2024 Porsche Taycan tire size

Most common factory size

P265/35R21

Tire sizes by trim

Source marks: one source

2024 Porsche Taycan tire size by trim
Size	Trims	Width, mm	Sidewall, % of width	Rim, in	Diameter, in	Sidewall, in	Revs per mile
P265/35R21	RWD, 4S AWD, GTS AWD, GTS Sport Turismo AWD, Turbo AWD, Turbo S AWD +1 more	265	35	21	28.30	3.65	713
P275/45R19	Cross Turismo 4 AWD, Cross Turismo 4S AWD, Cross Turismo Turbo AWD	275	45	19	28.74	4.87	702

What P265/35R21 means
Part	Number	Meaning
Type	P	Passenger car tire.
Width	265 mm	Tread width. 10.4 in.
Sidewall	35	Sidewall height is 35% of the width.
Construction	R	Radial tire.
Rim	21 in	Fits 21 in wheels.

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

Sizes within 3% of P265/35R21
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
235/45R20	20	28.33	+0.1%	59.9 mph
265/40R20	20	28.35	+0.2%	59.9 mph
305/35R20	20	28.41	+0.4%	59.8 mph
255/40R20	20	28.03	-1.0%	60.6 mph
275/35R21	21	28.58	+1.0%	59.4 mph
255/35R21	21	28.03	-1.0%	60.6 mph
225/45R20	20	27.97	-1.2%	60.7 mph
275/40R20	20	28.66	+1.3%	59.3 mph

Sizes within 3% of P275/45R19
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
225/55R19	19	28.74	0.0%	60.0 mph
245/45R20	20	28.68	-0.2%	60.1 mph
275/40R20	20	28.66	-0.3%	60.2 mph
245/50R19	19	28.65	-0.3%	60.2 mph
225/60R18	18	28.63	-0.4%	60.2 mph
245/55R18	18	28.61	-0.5%	60.3 mph
325/35R20	20	28.96	+0.7%	59.6 mph
285/40R20	20	28.98	+0.8%	59.5 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.