Rim size change

tower1 · 07-23-2008, 09:26 AM

My truck has 245/70/16 and I was wondering if I changed to a gm 17" rim with 265/75/17 would that give me better milage running down the road. befor you tell me i should go with a set of pro comp tires and rims you should know Im 50+ and I put about 50k miles on my truck a year.

gr8shot · 07-23-2008, 12:10 PM

Most people see the best mileage with stock size tires. 265's shouldn't have much of an effect, but they most likley will hurt rather than help your mileage. If you were to step up to 285's you would lose mileage for sure.

If your looking for better mileage, honestly get an entry level programmer. Almost all of them guarentee an improvement in mileage. That combined with a larger freer flowing exhaust (which will lower your exhaust temps if you tow) will get you the mileage improvements you want. Most likley at least 2 mpg. And as long as you don't add over 90 horsepower, your still completley safe, and will not risk ruining any part of your truck.

psyco66 · 07-23-2008, 12:15 PM

You MPG my drop a little. I am running 315/75/16 on my stock rims and I am getting 23MPG down the freeway. But I have a huge race tune in my truck. You truck will look way better with the new rims and tires.

Court · 07-23-2008, 12:27 PM

Pro comp wheels are a good wheel, and they're pretty cheap too in comparision to some of the wheels on the market. I just put a set of pro Comp wheels on my truck, and I love them.

gr8shot · 07-23-2008, 12:29 PM

Quote:

Originally Posted by Court

Pro comp wheels are a good wheel, and they're pretty cheap too in comparision to some of the wheels on the market. I just put a set of pro Comp wheels on my truck, and I love them.

hahahahaha ^^^^^

Quote:

Originally Posted by tower1

before you tell me i should go with a set of pro comp tires and rims you should know Im 50+ and I put about 50k miles on my truck a year.

**Tow Master** · 07-23-2008, 11:17 PM

Changing the rim size wont make ANY difference in the MPG's you'll get. The bigger tire could affect your mileage probably worsen it a little. I dont know why. You'd think that a bigger tire would get better mileage on the highway? But they dont.