Originally Posted by dwrestle
Supposedly the bigger tires will help your mileage on the highway and longer trips , but they hinder your off the line which also hinders fuel economy in stop and go and short trips, but I don't think there is any truth to that.
Bigger tires = Lower RPMs. I noticed my tank doesn't seem to empty out as fast on the freeway lately.
I'm running a 400 C6 4.10s and 35s and get about 8-9 street and 11-12 highway. The engine & tranny were rebuilt under 2000 miles ago, so that's also a deciding factor. IMO, if you're running one of thses big ol' bricks, you shouldn't bother stressing on MPG. No matter what you do, you won't get them up that high. Just enjoy the ride, and the fact that you're driving something you enjoy.
