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Tire size · 20-inch wheel · about 31.9x10.8R20

275/55R20 tire size

Overall diameter, nominal31.9 in

Estimate ±811 mm

A 275/55R20 tire is 31.9 in (811 mm) tall and 10.8 in (275 mm) wide on a 20-inch wheel, with a 6.0 in sidewall, and turns about 632 times a mile.

Stock on the Chevrolet Silverado 1500 (2007–2013 and 2015–2018), Jeep Wrangler (2021–2025), Ram 1500 (2019–2020, 2025 and 2027) and 2 more, per their makers’ documents.

Width
10.8 in
Sidewall
6.0 in
Wheel
20 in
Revs per mile
632

01 / Dimensions

275/55R20 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.

275/55R20

Estimate ±
Overall diameter
31.9 in 811 mm31.4 to 32.4 in for real tires
Section width
10.8 in 275 mm
Sidewall height
6.0 in 151 mm
Wheel diameter
20 in 508 mm
Circumference
100.2 in 2,546 mm
Revolutions per mile
632 393 per km623 to 642

02 / Stock on

Vehicles that leave the factory on 275/55R20

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 275/55R20 instead.

  • Chevrolet Silverado 1500Maker
    • 2015–2018 · High Countryprinted P275/55R20
    • 2013 · Trim not specified Short bed/Standard bed, XFE, Hybrid (1HY, 2HY) with the P275/55R20 tiresprinted P275/55R20
    • 2011–2012 · WT Short bed/Standard bed, LS, LT Short bed/Standard bed, LTZ Short bed/Standard bed, XFE, Hybrid (1HY, 2HY) with the P275/55R20 tiresprinted P275/55R20
    • 2010 · Trim not specified Short bed/Standard bed, XFE, Hybrid (1HY, 2HY) with the P275/55R20 tiresprinted P275/55R20
    • 2007–2009 · Trim not specified Short bed/Standard bed with the P275/55R20 tiresprinted P275/55R20

    Chevrolet Silverado 1500 model years on 275/55R20:

    Its other stock sizes

    • 265/70R17 (2007–2013 · Trim not specified, XFE, Hybrid (1HY, 2HY) with the P265/70R17 tires, with a package). 275/55R20 is 0.3 in taller: with a speedometer set for 265/70R17 it reads 1.0% low, 60.6 mph at an indicated 60.
    • 265/65R18 (2007–2013 · Trim not specified, XFE, Hybrid (1HY, 2HY) with the P265/65R18 tires, with a package). 275/55R20 is 0.3 in taller: with a speedometer set for 265/65R18 it reads 1.1% low, 60.7 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). 275/55R20 is 1.4 in taller: with a speedometer set for 245/70R17 it reads 4.4% low, 62.8 mph at an indicated 60.
  • Jeep WranglerMaker
    • 2025 · Sahara 2.0L turbo I-4 4xe plug-in hybrid; High Altitudeprinted 275/55R20
    • 2024 · Sahara 2.0L turbo I-4 4xe plug-in hybrid; High Altitude; Sport with the 275/55R20 tiresprinted 275/55R20
    • 2023 · Sahara 2.0L turbo I-4 4xe plug-in hybrid, High Altitude 2.0L turbo I-4 4xe plug-in hybrid; High Altitude 2.0L turbo I-4 gasolineprinted 275/55R20
    • 2022 · Sahara 2.0L turbo I-4 4xe plug-in hybrid; High Altitudeprinted 275/55R20
    • 2021 · High Altitude; Sahara 2.0L turbo I-4 4xe plug-in hybrid with the 275/55R20 tiresprinted 275/55R20

    Jeep Wrangler model years on 275/55R20:

    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). 275/55R20 is 2.5 in shorter: with a speedometer set for 315/70R17 it reads 7.7% high, 55.7 mph at an indicated 60.
    • 285/75R17 (2024–2025 · Sport with the LT285/75R17C tires, with a package). 275/55R20 is 1.9 in shorter: with a speedometer set for 285/75R17 it reads 6.0% high, 56.6 mph at an indicated 60.
    • 285/70R17 (2021–2025 · Willys, Rubicon). 275/55R20 is 0.8 in shorter: with a speedometer set for 285/70R17 it reads 2.5% high, 58.5 mph at an indicated 60.
    • 255/75R17 (2021–2025 · Rubicon with the LT255/75R17C tires). 275/55R20 is 0.1 in shorter: with a speedometer set for 255/75R17 it reads 0.5% high, 59.7 mph at an indicated 60.
    • 255/70R18 (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). 275/55R20 is 0.1 in shorter: with a speedometer set for 255/70R18 it reads 0.5% high, 59.7 mph at an indicated 60.
    • 255/60R20 (2024–2025 · Sport S). 275/55R20 is 0.1 in shorter: with a speedometer set for 255/60R20 it reads 0.4% high, 59.7 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)). 275/55R20 is 0.4 in taller: with a speedometer set for 245/75R17 it reads 1.4% low, 60.8 mph at an indicated 60.
  • Ram 1500Maker
    • 2027 · Tradesman, Limited; Big Horn / Lone Star, Laramie with the Tire option 275/55R20printed 275/55R20
    • 2025 · Tradesman, Limited with the Tire option 275/55R20printed 275/55R20
    • 2019–2020 · Tradesman with the Tire option 275/55R20printed 275/55R20

    Ram 1500 model years on 275/55R20:

