Tire size · 15-inch wheel

31x10.50R15 tire size

Overall diameter, nominal31.0 in

Estimate ±787 mm

A 31x10.50R15 tire is 31.0 in (787 mm) tall and 10.5 in (267 mm) wide on a 15-inch wheel, with a 8.0 in sidewall, and turns about 651 times a mile.

Stock on the Toyota Tacoma (2000, with a package), per their makers’ documents.

Width: 10.5 in
Sidewall: 8.0 in
Wheel: 15 in
Revs per mile: 651

01 / Dimensions

31x10.50R15 in inches and millimeters

What the size code works out to. A real tire of the size measures within about 1.5% of it, by brand, tread, wheel width and pressure.

31x10.50R15

Estimate ±

Overall diameter: 31.0 in 787 mm30.5 to 31.5 in for real tires
Section width: 10.5 in 267 mm
Sidewall height: 8.0 in 203 mm
Wheel diameter: 15 in 381 mm
Circumference: 97.4 in 2,474 mm
Revolutions per mile: 651 404 per km641 to 660

02 / Stock on

Vehicles that leave the factory on 31x10.50R15

Which configurations run it in which model years, printed the way each maker prints the size, and how it compares with the vehicle’s other stock sizes. A speedometer set for one of those reads off by the amount shown when you fit 31x10.50R15 instead.

Toyota TacomaMaker
- 2000 · PreRunner with the Available tiresprinted 31x10.5R15
Toyota Tacoma model years on 31x10.50R15:
- Toyota Tacoma 1st gen (1995–2004): specs
Its other stock sizes
- 265/75R15 (2000 · Limited, Base 2.7L 4-cylinder/3.4L V6 4x4 with the Available tires, with a package). 31x10.50R15 is 0.4 in taller: with a speedometer set for 265/75R15 it reads 1.1% low, 60.7 mph at an indicated 60.
- 225/75R15 (2000 · Limited, Base 2.7L 4-cylinder/3.4L V6 4x4, PreRunner). 31x10.50R15 is 2.7 in taller: with a speedometer set for 225/75R15 it reads 8.8% low, 65.8 mph at an indicated 60.
- 215/70R14 (2000 · Base XtraCab 2.4L 4-cylinder/3.4L V6 4x2). 31x10.50R15 is 5.1 in taller: with a speedometer set for 215/70R14 it reads 16.6% low, 72.0 mph at an indicated 60.
- 195/75R14 (2000 · Base Regular Cab 2.4L 4-cylinder). 31x10.50R15 is 5.5 in taller: with a speedometer set for 195/75R14 it reads 17.7% low, 72.9 mph at an indicated 60.

Documents last checked Oct 9, 2026. How we read them and what the marks mean: how we source the numbers. A figure doesn’t match its document? Report a wrong number.

03 / Nearby sizes

Sizes either side of 31x10.50R15

The nearest common upsizes and the next sizes down on the same wheel, from the stock sizes we cover and the sizes owners usually step up to, and sizes about as tall on another wheel.

Nearest sizes up

Nearest sizes up, compared with 31x10.50R15
Size	Tallin	Heightvs 31x10.50R15	Widthvs 31x10.50R15	At an indicated 60true mph	Compare
33x12.50R15	33.0	+2.0 in	+2.0 in	63.962.9 to 64.8	Compare →
35x12.50R15	35.0	+4.0 in	+2.0 in	67.766.7 to 68.8	Compare →

Next sizes down

Next sizes down, compared with 31x10.50R15
Size	Tallin	Heightvs 31x10.50R15	Widthvs 31x10.50R15	At an indicated 60true mph	Compare
265/75R15	30.6	−0.4 in	−0.1 in	59.358.4 to 60.2	Compare →
30x9.50R15	30.0	−1.0 in	−1.0 in	58.157.2 to 58.9	Compare →

About as tall, other wheels

About as tall, other wheels, compared with 31x10.50R15
Size	Tallin	Heightvs 31x10.50R15	Widthvs 31x10.50R15	At an indicated 60true mph	Compare
275/60R18	31.0	±0.0 in	+0.3 in	60.059.1 to 60.9	Compare →
285/40R22	31.0	±0.0 in	+0.7 in	60.059.1 to 60.9	Compare →
255/55R20	31.0	±0.0 in	−0.5 in	60.159.2 to 61.0	Compare →
255/65R18	31.1	+0.1 in	−0.5 in	60.159.2 to 61.0	Compare →

04 / Next

Compare it with your size

Tire size calculator31x10.50R15 against 33x12.50R15, or any two sizes: height, speedometer and gearing.Compare sizes Tire sizes by vehicleEvery stock size on the trucks and SUVs we cover.Browse sizes Toyota Tacoma tiresStock tires and wheels by trim, and what bigger tires change on the Toyota Tacoma.See the tires

05 / FAQ

Questions people ask

What is 31x10.50R15 in millimeters?

787 mm tall and 267 mm wide on a 15-inch (381 mm) wheel.

Which vehicles come with 31x10.50R15 tires?

In our data: Toyota Tacoma (2000, with a package).

How does 31x10.50R15 compare with the Toyota Tacoma’s other stock sizes?

31x10.50R15 is 0.4 in taller: with a speedometer set for 265/75R15 it reads 1.1% low, 60.7 mph at an indicated 60. 31x10.50R15 is 2.7 in taller: with a speedometer set for 225/75R15 it reads 8.8% low, 65.8 mph at an indicated 60. 31x10.50R15 is 5.1 in taller: with a speedometer set for 215/70R14 it reads 16.6% low, 72.0 mph at an indicated 60.

What is the next size up from 31x10.50R15?

33x12.50R15: about 2.0 in taller and 2.0 in wider. On a speedometer set for 31x10.50R15 it reads 6.1% low (63.9 mph at an indicated 60).