Anybody have experience with 4:56's or 4:88's and running 315's? I'd like to be similar to the stock tire size with the factory 4:11's. I think there are ratio calculators out there - 265's and 4:11's is the same as 315's and xxx ?? I still need to do 70 mph but want it to accelerate and crawl better than it does with the 4:11's. Thanks, Ben.