2014 GMC Sierra 3500 HD SLE Ext. Cab — LT245/75R17
2014 GMC Sierra 3500 HD SLE Ext. Cab
- Factory size
- LT245/75R17
- Load / speed
- 121/118R
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What size tires does the 2014 GMC Sierra 3500 HD SLE Ext. Cab take?
The factory tire size for the 2014 GMC Sierra 3500 HD SLE Ext. Cab is LT245/75R17.
The catalog lists it at load index 121/118, speed rating R (up to 106 mph).
This trim is also listed with LT265/70R17, LT265/70R18, LT265/60R20. Check which one your vehicle has.
| Wheels | Size | Load index | Speed rating |
|---|---|---|---|
| All wheels | LT245/75R17 | 121/118 | R |
| All wheels | LT265/70R17 | 121/118 | Q |
| All wheels | LT265/70R18 | 124/121 | S |
| All wheels | LT265/60R20 | 121/118 | 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.