2023 GMC Canyon tire size

Most common factory size

P265/65R18

Tire sizes by trim

Source marks: one source

2023 GMC Canyon tire size by trim
Size	Trims	Width, mm	Sidewall, % of width	Rim, in	Diameter, in	Sidewall, in	Revs per mile
P265/65R18	2WD Crew Cab Elevation, Elevation Crew Cab 4WD	265	65	18	31.56	6.78	639
P275/60R20	AT4 Crew Cab 4WD, Denali Crew Cab 4WD	275	60	20	32.99	6.50	611
LT285/70R17	AT4X Crew Cab 4WD	285	70	17	32.71	7.85	617

What P265/65R18 means
Part	Number	Meaning
Type	P	Passenger car tire.
Width	265 mm	Tread width. 10.4 in.
Sidewall	65	Sidewall height is 65% of the width.
Construction	R	Radial tire.
Rim	18 in	Fits 18 in wheels.

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

Sizes within 3% of P265/65R18
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
265/70R17	17	31.61	+0.1%	59.9 mph
245/70R18	18	31.50	-0.2%	60.1 mph
245/75R17	17	31.47	-0.3%	60.2 mph
285/60R18	18	31.46	-0.3%	60.2 mph
235/80R17	17	31.80	+0.8%	59.5 mph
255/65R19	19	32.05	+1.5%	59.1 mph
255/70R18	18	32.06	+1.6%	59.1 mph
255/75R17	17	32.06	+1.6%	59.1 mph

Sizes within 3% of P275/60R20
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
255/65R20	20	33.05	+0.2%	59.9 mph
275/55R21	21	32.91	-0.3%	60.2 mph
265/60R20	20	32.52	-1.4%	60.9 mph
255/65R19	19	32.05	-2.9%	61.8 mph
255/60R20	20	32.05	-2.9%	61.8 mph

Sizes within 3% of LT285/70R17
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
265/70R18	18	32.61	-0.3%	60.2 mph
285/65R18	18	32.59	-0.4%	60.2 mph
245/75R18	18	32.47	-0.7%	60.4 mph
275/70R18	18	33.16	+1.4%	59.2 mph
275/65R18	18	32.07	-1.9%	61.2 mph
255/75R17	17	32.06	-2.0%	61.2 mph
255/70R18	18	32.06	-2.0%	61.2 mph
235/80R17	17	31.80	-2.8%	61.7 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.