2021 Chevrolet Silverado — 1500 WT
The 2021 Chevrolet Silverado 1500 WT shipped with 3 different factory tire sizes, depending on the wheel package it left the factory with (this can also reflect a staggered front/rear setup). Check your tire sidewall or door placard to confirm which one applies to your vehicle.
This trim shipped with more than one tire size (staggered fitment, front/rear, or optional wheel package). Confirm which one matches your vehicle by checking your tire sidewall or door placard.
255/70R17
| Section width | 255 mm |
|---|---|
| Aspect ratio (sidewall height) | 70% (178.5 mm) |
| Rim diameter | 17" |
| Overall tire diameter | ~31.1" |
| Revolutions per mile | ~649 |
- Check 255/70R17 price at TireRack
- Check 255/70R17 price at SimpleTire
- Check 255/70R17 price at Priority Tire
Some links on this page are affiliate links — see our disclosure.
265/70R17
| Section width | 265 mm |
|---|---|
| Aspect ratio (sidewall height) | 70% (185.5 mm) |
| Rim diameter | 17" |
| Overall tire diameter | ~31.6" |
| Revolutions per mile | ~638 |
- Check 265/70R17 price at TireRack
- Check 265/70R17 price at SimpleTire
- Check 265/70R17 price at Priority Tire
Some links on this page are affiliate links — see our disclosure.
275/65R18
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 65% (178.8 mm) |
| Rim diameter | 18" |
| Overall tire diameter | ~32.1" |
| Revolutions per mile | ~629 |
- Check 275/65R18 price at TireRack
- Check 275/65R18 price at SimpleTire
- Check 275/65R18 price at Priority Tire
Some links on this page are affiliate links — see our disclosure.
Other 2021 Chevrolet Silverado trims
- 1500 Custom 275/60R20 / 275/50R22
- 1500 Custom Trail Boss 275/65R18 / 275/60R20
- 1500 High Country 275/60R20 / 275/50R22
- 1500 LT 255/70R17 / 265/70R17 / 265/65R18 / 275/65R18 / 275/60R20 / 275/50R22
- 1500 LT Trail Boss 275/65R18 / 265/60R20 / 275/60R20
- 1500 LTZ 265/65R18 / 275/60R20 / 275/50R22
- 1500 RST 265/65R18 / 275/60R20 / 275/50R22
- 2500 HD Custom 275/65R20
- 2500 HD High Country 275/65R20
- 2500 HD LT 245/75R17 / 265/70R17 / 275/70R18 / 275/65R20
- 2500 HD LTZ 275/70R18 / 275/65R20
- 2500 HD WT 245/75R17 / 265/70R17 / 275/70R18
- 3500 HD 275/70R18 / 275/65R20
- 3500 HD Dually 235/80R17
How to read a tire size
A tire size like 225/45R17 breaks down into three parts:
the first number is the section width in millimeters
(the tire's width from sidewall to sidewall), the second is the
aspect ratio — the sidewall's height as a percentage of
that width — and the number after the "R" is the rim
diameter in inches. A letter prefix (P or LT) indicates
Passenger or Light Truck construction; its absence usually means
Euro-metric sizing.
Some trucks and off-road tires instead use "flotation" sizing, like
37X12.50R17 — here the numbers are the tire's overall
diameter and width in inches directly, with the rim diameter last.
Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.