    Its other stock sizes

    • 325/65R18 (2027 · RHO, TRX SRT). 275/55R20 is 2.7 in shorter: with a speedometer set for 325/65R18 it reads 8.5% high, 55.3 mph at an indicated 60.
    • 325/40R22 (2027 · Trim not specified with the Air suspension, with a package). 275/55R20 is 0.3 in shorter: with a speedometer set for 325/40R22 it reads 1.0% high, 59.4 mph at an indicated 60.
    • 285/45R22 (2027 · Trim not specified). 275/55R20 is 0.2 in shorter: with a speedometer set for 285/45R22 it reads 0.6% high, 59.6 mph at an indicated 60.
    • 275/65R18 (2019–2020, 2025 and 2027 · Tradesman, Big Horn / Lone Star with the Tire option 275/65R18, with a package). 275/55R20 is 0.2 in shorter: with a speedometer set for 275/65R18 it reads 0.5% high, 59.7 mph at an indicated 60.
    • 305/50R20 (2027 · Trim not specified with the Tire option 305/50R20 (late availability), with a package). 275/55R20 is 0.1 in shorter: with a speedometer set for 305/50R20 it reads 0.3% high, 59.8 mph at an indicated 60.
  • Toyota SequoiaMaker
    • 2021–2022 · Limited, Platinum, TRD Sport, Nightshadeprinted P275/55R20
    • 2019–2020 · Limited, Platinum; TRD Sportprinted P275/55R20
    • 2011–2017 · Limited, Platinumprinted P275/55R20

    Toyota Sequoia model years on 275/55R20:

    Its other stock sizes

    • 275/65R18 (2011–2017 and 2019–2022 · SR5, TRD Pro). 275/55R20 is 0.2 in shorter: with a speedometer set for 275/65R18 it reads 0.5% high, 59.7 mph at an indicated 60.
  • Toyota TundraMaker
    • 2018–2021 · Limited, Platinum, 1794 Editionprinted P275/55R20
    • 2016 · Limited, Platinum, 1794 Editionprinted P275/55R20
    • 2015 · Limited; Platinum, 1794 Editionprinted P275/55R20
    • 2014 · Limited; Platinum; 1794 Editionprinted P275/55R20
    • 2013 · Platinumprinted P275/55R20

    Toyota Tundra model years on 275/55R20:

    Its other stock sizes

    • 275/65R18 (2013, 2016 and 2019–2021 · TRD Pro). 275/55R20 is 0.2 in shorter: with a speedometer set for 275/65R18 it reads 0.5% high, 59.7 mph at an indicated 60.
    • 255/70R18 (2013–2016 and 2018–2021 · SR, SR5). 275/55R20 is 0.1 in shorter: with a speedometer set for 255/70R18 it reads 0.5% high, 59.7 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 275/55R20

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 275/55R20
SizeTallinHeightvs 275/55R20Widthvs 275/55R20At an indicated 60true mphCompare
305/50R2032.0+0.1 in+1.2 in60.259.3 to 61.1Compare →
255/60R2032.0+0.1 in−0.8 in60.359.4 to 61.2Compare →
265/60R2032.5+0.6 in−0.4 in61.160.2 to 62.1Compare →

Next sizes down

Next sizes down, compared with 275/55R20
SizeTallinHeightvs 275/55R20Widthvs 275/55R20At an indicated 60true mphCompare
245/60R2031.6−0.3 in−1.2 in59.458.5 to 60.3Compare →
265/55R2031.5−0.4 in−0.4 in59.258.3 to 60.1Compare →

About as tall, other wheels

About as tall, other wheels, compared with 275/55R20
SizeTallinHeightvs 275/55R20Widthvs 275/55R20At an indicated 60true mphCompare
225/70R19.531.9±0.0 in−2.0 in60.059.1 to 60.9Compare →
255/65R1932.1+0.1 in−0.8 in60.359.4 to 61.2Compare →
255/70R1832.1+0.1 in−0.8 in60.359.4 to 61.2Compare →
255/75R1732.1+0.1 in−0.8 in60.359.4 to 61.2Compare →

04 / Next

Compare it with your size

Tire size calculator275/55R20 against 305/50R20, or any two sizes: height, speedometer and gearing.Compare sizesTire sizes by vehicleEvery stock size on the trucks and SUVs we cover.Browse sizesChevrolet Silverado 1500 tiresStock tires and wheels by trim, and what bigger tires change on the Chevrolet Silverado 1500.See the tiresJeep Wrangler tiresStock tires and wheels by trim, and what bigger tires change on the Jeep Wrangler.See the tires

05 / FAQ

Questions people ask

What is 275/55R20 in inches?

About 31.9x10.8R20: 31.9 in tall and 10.8 in wide on a 20-inch wheel.

Which vehicles come with 275/55R20 tires?

In our data: Chevrolet Silverado 1500 (2007–2013 and 2015–2018), Jeep Wrangler (2021–2025), Ram 1500 (2019–2020, 2025 and 2027), Toyota Sequoia (2011–2017 and 2019–2022) and Toyota Tundra (2013–2016 and 2018–2021).

How does 275/55R20 compare with the Jeep Wrangler’s other stock sizes?

275/55R20 is 2.5 in shorter: with a speedometer set for 315/70R17 it reads 7.7% high, 55.7 mph at an indicated 60. 275/55R20 is 1.9 in shorter: with a speedometer set for 285/75R17 it reads 6.0% high, 56.6 mph at an indicated 60. 275/55R20 is 0.8 in shorter: with a speedometer set for 285/70R17 it reads 2.5% high, 58.5 mph at an indicated 60.

What is the next size up from 275/55R20?

305/50R20: about 0.1 in taller and 1.2 in wider. On a speedometer set for 275/55R20 it reads 0.3% low (60.2 mph at an indicated 60).