4WD.ai

Tire size · 20-inch wheel · about 30.0x10.0R20

255/50R20 tire size

Overall diameter, nominal30.0 in

Estimate ±763 mm

A 255/50R20 tire is 30.0 in (763 mm) tall and 10.0 in (255 mm) wide on a 20-inch wheel, with a 5.0 in sidewall, and turns about 671 times a mile.

Stock on the Ford Explorer (2016–2018), Honda Pilot (2024 and 2026) and Volkswagen Amarok (2020–2021), per their makers’ documents.

Width
10.0 in
Sidewall
5.0 in
Wheel
20 in
Revs per mile
671

01 / Dimensions

255/50R20 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.

255/50R20

Estimate ±
Overall diameter
30.0 in 763 mm29.6 to 30.5 in for real tires
Section width
10.0 in 255 mm
Sidewall height
5.0 in 128 mm
Wheel diameter
20 in 508 mm
Circumference
94.4 in 2,397 mm
Revolutions per mile
671 417 per km661 to 682

02 / Stock on

Vehicles that leave the factory on 255/50R20

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 255/50R20 instead.

  • Ford ExplorerMaker
    • 2016–2018 · Sportprinted P255/50R20

    Ford Explorer model years on 255/50R20:

    Its other stock sizes

    • 245/60R18 (2017–2018 · XLT). 255/50R20 is 0.5 in taller: with a speedometer set for 245/60R18 it reads 1.5% low, 60.9 mph at an indicated 60.
    • 245/55R18 (2016–2018 · Police Interceptor Utility). 255/50R20 is 1.4 in taller: with a speedometer set for 245/55R18 it reads 4.8% low, 63.0 mph at an indicated 60.
  • Honda PilotMaker
    • 2026 · Sport, Touring, Touring Blackout, Elite, Black Editionprinted 255/50R20
    • 2024 · Sport, Touring, Eliteprinted 255/50R20

    Honda Pilot model years on 255/50R20:

    Its other stock sizes

    • 265/60R18 (2024 and 2026 · TrailSport). 255/50R20 is 0.5 in shorter: with a speedometer set for 265/60R18 it reads 1.6% high, 59.1 mph at an indicated 60.
    • 255/60R18 (2024 and 2026 · EX-L). 255/50R20 is the same height as 255/60R18, so a speedometer set for it reads true.
  • Volkswagen AmarokMaker
    • 2021 · Australia · Aventuraprinted 255/50R20
    • 2020 · Australia · Highline 580 Black; Ultimate V6 580; V6 580Sprinted 255/50R20

    Volkswagen Amarok model years on 255/50R20:

    Its other stock sizes

    • 275/50R20 (2021 · V6 W-Series). 255/50R20 is 0.8 in shorter: with a speedometer set for 275/50R20 it reads 2.6% high, 58.5 mph at an indicated 60.
    • 255/60R18 (2020–2021 · Sportline V6; Highline V6). 255/50R20 is the same height as 255/60R18, so a speedometer set for it reads true.
    • 245/65R17 (2020–2021 · Core V6). 255/50R20 is 0.5 in taller: with a speedometer set for 245/65R17 it reads 1.7% low, 61.0 mph at an indicated 60.
    • 245/70R16 (2020–2021 · Core). 255/50R20 is 0.5 in taller: with a speedometer set for 245/70R16 it reads 1.8% low, 61.1 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 255/50R20

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 255/50R20
SizeTallinHeightvs 255/50R20Widthvs 255/50R20At an indicated 60true mphCompare
235/55R2030.2+0.1 in−0.8 in60.359.4 to 61.2Compare →
275/50R2030.8+0.8 in+0.8 in61.660.6 to 62.5Compare →
255/55R2031.0+1.0 in±0.0 in62.061.1 to 62.9Compare →

Next sizes down

Next sizes down, compared with 255/50R20
SizeTallinHeightvs 255/50R20Widthvs 255/50R20At an indicated 60true mphCompare
245/50R2029.6−0.4 in−0.4 in59.258.3 to 60.1Compare →
265/45R2029.4−0.6 in+0.4 in58.757.8 to 59.6Compare →

About as tall, other wheels

About as tall, other wheels, compared with 255/50R20
SizeTallinHeightvs 255/50R20Widthvs 255/50R20At an indicated 60true mphCompare
255/55R1930.0±0.0 in±0.0 in60.059.1 to 60.9Compare →
255/60R1830.0±0.0 in±0.0 in60.059.1 to 60.9Compare →
255/65R1730.1±0.0 in±0.0 in60.059.1 to 60.9Compare →
235/65R1830.0±0.0 in−0.8 in60.059.1 to 60.9Compare →

04 / Next

Compare it with your size

Tire size calculator255/50R20 against 235/55R20, or any two sizes: height, speedometer and gearing.Compare sizesTire sizes by vehicleEvery stock size on the trucks and SUVs we cover.Browse sizesFord Explorer tiresStock tires and wheels by trim, and what bigger tires change on the Ford Explorer.See the tiresHonda Pilot tiresStock tires and wheels by trim, and what bigger tires change on the Honda Pilot.See the tires

05 / FAQ

Questions people ask

What is 255/50R20 in inches?

About 30.0x10.0R20: 30.0 in tall and 10.0 in wide on a 20-inch wheel.

Which vehicles come with 255/50R20 tires?

In our data: Ford Explorer (2016–2018), Honda Pilot (2024 and 2026) and Volkswagen Amarok (2020–2021).

How does 255/50R20 compare with the Volkswagen Amarok’s other stock sizes?

255/50R20 is 0.8 in shorter: with a speedometer set for 275/50R20 it reads 2.6% high, 58.5 mph at an indicated 60. 255/50R20 is the same height as 255/60R18, so a speedometer set for it reads true. 255/50R20 is 0.5 in taller: with a speedometer set for 245/65R17 it reads 1.7% low, 61.0 mph at an indicated 60.

What is the next size up from 255/50R20?

235/55R20: about 0.1 in taller and 0.8 in narrower. On a speedometer set for 255/50R20 it reads 0.5% low (60.3 mph at an indicated 60).