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Tire size · 17-inch wheel · about 30.1x10.0R17

255/65R17 tire size

Overall diameter, nominal30.1 in

Estimate ±763 mm

A 255/65R17 tire is 30.1 in (763 mm) tall and 10.0 in (255 mm) wide on a 17-inch wheel, with a 6.5 in sidewall, and turns about 671 times a mile.

Stock on the Chevrolet Colorado (2019–2022 and 2025–2026), Ford Ranger (2019–2021), Isuzu D-Max (2021–2025) and 2 more, per their makers’ documents.

Width
10.0 in
Sidewall
6.5 in
Wheel
17 in
Revs per mile
671

01 / Dimensions

255/65R17 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.

255/65R17

Estimate ±
Overall diameter
30.1 in 763 mm29.6 to 30.5 in for real tires
Section width
10.0 in 255 mm
Sidewall height
6.5 in 166 mm
Wheel diameter
17 in 432 mm
Circumference
94.4 in 2,398 mm
Revolutions per mile
671 417 per km661 to 681

02 / Stock on

Vehicles that leave the factory on 255/65R17

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 255/65R17 instead.

  • Chevrolet ColoradoMaker
    • 2025–2026 · WTprinted P255/65R17
    • 2021–2022 · WT; LT, Z71printed P255/65R17
    • 2019–2020 · LT, Z71printed P255/65R17

    Chevrolet Colorado model years on 255/65R17:

    Its other stock sizes

    • 285/70R17 (2025–2026 · ZR2). 255/65R17 is 2.7 in shorter: with a speedometer set for 285/70R17 it reads 8.8% high, 55.1 mph at an indicated 60.
    • 265/65R18 (2025–2026 · Z71, Trail Boss). 255/65R17 is 1.5 in shorter: with a speedometer set for 265/65R18 it reads 5.0% high, 57.1 mph at an indicated 60.
    • 255/55R20 (2025–2026 · Z71 with the Z71 with P255/55R20 all-season tires, with a package). 255/65R17 is 1.0 in shorter: with a speedometer set for 255/55R20 it reads 3.3% high, 58.1 mph at an indicated 60.
    • 265/70R16 (2019–2020 · WT). 255/65R17 is 0.6 in shorter: with a speedometer set for 265/70R16 it reads 1.8% high, 58.9 mph at an indicated 60.
    • 265/65R17 (2020 · ZR2). 255/65R17 is 0.5 in shorter: with a speedometer set for 265/65R17 it reads 1.7% high, 59.0 mph at an indicated 60.
  • Ford RangerMaker
    • 2019–2021 · XLT 4x2; XLT 4x4printed 255/65R17

    Ford Ranger model years on 255/65R17:

    Its other stock sizes

    • 265/70R17 (2021 · XLT SuperCrew 4x4, Lariat SuperCrew 4x4 with the Tremor Off-Road Package (91T), with a package). 255/65R17 is 1.6 in shorter: with a speedometer set for 265/70R17 it reads 5.2% high, 57.0 mph at an indicated 60.
    • 265/60R18 (2019–2021 · Lariat 4x2; Lariat 4x4). 255/65R17 is 0.5 in shorter: with a speedometer set for 265/60R18 it reads 1.6% high, 59.1 mph at an indicated 60.
    • 255/70R16 (2019–2021 · XL). 255/65R17 is the same height as 255/70R16, so a speedometer set for it reads true.
  • Isuzu D-MaxMaker
    • 2025 · Australia · SX; X-RIDERprinted 255/65R17
    • 2024 · Australia · SX; LS-M, X-RIDERprinted 255/65R17
    • 2021–2023 · Australia · SX; LS-Mprinted 255/65R17

    Isuzu D-Max model years on 255/65R17:

