your own tire
A trim can be sold with more than one wheel size. The size printed on the sidewall of your current tire, or on the placard in the driver's door jamb, is the one your vehicle has.