hamilton71801

If I switch from 265 E to 285 E will I lose much power when towing? I have stock rims. I know I might pick up some mpg's but I'm mainly concerned with get up and go. I have 3.55's and don't tow real heavy, maybe #11000 max. I'm looking for a beefier looking truck and figured this would be the cheapest since I'm ready for tires anyway. What about ride quality? Do the bigger tires ride rougher?

gunracer1

i have 285s on my dually, they are d range but have a weight capacity of well over 3k. they ride better than my load range "E"s. you should have enough torque that they will not hurt you towing.

1-2-3

Any time you change the outside dia. of your tires, obviously your making a diffrence. A bigger OD will increase economy, as the vehicle will actualy travel further with one rpm. You also change the final gear ratio. Bigger OD means a higher gear, which means less perceived power.

This site has a cool final drive ratio calculator plus some other cool stuff, like a calculator that tells you how much your speedo should be out by using bigger or smaller OD tires.

http://www.4lo.com/calc/geartire.htm