bloc
SILVER Star
I didn’t see that part.I’m running 275/60/r20 bfg’s on stock rims. At 75mph, my dash is saying 16mpg. At 80mph, it drops to 15mpg. No way in hell could you run 85 mph in this rig and get 20mpg. I think it’s physically not possible when stock.
I have a long history of noticeably better mileage at altitude than down near sea level where I live, but 20mpg at 85-90 is pretty far out there.