2026 GMC Sierra 1500 SLE — 255/70R17
2026 GMC Sierra 1500 SLE
- Factory size
- 255/70R17
- Load / speed
- 112S
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Factory-size matches for your vehicleNo tires are priced for this selected size and service class.
Choose yours for its prices, shelf stock and open times.
What size tires does the 2026 GMC Sierra 1500 SLE take?
The factory tire size for the 2026 GMC Sierra 1500 SLE is 255/70R17.
The catalog lists it at load index 112, speed rating S (up to 112 mph).
This trim is also listed with 265/70R17, 265/65R18, 275/60R20. Check which one your vehicle has.
| Wheels | Size | Load index | Speed rating |
|---|---|---|---|
| All wheels | 255/70R17 | 112 | S |
| All wheels | 265/70R17 | 115 | S |
| All wheels | 265/65R18 | 114 | T |
| All wheels | 275/60R20 | 115 | S |
Confirm the size printed on the sidewall of your current tire or on the tire placard in the driver's door jamb before you buy. Replacement tires should meet or exceed the vehicle's load index and speed rating.