Tire specs
- Load index
- 126
- Speed rating
- R (106 mph)
- Load range
- E (10-ply)
- Tread depth
- 14/32"
- Item #
- 3057018GOO796289833
2024 GMC Sierra 3500 HD AT4X — LT305/70R18
2024 GMC Sierra 3500 HD AT4X
- Factory size
- LT305/70R18
- Load / speed
- 126/123R
2 tire results
Factory-size matches for your vehicleTire specs
- Warranty
- 50,000 miles
- Load index
- 126/123
- Speed rating
- Q (99 mph)
- Load range
- E (10-ply)
- Tread depth
- 19/32"
- Item #
- 3057018MTP331039001
What size tires does the 2024 GMC Sierra 3500 HD AT4X take?
The factory tire size for the 2024 GMC Sierra 3500 HD AT4X is LT305/70R18.
The catalog lists it at load index 126/123, speed rating R (up to 106 mph).
| Wheels | Size | Load index | Speed rating |
|---|---|---|---|
| All wheels | LT305/70R18 | 126/123 | R |
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.