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Tire size · 17-inch wheel · about 32.1x10.0R17

255/75R17 tire size

Overall diameter, nominal32.1 in

Estimate ±814 mm

A 255/75R17 tire is 32.1 in (814 mm) tall and 10.0 in (255 mm) wide on a 17-inch wheel, with a 7.5 in sidewall, and turns about 629 times a mile.

Stock on the Ford Bronco (2021–2026), Jeep Gladiator (2024–2026) and Jeep Wrangler (2007–2014, 2016 and 2021–2025), per their makers’ documents.

Width
10.0 in
Sidewall
7.5 in
Wheel
17 in
Revs per mile
629

01 / Dimensions

255/75R17 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.

255/75R17

Estimate ±
Overall diameter
32.1 in 814 mm31.6 to 32.5 in for real tires
Section width
10.0 in 255 mm
Sidewall height
7.5 in 191 mm
Wheel diameter
17 in 432 mm
Circumference
100.7 in 2,558 mm
Revolutions per mile
629 391 per km620 to 639

02 / Stock on

Vehicles that leave the factory on 255/75R17

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 255/75R17 instead.

  • Ford BroncoMaker
    • 2023–2026 · Big Bendprinted P255/75R17
    • 2021–2022 · Big Bendprinted 255/75R17

    Ford Bronco model years on 255/75R17:

    Its other stock sizes

    • 37x12.50R17 (2022–2026 · Raptor). 255/75R17 is 4.9 in shorter: with a speedometer set for 37x12.50R17 it reads 15.4% high, 52.0 mph at an indicated 60.
    • 315/70R17 (2021–2026 · Heritage Edition, Stroppe Edition; Base, Outer Banks, Badlands with the Sasquatch Package (765); Big Bend with the Black Diamond Package (51D) + Sasquatch Package (765)). 255/75R17 is 2.3 in shorter: with a speedometer set for 315/70R17 it reads 7.2% high, 56.0 mph at an indicated 60.
    • 285/70R17 (2021–2026 · Badlands). 255/75R17 is 0.6 in shorter: with a speedometer set for 285/70R17 it reads 2.0% high, 58.8 mph at an indicated 60.
    • 255/70R18 (2021–2026 · Outer Banks). 255/75R17 is the same height as 255/70R18, so a speedometer set for it reads true.
    • 265/70R17 (2021–2026 · Big Bend with the Black Diamond Package (51D), Free Wheeling Package (51F) or Black Appearance Package (51E); Outer Banks with the Black Appearance Package (51E)). 255/75R17 is 0.5 in taller: with a speedometer set for 265/70R17 it reads 1.4% low, 60.9 mph at an indicated 60.
    • 255/70R16 (2021–2023 and 2025–2026 · Base). 255/75R17 is 2.0 in taller: with a speedometer set for 255/70R16 it reads 6.3% low, 64.0 mph at an indicated 60.
  • Jeep GladiatorMaker
    • 2026 · Willys; Sport with the Tire option LT255/75R17C; Willys with the Optional mud-terrain tires (same size as the standard tires); Rubicon with the Tire option LT255/75R17Cprinted LT255/75R17C, LT255/75R17
    • 2024–2025 · Willys; Willys with the Optional mud-terrain tires (same size as the standard tires)printed LT255/75R17

    Jeep Gladiator model years on 255/75R17:

    Its other stock sizes

    • 315/70R17 (2026 · Sport with the Tire option LT315/70R17C, with a package). 255/75R17 is 2.3 in shorter: with a speedometer set for 315/70R17 it reads 7.2% high, 56.0 mph at an indicated 60.
    • 285/70R17 (2024–2026 · Mojave, Rubicon; Mojave, Rubicon with the Optional mud-terrain tires (same size as the standard tires)). 255/75R17 is 0.6 in shorter: with a speedometer set for 285/70R17 it reads 2.0% high, 58.8 mph at an indicated 60.
    • 255/70R18 (2026 · Sport with the Tire option 255/70R18, with a package). 255/75R17 is the same height as 255/70R18, so a speedometer set for it reads true.
    • 245/75R17 (2024–2026 · Sport, Sport S). 255/75R17 is 0.6 in taller: with a speedometer set for 245/75R17 it reads 1.8% low, 61.1 mph at an indicated 60.
  • Jeep WranglerMaker
    • 2024–2025 · Rubicon with the LT255/75R17C tiresprinted LT255/75R17C
    • 2021–2023 · Willysprinted LT255/75R17C
    • 2016 · Sport with the S package (X S / Sport S)printed P255/75R17
    • 2014 · Rubicon; Sport with the S package (X S / Sport S)printed P255/75R17, LT255/75R17
    • 2013 · Rubiconprinted LT255/75R17
    • 2010–2012 · Rubicon; Sport with the S package (X S / Sport S)printed P255/75R17, LT255/75R17
    • 2009 · Rubicon; X with the S package (X S / Sport S)printed LT255/75R17, P255/75R17
    • 2008 · Rubiconprinted LT255/75R17
    • 2007 · Sahara; Rubiconprinted P255/75R17, LT255/75R17

    Jeep Wrangler model years on 255/75R17:

