2026 Jeep Grand Wagoneer L tire size

Most common factory size

P275/55R20

Tire sizes by trim

Source marks: one source

2026 Jeep Grand Wagoneer L tire size by trim
Size	Trims	Width, mm	Sidewall, % of width	Rim, in	Diameter, in	Sidewall, in	Revs per mile
P275/55R20	4x2, 4x4, Limited Altitude 4WD, Limited Reserve 4WD	275	55	20	31.91	5.95	632
P285/45R22	85th Anniversary Edition 4WD, Summit Obsidian 4WD, Summit Reserve 4WD	285	45	22	32.10	5.05	628

What P275/55R20 means
Part	Number	Meaning
Type	P	Passenger car tire.
Width	275 mm	Tread width. 10.8 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 P275/55R20
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
275/50R21	21	31.83	-0.3%	60.2 mph
305/50R20	20	32.01	+0.3%	59.8 mph
255/60R20	20	32.05	+0.4%	59.7 mph
255/65R19	19	32.05	+0.4%	59.7 mph
245/60R20	20	31.57	-1.0%	60.6 mph
265/55R20	20	31.48	-1.4%	60.8 mph
265/60R20	20	32.52	+1.9%	58.9 mph
285/50R20	20	31.22	-2.2%	61.3 mph

Sizes within 3% of P285/45R22
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
285/40R23	23	31.98	-0.4%	60.2 mph
275/50R21	21	31.83	-0.8%	60.5 mph
265/50R22	22	32.43	+1.0%	59.4 mph
275/45R22	22	31.74	-1.1%	60.7 mph
275/50R22	22	32.83	+2.3%	58.7 mph
295/40R22	22	31.29	-2.5%	61.5 mph
275/55R21	21	32.91	+2.5%	58.5 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.