2020 Ford F-150 tire size

Most common factory size

P275/65R18

Tire sizes by trim

Source marks: one source

2020 Ford F-150 tire size by trim
Size	Trims	Width, mm	Sidewall, % of width	Rim, in	Diameter, in	Sidewall, in	Revs per mile
P275/65R18	XLT 2WD SuperCab 6.5' Box, XLT 2WD SuperCab 8' Box, XLT SuperCrew RWD, XLT 4WD SuperCab 6.5' Box, XLT SuperCrew LB RWD, LARIAT 2WD SuperCab 6.5' Box +12 more	275	65	18	32.07	7.04	629
P275/55R20	XL 2WD SuperCab 6.5' Box, XL SuperCrew RWD, XL 4WD SuperCab 6.5' Box, XL SuperCrew LB RWD, XL SuperCrew 4WD, XL SuperCrew LB 4WD +6 more	275	55	20	31.91	5.95	632
P245/70R17	XL 2WD Reg Cab 6.5' Box, XL 2WD Reg Cab 8' Box, XL 4WD Reg Cab 6.5' Box, XL 4WD Reg Cab 8' Box, Super Cab XL 8 ft 2WD, XLT 2WD Reg Cab 6.5' Box +2 more	245	70	17	30.50	6.75	661
P265/70R17	XLT 2WD Reg Cab 8' Box, XLT 4WD Reg Cab 8' Box	265	70	17	31.61	7.30	638
LT315/70R17	Raptor 4WD SuperCab 5.5' Box, Raptor SuperCrew 4WD	315	70	17	34.36	8.68	587
P245/45R22	Limited SuperCrew RWD, Limited SuperCrew 4WD	245	45	22	30.68	4.34	657

What P275/65R18 means
Part	Number	Meaning
Type	P	Passenger car tire.
Width	275 mm	Tread width. 10.8 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 P275/65R18
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
255/75R17	17	32.06	-0.0%	60.0 mph
255/70R18	18	32.06	-0.1%	60.0 mph
255/65R19	19	32.05	-0.1%	60.0 mph
235/80R17	17	31.80	-0.8%	60.5 mph
245/75R18	18	32.47	+1.2%	59.3 mph
265/70R17	17	31.61	-1.5%	60.9 mph
265/65R18	18	31.56	-1.6%	61.0 mph
285/65R18	18	32.59	+1.6%	59.1 mph

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 P245/70R17
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
265/60R18	18	30.52	+0.1%	60.0 mph
245/75R16	16	30.47	-0.1%	60.1 mph
265/65R17	17	30.56	+0.2%	59.9 mph
285/65R16	16	30.59	+0.3%	59.8 mph
265/70R16	16	30.61	+0.3%	59.8 mph
215/85R16	16	30.39	-0.4%	60.2 mph
255/70R16	16	30.06	-1.5%	60.9 mph
255/65R17	17	30.05	-1.5%	60.9 mph

Sizes within 3% of P265/70R17
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
265/65R18	18	31.56	-0.1%	60.1 mph
265/75R16	16	31.65	+0.1%	59.9 mph
245/70R18	18	31.50	-0.3%	60.2 mph
245/75R17	17	31.47	-0.4%	60.3 mph
285/60R18	18	31.46	-0.4%	60.3 mph
235/80R17	17	31.80	+0.6%	59.6 mph
255/70R18	18	32.06	+1.4%	59.2 mph
255/75R17	17	32.06	+1.4%	59.2 mph

Sizes within 3% of LT315/70R17
Size	Rim, in	Diameter, in	Change	Speedo reads at 60 mph
325/65R18	18	34.63	+0.8%	59.5 mph
305/70R18	18	34.81	+1.3%	59.2 mph
285/75R18	18	34.83	+1.4%	59.2 mph
285/75R17	17	33.83	-1.5%	60.9 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.