|
Higher tire pressure -> lower MPG??
Just switch from Dunlop Enasaves A/S to General RT-43H, and looks like there is 5-10% MPG penalty. There are other factors in play, such as break in, lower ambient temperatures, stations switching to winter gas mix, etc, but subjectively car does not roll as well as it was on LRR Enasaves.
The only thing I found out of order is that RT43s were overinflated to 49psi. (This is 2000lbs car).
General wisdom of ecomodder says higher pressure = to better MPG, but the question I am contemplating, is there such thing as too much? RT43s are non-LRR tire, but they were designed with "Low surface abrasion technology (LSAŽ)" belts to reduce wear/friction. Would this also mean that at some point higher pressure will change the shape of the contact patch and increase the abrasion?
|