2020 GMC GMC Sierra — 3500 HD 2wd Dually
The 2020 GMC GMC Sierra 3500 HD 2wd Dually came from the factory equipped with 235/80R17 tires. If your vehicle has since been fitted with aftermarket or upsized wheels, your actual tire size may no longer match this factory spec — always confirm against your door placard before buying.
235/80R17
| Section width | 235 mm |
|---|---|
| Aspect ratio (sidewall height) | 80% (188 mm) |
| Rim diameter | 17" |
| Overall tire diameter | ~31.8" |
| Revolutions per mile | ~634 |
- Check 235/80R17 price at TireRack
- Check 235/80R17 price at SimpleTire
- Check 235/80R17 price at Priority Tire
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Other 2020 GMC GMC Sierra trims
- 1500 2wd Crew Cab 255/70R17 / 265/70R17 / 265/65R18 / 275/60R20 / 275/50R22
- 1500 2wd Double Cab 255/70R17 / 265/70R17 / 265/65R18 / 275/60R20 / 275/50R22
- 1500 2wd Reguar Cab 255/70R17 / 265/70R17
- 1500 4wd Crew Cab 255/70R17 / 265/70R17 / 265/65R18 / 275/65R18 / 275/60R20 / 275/50R22
- 1500 4wd Double Cab 255/70R17 / 265/70R17 / 265/65R18 / 275/65R18 / 275/60R20 / 275/50R22
- 1500 4wd Reguar Cab 255/70R17 / 265/70R17
- 1500 Denali 275/60R20 / 275/50R22
- 2500 HD 2wd Crew Cab 245/75R17 / 265/70R17 / 275/70R18 / 275/65R20
- 2500 HD 2wd Double Cab 245/75R17 / 265/70R17 / 275/70R18 / 275/65R20
- 2500 HD 2wd Regular Cab 245/75R17 / 265/70R17 / 275/70R18 / 275/65R20
- 2500 HD 4wd Crew Cab 245/75R17 / 265/70R17 / 275/70R18 / 275/65R20
- 2500 HD 4wd Double Cab 245/75R17 / 265/70R17 / 275/70R18 / 275/65R20
- 2500 HD 4wd Regular Cab 245/75R17 / 265/70R17 / 275/70R18 / 275/65R20
- 3500 HD 2wd 275/70R18 / 275/65R20
- 3500 HD 4wd 275/70R18 / 275/65R20
- 3500 HD 4wd 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.