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Tire size · 18-inch wheel · about 31.6x10.4R18

265/65R18 tire size

Overall diameter, nominal31.6 in

Estimate ±802 mm

A 265/65R18 tire is 31.6 in (802 mm) tall and 10.4 in (265 mm) wide on a 18-inch wheel, with a 6.8 in sidewall, and turns about 639 times a mile.

Stock on the Chevrolet Colorado (2025–2026), Chevrolet Silverado 1500 (2007–2013 and 2020, with a package), Ford Explorer (2022–2024) and 1 more, per their makers’ documents.

Width
10.4 in
Sidewall
6.8 in
Wheel
18 in
Revs per mile
639

01 / Dimensions

265/65R18 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.

265/65R18

Estimate ±
Overall diameter
31.6 in 802 mm31.1 to 32.0 in for real tires
Section width
10.4 in 265 mm
Sidewall height
6.8 in 172 mm
Wheel diameter
18 in 457 mm
Circumference
99.2 in 2,519 mm
Revolutions per mile
639 397 per km630 to 649

02 / Stock on

Vehicles that leave the factory on 265/65R18

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 265/65R18 instead.

  • Chevrolet ColoradoMaker
    • 2025–2026 · Z71, Trail Bossprinted P265/65R18

    Chevrolet Colorado model years on 265/65R18:

    Its other stock sizes

    • 285/70R17 (2025–2026 · ZR2). 265/65R18 is 1.1 in shorter: with a speedometer set for 285/70R17 it reads 3.6% high, 57.9 mph at an indicated 60.
    • 255/55R20 (2025–2026 · Z71 with the Z71 with P255/55R20 all-season tires, with a package). 265/65R18 is 0.5 in taller: with a speedometer set for 255/55R20 it reads 1.6% low, 61.0 mph at an indicated 60.
    • 255/65R17 (2025–2026 · WT). 265/65R18 is 1.5 in taller: with a speedometer set for 255/65R17 it reads 4.8% low, 63.0 mph at an indicated 60.
  • Chevrolet Silverado 1500Maker
    • 2020 · Trim not specified with the 18 x 8.5 wheels with P265/65R18 tires (tire RPOs RKX, RBX, RI8)printed P265/65R18
    • 2013 · Trim not specified, XFE, Hybrid (1HY, 2HY) with the P265/65R18 tiresprinted P265/65R18
    • 2011–2012 · WT, LS, LT, LTZ, XFE, Hybrid (1HY, 2HY) with the P265/65R18 tiresprinted P265/65R18
    • 2010 · Trim not specified, XFE, Hybrid (1HY, 2HY) with the P265/65R18 tiresprinted P265/65R18
    • 2007–2009 · Trim not specified with the P265/65R18 tiresprinted P265/65R18

    Chevrolet Silverado 1500 model years on 265/65R18:

    Its other stock sizes

    • 275/65R18 (2020 · Trail Boss). 265/65R18 is 0.5 in shorter: with a speedometer set for 275/65R18 it reads 1.6% high, 59.0 mph at an indicated 60.
    • 275/55R20 (2007–2013 · Trim not specified Short bed/Standard bed, XFE, Hybrid (1HY, 2HY) with the P275/55R20 tires, with a package). 265/65R18 is 0.3 in shorter: with a speedometer set for 275/55R20 it reads 1.1% high, 59.3 mph at an indicated 60.
    • 265/70R17 (2007–2013 · Trim not specified, XFE, Hybrid (1HY, 2HY) with the P265/70R17 tires, with a package). 265/65R18 is the same height as 265/70R17, so a speedometer set for it reads true.
    • 255/70R17 (2020 · WT Special Service Vehicle; Trim not specified with the 17 x 8 wheels with P255/70R17 tires (tire RPOs RBZ, RC3, RC5)). 265/65R18 is 0.5 in taller: with a speedometer set for 255/70R17 it reads 1.6% low, 61.0 mph at an indicated 60.
    • 245/70R17 (2007–2013 · Trim not specified, XFE, Hybrid (1HY, 2HY) with the P245/70R17 tires; Trim not specified, XFE, Hybrid (1HY, 2HY) with the LT245/70R17 tires, with a package). 265/65R18 is 1.1 in taller: with a speedometer set for 245/70R17 it reads 3.4% low, 62.1 mph at an indicated 60.
  • Ford ExplorerMaker
    • 2022–2024 · Timberlineprinted P265/65R18

