2027 Buick Enclave tire size

Most common factory size

P255/55R20

Tire sizes by trim

Source marks: one source

2027 Buick Enclave tire size by trim
Size	Trims	Width, mm	Sidewall, % of width	Rim, in	Diameter, in	Sidewall, in	Revs per mile
P255/55R20	Preferred AWD, Preferred FWD, Sport Touring AWD, Sport Touring FWD	255	55	20	31.04	5.52	650
P245/45R22	Avenir FWD, Avenir AWD	245	45	22	30.68	4.34	657

What P255/55R20 means
Part	Number	Meaning
Type	P	Passenger car tire.
Width	255 mm	Tread width. 10.0 in.
Sidewall	55	Sidewall height is 55% 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 P255/55R20
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
255/60R19	19	31.05	+0.0%	60.0 mph
255/50R21	21	31.04	-0.0%	60.0 mph
235/65R19	19	31.03	-0.1%	60.0 mph
285/45R21	21	31.10	+0.2%	59.9 mph
235/60R20	20	31.10	+0.2%	59.9 mph
275/55R19	19	30.91	-0.4%	60.3 mph
285/50R20	20	31.22	+0.6%	59.7 mph
275/50R20	20	30.83	-0.7%	60.4 mph

Sizes within 3% of P245/45R22
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
275/40R22	22	30.66	-0.1%	60.0 mph
275/45R21	21	30.74	+0.2%	59.9 mph
275/35R23	23	30.58	-0.3%	60.2 mph
285/35R23	23	30.85	+0.6%	59.7 mph
265/45R21	21	30.39	-0.9%	60.6 mph
285/40R22	22	30.98	+1.0%	59.4 mph
265/40R22	22	30.35	-1.1%	60.7 mph
255/40R23	23	31.03	+1.1%	59.3 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.