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I'm finding the tires do seem to last a bit longer due to less sidewall flex generating heat. This is at the cost of a more uncomfortable ride. As believe I stated before in the earlier pages of this thread the suspension will take more wear from the lessened effect of the tires absorbing impact from irregularities in the road. In my eyes since newer cars now the suspension system is built cheap. I will need to replace parts with aftermarket sooner or later and might as well be sooner since they build suspensions with plastic in them now. I will be going with Moog probably for some non plastic end links here within the next 30k and probably some Bilstien shocks all around (if bank account agrees). Reduce sway and economy increases when your suspension keeps tires in contact with road better. Needless to say a lifetime warranty shock from a reputable company is built to handle absorbing all road irregularities and riding at sidewall or 10% higher won't be any issue. Increased pressure has extended life on many peoples tires as I have seen from countless threads but if your on rough roads with a worn suspension your probably better off lowering pressure a bit 10-15% below sidewall max always has seemed to be the most comfortable and performance worthy to me. Most of my cars have been between 32-35 recommend max psi with either 44 or 51 psi max sidewall. So more or less 38-40 psi for 44 max and 42-45 psi for 50 psi is were I have found the best.
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