2022 Audi TT tire size

Most common factory size

P255/30R20

Tire sizes by trim

Source marks: one source

2022 Audi TT tire size by trim
Size	Trims	Width, mm	Sidewall, % of width	Rim, in	Diameter, in	Sidewall, in	Revs per mile
P255/30R20	RS AWD, TTS AWD	255	30	20	26.02	3.01	775
P245/40R18	AWD	245	40	18	25.72	3.86	784
P245/35R19	AWD	245	35	19	25.75	3.38	783

What P255/30R20 means
Part	Number	Meaning
Type	P	Passenger car tire.
Width	255 mm	Tread width. 10.0 in.
Sidewall	30	Sidewall height is 30% 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 P255/30R20
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
255/35R19	19	26.03	+0.0%	60.0 mph
225/40R19	19	26.09	+0.2%	59.9 mph
225/35R20	20	26.20	+0.7%	59.6 mph
305/30R19	19	26.20	+0.7%	59.6 mph
265/30R20	20	26.26	+0.9%	59.5 mph
245/30R20	20	25.79	-0.9%	60.5 mph
245/35R19	19	25.75	-1.0%	60.6 mph
265/35R19	19	26.30	+1.1%	59.4 mph

Sizes within 3% of P245/40R18
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
285/30R19	19	25.73	+0.1%	60.0 mph
245/35R19	19	25.75	+0.1%	59.9 mph
245/45R17	17	25.68	-0.1%	60.1 mph
215/45R18	18	25.62	-0.4%	60.2 mph
275/35R18	18	25.58	-0.5%	60.3 mph
225/50R17	17	25.86	+0.6%	59.7 mph
205/55R17	17	25.88	+0.6%	59.6 mph
235/35R19	19	25.48	-0.9%	60.6 mph

Sizes within 3% of P245/35R19
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
285/30R19	19	25.73	-0.1%	60.0 mph
245/30R20	20	25.79	+0.1%	59.9 mph
245/40R18	18	25.72	-0.1%	60.1 mph
215/45R18	18	25.62	-0.5%	60.3 mph
275/35R18	18	25.58	-0.7%	60.4 mph
225/45R18	18	25.97	+0.9%	59.5 mph
255/30R20	20	26.02	+1.1%	59.4 mph
235/35R19	19	25.48	-1.1%	60.6 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.