I Currently have 33 on 20's. It's time for new tires I'm going get toyo open country but don't know if to stick with 33 or go up to 35. Would it look better to go with 35 or keep the 33 to save on gas? Let me see som pic of 35 on 20's. What's the average mpg with 35.
Thanks

 

If your looking to save MPG stick with the 33's

 

Check out this thread to see my 20/35 combo...

https://www.f150forum.com/f4/pics-6-...yo-m-ts-87472/

I'm getting about 10 mpg city and anywhere from 12.5-15 highway...depends on how hilly the roads are. I live in WV so I typically see 12.5-13 highway, but when I traveled down south last summer, I got up to 15 on the highway. Those numbers are keeping the speedo around 70 though.

 

But is there a big difference in mileage lost between 33 and 35?

 

I can't speak to 33's becuase I have never run them. Also, you have to keep in mind what width they are, because you could have a wide 33 and a narrow 35 potentially getting the same mpg's...you have to factor in the overall weight of the rim/tire combo. But if you're comparing 33/35 with the same width, you should see slightly better numbers with the 33's. Someone else will probably chime in with some 33" numbers.

 

They both would be 12.5 wide

 

I have 33/12.50 on my truck and see about 13 in town now and about 15 to 17 on the freeway. The tires I think were like 70 lbs

 

My rim/tire combo is somewhere around 115-120 lbs.

 

i run 20's wrapped in 35 x 12.50's - and i do 95% driving in town (5% freeway)
and my truck reads: 15.7mpg average since i purchased truck in Jan 12':

 

35 toyos on 20 inch RBP next to stock setup