[STdan]

For those running larger then stock tires, what are your real world MPGs?

I'm running 275/70/18s and currently getting about 16mpg in town 20mpg on the highway.

 

[Kc311]

It will get slightly worse from where you are now. I run 305/55/20 Nitto Trail Grapplers and get 16-18 mixed but more highway. At 70-75 mph, I get about 17.5 mpg. At 65, I get 18+

strictly city driving, I'd probably get 13-15

 

[Nasty Wendy]

I see several posts stating that bigger tires kill fuel economy. That must be geared more toward Mud/Off road tires than what I am running. My truck has 305/40/r22s so I'm wider and run a bigger wheel than stock but my fuel economy hasn't suffered. I think most folks here equate bigger tires with Off-Road tires which are gonna hit your fuel economy on any truck.

 

[5280ecoboost]

Im running 275/70-18 goodyear duratracs and get 14.6

 

[bigdaddymac]

35" muds on 20s. 14.5mpg is my best. I typically have my foot in it tho so usually a bit less

 

[Hunter73]

I have a front level kit with 33/12.5/20's. my avg overall is 13.9. I don't care about trying to drive to get better. I just drive to have fun.