OPEN COUNTRY A/TIII
LT265/60R20 121S E
In stock locally
Installed next business day
Original-equipment tire sizes for the 2012 GMC Sierra 3500 HD from the factory fitment data, and the tires we can supply below. Prices are quoted all-in — tire, installation, balancing and taxes.
| Trim | Tire size (OE) | |
|---|---|---|
| Denali | 265/60R20 | Shop 265/60R20 |
| 265/70R18 | Shop 265/70R18 | |
| 265/70R18 | Shop 265/70R18 | |
| Denali (DRW) | 235/80R17 | Shop 235/80R17 |
| SLE | 265/70R18 | Shop 265/70R18 |
| 265/70R18 | Shop 265/70R18 | |
| SLE (DRW) | 235/80R17 | Shop 235/80R17 |
| SLT | 265/70R18 | Shop 265/70R18 |
| 265/70R18 | Shop 265/70R18 | |
| SLT (DRW) | 235/80R17 | Shop 235/80R17 |
| WT | 265/70R18 | Shop 265/70R18 |
| 265/70R18 | Shop 265/70R18 | |
| WT (DRW) | 235/80R17 | Shop 235/80R17 |
These are the original-equipment fitments for this model. Optional wheel packages can differ — the door-jamb placard is final. Not sure? Text us a photo and we will confirm the size.