    Ford Explorer model years on 265/65R18:

  • Toyota TacomaMaker
    • 2025–2026 · TRD Sport, Limitedprinted 265/65R18
    • 2024 · TRD Sport i-FORCE 2.4L turbocharged 4-cylinder; TRD Sport 5-ft bed i-FORCE MAX 2.4L turbocharged 4-cylinder hybrid; Limitedprinted 265/65R18

    Toyota Tacoma model years on 265/65R18:

    Its other stock sizes

    • 265/70R18 (2024–2026 · TRD Off-Road 5-ft bed i-FORCE MAX 2.4L turbocharged 4-cylinder hybrid; TRD Pro, Trailhunter). 265/65R18 is 1.0 in shorter: with a speedometer set for 265/70R18 it reads 3.3% high, 58.1 mph at an indicated 60.
    • 265/70R17 (2024–2026 · TRD PreRunner, TRD Off-Road i-FORCE 2.4L turbocharged 4-cylinder). 265/65R18 is the same height as 265/70R17, so a speedometer set for it reads true.
    • 245/70R17 (2024–2026 · SR; SR5). 265/65R18 is 1.1 in taller: with a speedometer set for 245/70R17 it reads 3.4% low, 62.1 mph at an indicated 60.

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 265/65R18

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 265/65R18
SizeTallinHeightvs 265/65R18Widthvs 265/65R18At an indicated 60true mphCompare
255/70R1832.1+0.5 in−0.4 in60.960.0 to 61.8Compare →
275/65R1832.1+0.5 in+0.4 in61.060.1 to 61.9Compare →
245/75R1832.5+0.9 in−0.8 in61.760.8 to 62.6Compare →

Next sizes down

Next sizes down, compared with 265/65R18
SizeTallinHeightvs 265/65R18Widthvs 265/65R18At an indicated 60true mphCompare
245/70R1831.5−0.1 in−0.8 in59.959.0 to 60.8Compare →
285/60R1831.5−0.1 in+0.8 in59.858.9 to 60.7Compare →

About as tall, other wheels

About as tall, other wheels, compared with 265/65R18
SizeTallinHeightvs 265/65R18Widthvs 265/65R18At an indicated 60true mphCompare
245/60R2031.6±0.0 in−0.8 in60.059.1 to 60.9Compare →
265/70R1731.6±0.0 in±0.0 in60.159.2 to 61.0Compare →
265/75R1631.6+0.1 in±0.0 in60.259.3 to 61.1Compare →
265/55R2031.5−0.1 in±0.0 in59.858.9 to 60.7Compare →

04 / Next

Compare it with your size

Tire size calculator265/65R18 against 255/70R18, or any two sizes: height, speedometer and gearing.Compare sizesTire sizes by vehicleEvery stock size on the trucks and SUVs we cover.Browse sizesChevrolet Colorado tiresStock tires and wheels by trim, and what bigger tires change on the Chevrolet Colorado.See the tiresChevrolet Silverado 1500 tiresStock tires and wheels by trim, and what bigger tires change on the Chevrolet Silverado 1500.See the tires

05 / FAQ

Questions people ask

What is 265/65R18 in inches?

About 31.6x10.4R18: 31.6 in tall and 10.4 in wide on a 18-inch wheel.

Which vehicles come with 265/65R18 tires?

In our data: Chevrolet Colorado (2025–2026), Chevrolet Silverado 1500 (2007–2013 and 2020, with a package), Ford Explorer (2022–2024) and Toyota Tacoma (2024–2026).

How does 265/65R18 compare with the Chevrolet Silverado 1500’s other stock sizes?

265/65R18 is 0.5 in shorter: with a speedometer set for 275/65R18 it reads 1.6% high, 59.0 mph at an indicated 60. 265/65R18 is 0.3 in shorter: with a speedometer set for 275/55R20 it reads 1.1% high, 59.3 mph at an indicated 60. 265/65R18 is the same height as 265/70R17, so a speedometer set for it reads true.

What is the next size up from 265/65R18?

255/70R18: about 0.5 in taller and 0.4 in narrower. On a speedometer set for 265/65R18 it reads 1.5% low (60.9 mph at an indicated 60).