    Its other stock sizes

    • 315/70R17 (2021–2025 · Rubicon 392; Sport with the LT315/70R17C tires; Rubicon 2.0L turbo I-4 gasoline/3.6L Pentastar V6 gasoline with the LT315/70R17C tires or Xtreme 35 Package). 255/75R17 is 2.3 in shorter: with a speedometer set for 315/70R17 it reads 7.2% high, 56.0 mph at an indicated 60.
    • 285/75R17 (2024–2025 · Sport with the LT285/75R17C tires, with a package). 255/75R17 is 1.8 in shorter: with a speedometer set for 285/75R17 it reads 5.5% high, 56.9 mph at an indicated 60.
    • 285/70R17 (2021–2025 · Willys, Rubicon). 255/75R17 is 0.6 in shorter: with a speedometer set for 285/70R17 it reads 2.0% high, 58.8 mph at an indicated 60.
    • 255/70R18 (2008–2012, 2014, 2016 and 2021–2025 · Sahara 2.0L turbo I-4 gasoline; Sahara 2.0L turbo I-4 gasoline with the All-terrain tires (same size as the standard tires); Sahara 2.0L turbo I-4 4xe plug-in hybrid with the 255/70R18 tires). 255/75R17 is the same height as 255/70R18, so a speedometer set for it reads true.
    • 255/60R20 (2024–2025 · Sport S). 255/75R17 is the same height as 255/60R20, so a speedometer set for it reads true.
    • 275/55R20 (2021–2025 · Sahara 2.0L turbo I-4 4xe plug-in hybrid; High Altitude). 255/75R17 is 0.1 in taller: with a speedometer set for 275/55R20 it reads 0.5% low, 60.3 mph at an indicated 60.
    • 245/75R17 (2021–2025 · Sport; Sport with the 245/75R17 tires; Sport with the All-terrain tires (same size as the standard tires)). 255/75R17 is 0.6 in taller: with a speedometer set for 245/75R17 it reads 1.8% low, 61.1 mph at an indicated 60.
    • 245/75R16 (2007–2008 · Right-Hand Drive; X with the S package (X S / Sport S)). 255/75R17 is 1.6 in taller: with a speedometer set for 245/75R16 it reads 5.0% low, 63.1 mph at an indicated 60.
    • 225/75R16 (2007–2012, 2014 and 2016 · Sport). 255/75R17 is 2.8 in taller: with a speedometer set for 225/75R16 it reads 8.6% low, 65.7 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 255/75R17

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 255/75R17
SizeTallinHeightvs 255/75R17Widthvs 255/75R17At an indicated 60true mphCompare
275/70R1732.2+0.1 in+0.8 in60.259.3 to 61.1Compare →
285/70R1732.7+0.6 in+1.2 in61.260.3 to 62.1Compare →
285/75R1733.8+1.8 in+1.2 in63.362.4 to 64.3Compare →

Next sizes down

Next sizes down, compared with 255/75R17
SizeTallinHeightvs 255/75R17Widthvs 255/75R17At an indicated 60true mphCompare
265/70R1731.6−0.5 in+0.4 in59.258.3 to 60.0Compare →
245/75R1731.5−0.6 in−0.4 in58.958.0 to 59.8Compare →

About as tall, other wheels

About as tall, other wheels, compared with 255/75R17
SizeTallinHeightvs 255/75R17Widthvs 255/75R17At an indicated 60true mphCompare
255/70R1832.1±0.0 in±0.0 in60.059.1 to 60.9Compare →
255/65R1932.1±0.0 in±0.0 in60.059.1 to 60.9Compare →
255/60R2032.0±0.0 in±0.0 in60.059.1 to 60.9Compare →
275/65R1832.1±0.0 in+0.8 in60.059.1 to 60.9Compare →

04 / Next

Compare it with your size

Tire size calculator255/75R17 against 275/70R17, or any two sizes: height, speedometer and gearing.Compare sizesTire sizes by vehicleEvery stock size on the trucks and SUVs we cover.Browse sizesFord Bronco tiresStock tires and wheels by trim, and what bigger tires change on the Ford Bronco.See the tiresJeep Gladiator tiresStock tires and wheels by trim, and what bigger tires change on the Jeep Gladiator.See the tires

05 / FAQ

Questions people ask

What is 255/75R17 in inches?

About 32.1x10.0R17: 32.1 in tall and 10.0 in wide on a 17-inch wheel.

Which vehicles come with 255/75R17 tires?

In our data: Ford Bronco (2021–2026), Jeep Gladiator (2024–2026) and Jeep Wrangler (2007–2014, 2016 and 2021–2025).

How does 255/75R17 compare with the Jeep Wrangler’s other stock sizes?

255/75R17 is 2.3 in shorter: with a speedometer set for 315/70R17 it reads 7.2% high, 56.0 mph at an indicated 60. 255/75R17 is 1.8 in shorter: with a speedometer set for 285/75R17 it reads 5.5% high, 56.9 mph at an indicated 60. 255/75R17 is 0.6 in shorter: with a speedometer set for 285/70R17 it reads 2.0% high, 58.8 mph at an indicated 60.

What is the next size up from 255/75R17?

275/70R17: about 0.1 in taller and 0.8 in wider. On a speedometer set for 255/75R17 it reads 0.3% low (60.2 mph at an indicated 60).