Tire specs
- Item #
- 2656518BKH1602523
2021 GMC Sierra 1500 AT4 — 265/65R18
2021 GMC Sierra 1500 AT4
- Factory size
- 265/65R18
- Load / speed
- 114T
4 tire results
Factory-size matches for your vehicleTire specs
- Warranty
- 55,000 miles
- Load index
- 114
- Speed rating
- T (118 mph)
- Tread depth
- 13.5/32"
- Item #
- 2656518KUM2283843
Tire specs
- Warranty
- 50,000 miles
- Load index
- 114
- Speed rating
- S (112 mph)
- Load range
- B
- Tread depth
- 13/32"
- Item #
- 2656518NEX12780NXK
Tire specs
- Warranty
- 65,000 miles
- Load index
- 114
- Speed rating
- T (118 mph)
- Load range
- Standard load (SL)
- Tread depth
- 13/32"
- Item #
- 2656518FAL28844823
What size tires does the 2021 GMC Sierra 1500 AT4 take?
The factory tire size for the 2021 GMC Sierra 1500 AT4 is 265/65R18.
The catalog lists it at load index 114, speed rating T (up to 118 mph).
This trim is also listed with LT275/65R18, 275/60R20, LT265/60R20. Check which one your vehicle has.
| Wheels | Size | Load index | Speed rating |
|---|---|---|---|
| All wheels | 265/65R18 | 114 | T |
| All wheels | LT275/65R18 | 113/110 | Q |
| All wheels | 275/60R20 | 115 | S |
| All wheels | LT265/60R20 | 110/107 | 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.