Tire size and MPG

DEN

turtle jumping coach
Joined
Apr 24, 2006
Messages
188
Wanting to get rid of the stockers and get some bfg ATs but I am currently getting great mileage with my 4th gen. I am only wanting to go 285 biggest so between 285and 275 how much will each hurt mileage? I think I dropped about 1mpg when I went to a 305 on a SD years back. Going to stay on stock rims as well. So what do you guys think?
 
I think worrying about mileage is stupid.

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