I'm always amazed at those who will not even take the time to search the same Internet they problably have access to 24/7. In just a few minutes I found:
Experts:
More About Larry Carley:
Tire Industry Association | Tire Industry Association
http://www.tirerack.com/tires/tirete....jsp?techid=72
Tips to controlling inflation pressure
As one says, do not go by the max pressure stampted on the side wall. The setting of tire pressure is not what it is there for. The auto manufacturer is the actual standard for tire pressure.
If one wishes to attempt up to 4 psi over, then they must decide on the risk factor. That is determined by a new set of tires run until they wear out, the cost of replacement, and then comparing that to the mileage rating and the experiece on the road during those months of use.
Goodyear states "Over inflation increases stiffness, which may deteriorate ride, and generate unwanted vibration. Over inflation also increases the chances of impact damage." There are a myriad of common sense considerations to make and it does not take a degree in rocket surgery to understand. My two years in auto mechanical training showed me certain simple facts, and I use those on a daily basis, and they have never let me down.
I know that just vibration alone is one of the single most damaging things to happen to an automobile.
The bottom line is to try and see. It is a free country. You can do as you like. But let us know the results after that 65,000 mile warranty runs out. Until then, it is all conjecture.