255/65R19 in inches

A 255/65R19 tire is 32.1″ tall and 10.0″ wide, and fits a 19″ wheel. In inches it is written 32.1×10.0R19.

Diameter32.05″

Width10.04″

Sidewall6.53″

Drawn to scale. Nominal dimensions calculated from the size code.

Manufacturer data

How tall 255/65R19 tires really are

Heights published by BFGoodrich and Michelin for all 3 tires in this size. Their published revolutions per mile work out to 31.1″ under load (below).

Real 255/65R19 tires measure 32.09–32.10″, against 32.05″ from the size code. Every one runs taller than the size code.

Height under load31.1″

Published revs per mile (648) mean the tire rolls like a 31.1″ tire on the vehicle. Use this for speedometer calibration.

Weight spread35.9–51.6 lb

The lightest (Michelin X-Ice Snow, XL) is 15.7 lb lighter per corner than the heaviest (BFGoodrich All-Terrain T/A KO3, LT D).

3 tires in 255/65R19

Sort by the spec you care about.

	Load					Revs/mi	Source
Michelin X-Ice SnowWinter	XL · 114H	32.09	35.9	10.5	2,601	648	Spec page
Michelin Defender LTX M/S 2All-season	XL · 114H	32.10	36.8	11.0	2,601	648	Spec page
BFGoodrich All-Terrain T/A KO3All-terrain	LT D · 116S	32.10	51.6	15.0	2,835	648	Spec page

Is 255/65R19 a 32-inch tire?

≈32″

Yes. The size code works out to 32.05″, and the 3 tires here publish 32.09–32.10″, so people call it a 32.

All 32-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

Size	Diameter ″	vs 255/65R19	Difference
275/55R19	30.91	-1.14″	-3.6%
255/60R19	31.05	-1.00″	-3.1%
275/55R20	31.91	-0.14″	-0.4%
305/50R20	32.01	-0.04″	-0.1%
255/60R20	32.05	-0.00″	-0.0%
255/70R18	32.06	+0.00″	+0.0%
275/65R18	32.07	+0.02″	+0.1%
285/55R20	32.34	+0.29″	+0.9%
305/60R18	32.41	+0.36″	+1.1%
245/75R18	32.47	+0.42″	+1.3%

How to read 255/65R19

How to read any tire size

How 255/65R19 114H is printed on the sidewall. It's the most common code among the 3 tires here (2 of them); tires in this size come in other load and speed ratings too.

1255Section width

255 mm across the widest point, or 10.04 inches. Every 255 size

265Aspect ratio

A percentage, not a measurement: the sidewall is 65% as tall as the tire is wide, which is 165.8 mm or 6.53 inches.

3RConstruction

Radial construction.

419Wheel diameter

Mounts on a 19-inch wheel. Approved wheel widths run 7.0″ to 9.0″.

5114Load index

Each tire carries up to 2,601 lb (1,180 kg) at its maximum pressure.

6HSpeed rating

Rated for up to 130 mph sustained.

XLExtra load

Printed after the size.

Specification	Inches	Metric
Overall diameter	32.05	814 mm
Section width	10.04	255 mm
Sidewall height	6.53	165.8 mm
Circumference	100.7	2,558 mm
Revolutions per mile (calculated, unloaded)	629.2	391 per km
Revolutions per mile (published by manufacturers)	648	403 per km
Approved wheel width	7.0–9.0	178–229 mm

Speedometer error after switching to 255/65R19

Your actual speed– mph

Questions about 255/65R19

What is 255/65R19 in inches?

32.05 inches tall, 10.04 inches wide, on a 19-inch wheel. Written in inches, that is roughly 32.1×10.0R19.

How much does a 255/65R19 tire weigh?

Between 35.9 lb and 51.6 lb for the 3 tires listed here. The lightest is the Michelin X-Ice Snow (XL); the heaviest is the BFGoodrich All-Terrain T/A KO3 (LT D).

What wheel width do I need for 255/65R19?

Manufacturers approve 7.0–9.0″ wide wheels for this size.

How many revolutions per mile does a 255/65R19 make?

Published figures run 648 revolutions per mile. The calculated figure is 629.2, but manufacturers measure the tire under load, where it rolls on a smaller radius.

What is the difference between P255/65R19 and LT255/65R19?

Passenger tires (2 here) are built for passenger loads, with max loads of 2601 lb. Light-truck tires (1 here) come in heavier load ranges with max loads of 2835 lb, and are usually heavier with deeper tread.

How much taller is 255/65R19 than 255/60R19?

1.00 inches taller on paper (32.05″ vs 31.05″), which raises the axle about 0.50″. Your speedometer will read about 3.2% slow.