I am very uncomfortable with the idea that one size of tire has a lower rolling resistance than another. Is it the test standard to load a tire according to its load rating? Then, a larger tire is tested at a higher load.
In a buying decision, if tire size is considered, a larger diameter tire should be expected to provide better fuel economy for two reasons-- (1) it lowers engine RPM, and (2) for a given load, a larger diameter lowers Crr at least in theory.
Ernie Rogers
Quote:
Originally Posted by ESmooth
"$071 0.0062 Bridgestone/Firestone B381 P185/70R14: (another report said 0.00615)
I am listing only this tire for this size since its the absolute best LRR tire out of ANY SIZE and there is NO EXCUSE not to get it as it will save you more money over its lifetime than it would cost to even ship them over (if they are not available in your area)."
Hopefully this commentary is still true as I just ordered a set to replace my worn and now nail-damaged Kumho PowerStars.
Im averaging about 36MPG and am looking forward to seeing some improvements.
|