    Its other stock sizes

    • 275/65R17 (2025 · BLADE). 255/65R17 is 1.0 in shorter: with a speedometer set for 275/65R17 it reads 3.4% high, 58.0 mph at an indicated 60.
    • 265/60R18 (2021–2025 · LS-U, LS-U+; X-TERRAIN). 255/65R17 is 0.5 in shorter: with a speedometer set for 265/60R18 it reads 1.6% high, 59.1 mph at an indicated 60.
  • Mazda BT-50Maker
    • 2026 · Australia · XS, XT Single Cab 4x4; XS Dual Cab Pickup 4x4, XTprinted 255/65R17

    Mazda BT-50 model years on 255/65R17:

    Its other stock sizes

    • 265/60R18 (2026 · XTR, GT, BOSS, SP, Thunder). 255/65R17 is 0.5 in shorter: with a speedometer set for 265/60R18 it reads 1.6% high, 59.1 mph at an indicated 60.
  • Nissan NavaraMaker
    • 2025 · Australia · SL; ST; PRO-4Xprinted 255/65R17
    • 2024 · Australia · SL Dual Cab/King Cab; ST; PRO-4Xprinted 255/65R17

    Nissan Navara model years on 255/65R17:

    Its other stock sizes

    • 255/60R18 (2024–2025 · ST-X). 255/65R17 is the same height as 255/60R18, 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 255/65R17

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 255/65R17
SizeTallinHeightvs 255/65R17Widthvs 255/65R17At an indicated 60true mphCompare
245/70R1730.5+0.5 in−0.4 in60.960.0 to 61.8Compare →
265/65R1730.6+0.5 in+0.4 in61.060.1 to 61.9Compare →
235/75R1730.9+0.8 in−0.8 in61.760.7 to 62.6Compare →

Next sizes down

Next sizes down, compared with 255/65R17
SizeTallinHeightvs 255/65R17Widthvs 255/65R17At an indicated 60true mphCompare
235/70R1730.0−0.1 in−0.8 in59.858.9 to 60.7Compare →
245/65R1729.5−0.5 in−0.4 in59.058.1 to 59.9Compare →

About as tall, other wheels

About as tall, other wheels, compared with 255/65R17
SizeTallinHeightvs 255/65R17Widthvs 255/65R17At an indicated 60true mphCompare
255/60R1830.0±0.0 in±0.0 in60.059.1 to 60.9Compare →
255/70R1630.1±0.0 in±0.0 in60.059.1 to 60.9Compare →
255/55R1930.0±0.0 in±0.0 in60.059.1 to 60.9Compare →
255/50R2030.0±0.0 in±0.0 in60.059.1 to 60.9Compare →

04 / Next

Compare it with your size

Tire size calculator255/65R17 against 245/70R17, 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 tiresFord Ranger tiresStock tires and wheels by trim, and what bigger tires change on the Ford Ranger.See the tires

05 / FAQ

Questions people ask

What is 255/65R17 in inches?

About 30.1x10.0R17: 30.1 in tall and 10.0 in wide on a 17-inch wheel.

Which vehicles come with 255/65R17 tires?

In our data: Chevrolet Colorado (2019–2022 and 2025–2026), Ford Ranger (2019–2021), Isuzu D-Max (2021–2025), Mazda BT-50 (2026) and Nissan Navara (2024–2025).

How does 255/65R17 compare with the Chevrolet Colorado’s other stock sizes?

255/65R17 is 2.7 in shorter: with a speedometer set for 285/70R17 it reads 8.8% high, 55.1 mph at an indicated 60. 255/65R17 is 1.5 in shorter: with a speedometer set for 265/65R18 it reads 5.0% high, 57.1 mph at an indicated 60. 255/65R17 is 1.0 in shorter: with a speedometer set for 255/55R20 it reads 3.3% high, 58.1 mph at an indicated 60.

What is the next size up from 255/65R17?

245/70R17: about 0.5 in taller and 0.4 in narrower. On a speedometer set for 255/65R17 it reads 1.5% low (60.9 mph at an indicated 60).