The GMT800 2500HD is a serious work truck. It needs tires that can handle load, towing, and occasional off-road use. Here are the best AT options.
What to Look for in All-Terrain Tires for a 2500HD:
- E-load (10-ply) rating – mandatory for payload capacity
- Good stability at highway speeds with heavy load
- M+S snow/ice traction
Top Picks:
#1: BFGoodrich All-Terrain T/A KO2 (Best All-Rounder)
BFGoodrich KO2 – LT265/65R18/E – The most popular AT tire for full-size trucks. Excellent towing stability, good off-road capability.
Common 2500HD fitments:
- LT245/75R17E, LT265/70R17E, LT285/70R17E
#2: Firestone Transforce AT
The highway/towing specialist. Best choice if you rarely go off-road and want maximum stability and quietness while pulling.
#3: Toyo Open Country AT3
Aggressive tread, great wet and snow performance, solid load ratings.
Tread Life:
AT tires on a 2500HD average 40,000–60,000 miles depending on use. Rotate every 7,500 miles.
Important: Load Rating Must Match Truck
The 2500HD requires LT-metric E-rated (10-ply) tires. Never run P-metric tires on a 3/4-ton or heavier truck.
What AT tires are you running on your GMT800 2500HD? Share your mileage and impressions!