2027 Cadillac LYRIQ tire size

Most common factory size

P265/50R20

Tire sizes by trim

Source marks: one source

2027 Cadillac LYRIQ tire size by trim
Size	Trims	Width, mm	Sidewall, % of width	Rim, in	Diameter, in	Sidewall, in	Revs per mile
P265/50R20	Luxury AWD, Luxury RWD, Sport AWD, Sport RWD, Premium Luxury AWD, Premium Luxury RWD +2 more	265	50	20	30.43	5.22	663
P275/40R22	Signature Luxury RWD, Signature Sport RWD, 4dr LYRIQ-V AWD, V Premium AWD, Signature Luxury AWD, Signature Sport AWD	275	40	22	30.66	4.33	658

What P265/50R20 means
Part	Number	Meaning
Type	P	Passenger car tire.
Width	265 mm	Tread width. 10.4 in.
Sidewall	50	Sidewall height is 50% 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 P265/50R20
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
295/45R20	20	30.45	+0.1%	60.0 mph
265/55R19	19	30.48	+0.1%	59.9 mph
265/45R21	21	30.39	-0.1%	60.1 mph
295/40R21	21	30.29	-0.5%	60.3 mph
235/50R21	21	30.25	-0.6%	60.4 mph
235/55R20	20	30.18	-0.8%	60.5 mph
275/45R21	21	30.74	+1.0%	59.4 mph
235/60R19	19	30.10	-1.1%	60.7 mph

Sizes within 3% of P275/40R22
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
245/45R22	22	30.68	+0.1%	60.0 mph
275/35R23	23	30.58	-0.3%	60.2 mph
275/45R21	21	30.74	+0.3%	59.8 mph
285/35R23	23	30.85	+0.6%	59.6 mph
265/45R21	21	30.39	-0.9%	60.5 mph
265/40R22	22	30.35	-1.0%	60.6 mph
285/40R22	22	30.98	+1.0%	59.4 mph
295/40R21	21	30.29	-1.2%	60.7 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.