1971 Blazer 2wd tire setup
 

Men,
I am seeking advice on a tire/wheel combo. I currently have 15 x 8 rally wheels on the front 255/50/15 and 15 x 10 rally's on the rear295/50/15 My question is if I go with a taller, skinnier tire will it help my rpm's on the highway and will it help with the ride quality? Eventhough the wider tires look better.
thanks,