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Tire size · 17-inch wheel

37x12.50R17 tire size

Overall diameter, nominal37.0 in

Estimate ±940 mm

A 37x12.50R17 tire is 37.0 in (940 mm) tall and 12.5 in (318 mm) wide on a 17-inch wheel, with a 10.0 in sidewall, and turns about 545 times a mile.

Stock on the Ford Bronco (2022–2026) and Ford F-150 (2021 and 2023–2026), per their makers’ documents.

Width
12.5 in
Sidewall
10.0 in
Wheel
17 in
Revs per mile
545

01 / Dimensions

37x12.50R17 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.

37x12.50R17

Estimate ±
Overall diameter
37.0 in 940 mm36.4 to 37.6 in for real tires
Section width
12.5 in 318 mm
Sidewall height
10.0 in 254 mm
Wheel diameter
17 in 432 mm
Circumference
116.2 in 2,952 mm
Revolutions per mile
545 339 per km537 to 553

02 / Stock on

Vehicles that leave the factory on 37x12.50R17

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 37x12.50R17 instead.

  • Ford BroncoMaker
    • 2022–2026 · Raptorprinted 37x12.5R17

    Ford Bronco model years on 37x12.50R17:

    Its other stock sizes

    • 315/70R17 (2022–2026 · Heritage Edition, Stroppe Edition; Base, Outer Banks, Badlands with the Sasquatch Package (765); Big Bend with the Black Diamond Package (51D) + Sasquatch Package (765)). 37x12.50R17 is 2.6 in taller: with a speedometer set for 315/70R17 it reads 7.1% low, 64.6 mph at an indicated 60.
    • 285/70R17 (2022–2026 · Badlands). 37x12.50R17 is 4.3 in taller: with a speedometer set for 285/70R17 it reads 11.6% low, 67.9 mph at an indicated 60.
    • 255/75R17 (2022–2026 · Big Bend). 37x12.50R17 is 4.9 in taller: with a speedometer set for 255/75R17 it reads 13.4% low, 69.2 mph at an indicated 60.
    • 255/70R18 (2022–2026 · Outer Banks). 37x12.50R17 is 4.9 in taller: with a speedometer set for 255/70R18 it reads 13.4% low, 69.3 mph at an indicated 60.
    • 265/70R17 (2022–2026 · 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)). 37x12.50R17 is 5.4 in taller: with a speedometer set for 265/70R17 it reads 14.6% low, 70.2 mph at an indicated 60.
    • 255/70R16 (2022–2023 and 2025–2026 · Base). 37x12.50R17 is 6.9 in taller: with a speedometer set for 255/70R16 it reads 18.8% low, 73.9 mph at an indicated 60.
  • Ford F-150Maker
    • 2026 · Raptor R; Raptor with the Raptor 37 Package (802A)printed 37x12.5R17
    • 2025 · Raptor Rprinted 37x12.5R17
    • 2024 · Raptor R; Raptor with the Raptor 37 Package (802A)printed 37x12.5R17LT
    • 2023 · Raptor R; Raptor with the Raptor 37 Package (802A)printed 37x12.50R17LT
    • 2021 · Raptor with the Raptor 37 Package (802A)printed 37x12.50R17LT

    Ford F-150 model years on 37x12.50R17:

    Its other stock sizes

    • 315/70R17 (2021 and 2023–2026 · Raptor). 37x12.50R17 is 2.6 in taller: with a speedometer set for 315/70R17 it reads 7.1% low, 64.6 mph at an indicated 60.
    • 275/70R18 (2021 and 2023–2026 · Tremor). 37x12.50R17 is 3.8 in taller: with a speedometer set for 275/70R18 it reads 10.4% low, 67.0 mph at an indicated 60.
    • 275/60R20 (2024–2026 · King Ranch 5.5-ft box 4x2; King Ranch 4x4; Platinum 5.5-ft box 4x2; Platinum 4x4). 37x12.50R17 is 4.0 in taller: with a speedometer set for 275/60R20 it reads 10.8% low, 67.3 mph at an indicated 60.
    • 275/65R18 (2024–2026 · STX 4x4; XLT 4x4, Lariat 4x4). 37x12.50R17 is 4.9 in taller: with a speedometer set for 275/65R18 it reads 13.3% low, 69.2 mph at an indicated 60.
    • 265/70R17 (2021 and 2023–2026 · XL 4x4). 37x12.50R17 is 5.4 in taller: with a speedometer set for 265/70R17 it reads 14.6% low, 70.2 mph at an indicated 60.
    • 265/60R18 (2024–2026 · STX 4x2; Lariat 5.5-ft box 4x2). 37x12.50R17 is 6.5 in taller: with a speedometer set for 265/60R18 it reads 17.5% low, 72.7 mph at an indicated 60.
    • 245/70R17 (2021 and 2023–2026 · XL 4x2; XLT 4x2). 37x12.50R17 is 6.5 in taller: with a speedometer set for 245/70R17 it reads 17.6% low, 72.8 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 37x12.50R17

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.

Next sizes down

Next sizes down, compared with 37x12.50R17
SizeTallinHeightvs 37x12.50R17Widthvs 37x12.50R17At an indicated 60true mphCompare
35x12.50R1735.0−2.0 in±0.0 in56.855.9 to 57.6Compare →
315/70R1734.4−2.6 in−0.1 in55.754.9 to 56.6Compare →

About as tall, other wheels

About as tall, other wheels, compared with 37x12.50R17
SizeTallinHeightvs 37x12.50R17Widthvs 37x12.50R17At an indicated 60true mphCompare
37x12.50R1837.0±0.0 in±0.0 in60.059.1 to 60.9Compare →
37x12.50R2037.0±0.0 in±0.0 in60.059.1 to 60.9Compare →

04 / Next

Compare it with your size

Tire size calculator37x12.50R17, 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 tiresFord F-150 tiresStock tires and wheels by trim, and what bigger tires change on the Ford F-150.See the tires

05 / FAQ

Questions people ask

What is 37x12.50R17 in millimeters?

940 mm tall and 318 mm wide on a 17-inch (432 mm) wheel.

Which vehicles come with 37x12.50R17 tires?

In our data: Ford Bronco (2022–2026) and Ford F-150 (2021 and 2023–2026).

How does 37x12.50R17 compare with the Ford F-150’s other stock sizes?

37x12.50R17 is 2.6 in taller: with a speedometer set for 315/70R17 it reads 7.1% low, 64.6 mph at an indicated 60. 37x12.50R17 is 3.8 in taller: with a speedometer set for 275/70R18 it reads 10.4% low, 67.0 mph at an indicated 60. 37x12.50R17 is 4.0 in taller: with a speedometer set for 275/60R20 it reads 10.8% low, 67.3 mph at an indicated 60.