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Tire size · 18-inch wheel · about 32.5x9.6R18

245/75R18 tire size

Overall diameter, nominal32.5 in

Estimate ±825 mm

A 245/75R18 tire is 32.5 in (825 mm) tall and 9.6 in (245 mm) wide on a 18-inch wheel, with a 7.2 in sidewall, and turns about 621 times a mile.

Stock on the Toyota Tundra (2022–2026), per their makers’ documents.

Width
9.6 in
Sidewall
7.2 in
Wheel
18 in
Revs per mile
621

01 / Dimensions

245/75R18 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.

245/75R18

Estimate ±
Overall diameter
32.5 in 825 mm32.0 to 33.0 in for real tires
Section width
9.6 in 245 mm
Sidewall height
7.2 in 184 mm
Wheel diameter
18 in 457 mm
Circumference
102.0 in 2,591 mm
Revolutions per mile
621 386 per km612 to 631

02 / Stock on

Vehicles that leave the factory on 245/75R18

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 245/75R18 instead.

  • Toyota TundraMaker
    • 2022–2026 · SRprinted P245/75R18

    Toyota Tundra model years on 245/75R18:

    Its other stock sizes

    • 265/70R18 (2022–2026 · SR5). 245/75R18 is 0.1 in shorter: with a speedometer set for 265/70R18 it reads 0.4% high, 59.7 mph at an indicated 60.
    • 285/65R18 (2022–2026 · TRD Pro). 245/75R18 is 0.1 in shorter: with a speedometer set for 285/65R18 it reads 0.4% high, 59.8 mph at an indicated 60.
    • 265/60R20 (2022–2026 · Limited, Platinum, 1794 Edition). 245/75R18 is 0.1 in shorter: with a speedometer set for 265/60R20 it reads 0.2% high, 59.9 mph at an indicated 60.
    • 265/50R22 (2022–2026 · Capstone). 245/75R18 is the same height as 265/50R22, so a speedometer set for it reads true.

Documents last checked . 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 245/75R18

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 245/75R18
SizeTallinHeightvs 245/75R18Widthvs 245/75R18At an indicated 60true mphCompare
285/65R1832.6+0.1 in+1.6 in60.259.3 to 61.1Compare →
265/70R1832.6+0.1 in+0.8 in60.359.4 to 61.2Compare →
275/70R1833.2+0.7 in+1.2 in61.360.4 to 62.2Compare →

Next sizes down

Next sizes down, compared with 245/75R18
SizeTallinHeightvs 245/75R18Widthvs 245/75R18At an indicated 60true mphCompare
275/65R1832.1−0.4 in+1.2 in59.358.4 to 60.2Compare →
255/70R1832.1−0.4 in+0.4 in59.258.3 to 60.1Compare →

About as tall, other wheels

About as tall, other wheels, compared with 245/75R18
SizeTallinHeightvs 245/75R18Widthvs 245/75R18At an indicated 60true mphCompare
265/50R2232.4±0.0 in+0.8 in59.959.0 to 60.8Compare →
265/60R2032.5+0.1 in+0.8 in60.159.2 to 61.0Compare →
325/40R2232.2−0.2 in+3.1 in59.658.7 to 60.5Compare →
285/70R1732.7+0.2 in+1.6 in60.459.5 to 61.4Compare →

04 / Next

Compare it with your size

Tire size calculator245/75R18 against 285/65R18, or any two sizes: height, speedometer and gearing.Compare sizesTire sizes by vehicleEvery stock size on the trucks and SUVs we cover.Browse sizesToyota Tundra tiresStock tires and wheels by trim, and what bigger tires change on the Toyota Tundra.See the tires

05 / FAQ

Questions people ask

What is 245/75R18 in inches?

About 32.5x9.6R18: 32.5 in tall and 9.6 in wide on a 18-inch wheel.

Which vehicles come with 245/75R18 tires?

In our data: Toyota Tundra (2022–2026).

How does 245/75R18 compare with the Toyota Tundra’s other stock sizes?

245/75R18 is 0.1 in shorter: with a speedometer set for 265/70R18 it reads 0.4% high, 59.7 mph at an indicated 60. 245/75R18 is 0.1 in shorter: with a speedometer set for 285/65R18 it reads 0.4% high, 59.8 mph at an indicated 60. 245/75R18 is 0.1 in shorter: with a speedometer set for 265/60R20 it reads 0.2% high, 59.9 mph at an indicated 60.

What is the next size up from 245/75R18?

285/65R18: about 0.1 in taller and 1.6 in wider. On a speedometer set for 245/75R18 it reads 0.4% low (60.2 mph at an indicated 60).