2023 Audi e-tron tire size

Most common factory size

P255/50R20

Tire sizes by trim

Source marks: one source

2023 Audi e-tron tire size by trim
Size	Trims	Width, mm	Sidewall, % of width	Rim, in	Diameter, in	Sidewall, in	Revs per mile
P255/50R20	Premium AWD, Premium Plus AWD	255	50	20	30.04	5.02	671
P265/45R21	Chronos AWD	265	45	21	30.39	4.69	664

What P255/50R20 means
Part	Number	Meaning
Type	P	Passenger car tire.
Width	255 mm	Tread width. 10.0 in.
Sidewall	50	Sidewall height is 50% of the width.
Construction	R	Radial tire.
Rim	20 in	Fits 20 in wheels.

Within 3% of the stock diameter. A common shop guideline, not a maker spec.

Sizes within 3% of P255/50R20
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
255/45R21	21	30.04	-0.0%	60.0 mph
255/55R19	19	30.04	+0.0%	60.0 mph
285/45R20	20	30.10	+0.2%	59.9 mph
235/60R19	19	30.10	+0.2%	59.9 mph
285/40R21	21	29.98	-0.2%	60.1 mph
235/55R20	20	30.18	+0.5%	59.7 mph
275/50R19	19	29.83	-0.7%	60.4 mph
235/50R21	21	30.25	+0.7%	59.6 mph

Sizes within 3% of P265/45R21
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
265/40R22	22	30.35	-0.1%	60.1 mph
265/50R20	20	30.43	+0.1%	59.9 mph
295/45R20	20	30.45	+0.2%	59.9 mph
295/40R21	21	30.29	-0.3%	60.2 mph
235/50R21	21	30.25	-0.5%	60.3 mph
235/55R20	20	30.18	-0.7%	60.4 mph
275/40R22	22	30.66	+0.9%	59.5 mph
245/45R22	22	30.68	+1.0%	59.4 mph

Checked against 292 factory sizes listed for 2009-2027 US models.

Tire pressure is on the driver door sticker. Not in this data.

Optional wheel packages may differ.