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Tire size · 19.5-inch wheel · about 31.9x8.9R19.5

225/70R19.5 tire size

Overall diameter, nominal31.9 in

Estimate ±810 mm

A 225/70R19.5 tire is 31.9 in (810 mm) tall and 8.9 in (225 mm) wide on a 19.5-inch wheel, with a 6.2 in sidewall, and turns about 632 times a mile.

Stock on the Ford Super Duty (2017–2024), per their makers’ documents.

Width
8.9 in
Sidewall
6.2 in
Wheel
19.5 in
Revs per mile
632

01 / Dimensions

225/70R19.5 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.

225/70R19.5

Estimate ±
Overall diameter
31.9 in 810 mm31.4 to 32.4 in for real tires
Section width
8.9 in 225 mm
Sidewall height
6.2 in 158 mm
Wheel diameter
19.5 in 495 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 225/70R19.5

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 225/70R19.5 instead.

  • Ford Super DutyMaker
    • 2024 · Series not specified Regular Cab/Crew Cab 8-ft box F-450printed 225/70R19.5
    • 2023 · Series not specified Crew Cab/Regular Cab 8-ft box F-450printed 225/70R19.5
    • 2019–2022 · Series not specified Regular Cab/Crew Cab 8-ft box F-450printed 225/70R19.5
    • 2017–2018 · Series not specified Crew Cab 8-ft box F-450printed 225/70R19.5

    Ford Super Duty model years on 225/70R19.5:

    Its other stock sizes

    • 285/75R18 (2020–2024 · Series not specified Crew Cab 6.75-ft box 4x4 with the Tremor Off-Road Package (17Y), with a package). 225/70R19.5 is 2.9 in shorter: with a speedometer set for 285/75R18 it reads 9.2% high, 55.0 mph at an indicated 60.
    • 275/70R18 (2017–2024 · Series not specified F-350 SRW with the 18-in/20-in all-terrain and 20-in all-season tires (F-350 SRW), with a package). 225/70R19.5 is 1.3 in shorter: with a speedometer set for 275/70R18 it reads 3.9% high, 57.7 mph at an indicated 60.
    • 275/65R18 (2017–2024 · Series not specified F-350 SRW with the 18-in wheels and tires (F-350 SRW), with a package). 225/70R19.5 is 0.2 in shorter: with a speedometer set for 275/65R18 it reads 0.5% high, 59.7 mph at an indicated 60.
    • 245/75R17 (2017–2024 · Series not specified F-250/F-350 SRW; Series not specified 8-ft box F-350 DRW). 225/70R19.5 is 0.4 in taller: with a speedometer set for 245/75R17 it reads 1.4% low, 60.8 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 225/70R19.5

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.

About as tall, other wheels

About as tall, other wheels, compared with 225/70R19.5
SizeTallinHeightvs 225/70R19.5Widthvs 225/70R19.5At an indicated 60true mphCompare
275/55R2031.9±0.0 in+2.0 in60.059.1 to 60.9Compare →
305/50R2032.0+0.1 in+3.1 in60.259.3 to 61.1Compare →
255/60R2032.0+0.1 in+1.2 in60.359.4 to 61.2Compare →
255/65R1932.1+0.1 in+1.2 in60.359.4 to 61.2Compare →

04 / Next

Compare it with your size

Tire size calculator225/70R19.5, or any two sizes: height, speedometer and gearing.Compare sizesTire sizes by vehicleEvery stock size on the trucks and SUVs we cover.Browse sizesFord Super Duty tiresStock tires and wheels by trim, and what bigger tires change on the Ford Super Duty.See the tires

05 / FAQ

Questions people ask

What is 225/70R19.5 in inches?

About 31.9x8.9R19.5: 31.9 in tall and 8.9 in wide on a 19.5-inch wheel.

Which vehicles come with 225/70R19.5 tires?

In our data: Ford Super Duty (2017–2024).

How does 225/70R19.5 compare with the Ford Super Duty’s other stock sizes?

225/70R19.5 is 2.9 in shorter: with a speedometer set for 285/75R18 it reads 9.2% high, 55.0 mph at an indicated 60. 225/70R19.5 is 1.3 in shorter: with a speedometer set for 275/70R18 it reads 3.9% high, 57.7 mph at an indicated 60. 225/70R19.5 is 0.2 in shorter: with a speedometer set for 275/65R18 it reads 0.5% high, 59.7 mph at an indicated 60.