2026 Subaru Uncharted tire size

Most common factory size

P235/60R18

Tire sizes by trim

Source marks: one source

2026 Subaru Uncharted tire size by trim
Size	Trims	Width, mm	Sidewall, % of width	Rim, in	Diameter, in	Sidewall, in	Revs per mile
P235/60R18	Premium FWD, Sport AWD	235	60	18	29.10	5.55	693
P235/50R20	GT AWD	235	50	20	29.25	4.63	689

What P235/60R18 means
Part	Number	Meaning
Type	P	Passenger car tire.
Width	235 mm	Tread width. 9.3 in.
Sidewall	60	Sidewall height is 60% 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 P235/60R18
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
255/60R17	17	29.05	-0.2%	60.1 mph
255/55R18	18	29.04	-0.2%	60.1 mph
255/50R19	19	29.04	-0.2%	60.1 mph
235/65R17	17	29.03	-0.3%	60.2 mph
235/55R19	19	29.18	+0.3%	59.8 mph
215/70R17	17	28.85	-0.9%	60.5 mph
265/50R19	19	29.43	+1.1%	59.3 mph
225/55R19	19	28.74	-1.2%	60.7 mph

Sizes within 3% of P235/50R20
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
295/40R20	20	29.29	+0.1%	59.9 mph
235/55R19	19	29.18	-0.3%	60.2 mph
235/45R21	21	29.33	+0.3%	59.8 mph
265/40R21	21	29.35	+0.3%	59.8 mph
295/35R21	21	29.13	-0.4%	60.3 mph
265/45R20	20	29.39	+0.5%	59.7 mph
265/50R19	19	29.43	+0.6%	59.6 mph
255/50R19	19	29.04	-0.7%	60.4 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.