DeaneG wrote:Which Michelins did you go with? Please let us know what you find out - grip vs energy efficiency, quietness, etc.
Michelin Primacy MXV4 from Costco in the 91H version. I now have enough mileage on them and in both wet and dry conditions to make some observations:
Quieter. About 3db under like conditions compared to the EP422s.
Better wet and dry braking, dramatically so in fact.
Better steering turn-in and on-center feel.
Increased adhesion and much better handling, particularly near the limit.
Appear to be more robust construction and with a higher weight rating than the EP422s.
Tends to follow rain sipping on freeways somewhat more (tramlining).
They dramatically transform the driving character and fun quotient of the vehicle and are money well spent. I also feel more confident that these tires will not strand me. Admittedly, I am more sensitive to tires than some so others enthusiasm for the difference may vary... I am very happy with the upgrade.
I have not been able to detect any significant difference in efficiency due to the swap. My Miles/Khw is about 2-3 percent lower for the trips I regularly take - I typically average 4.4 long-term - compared to what it was before the change. I expect this to improve as the tires wear in since new tires are always less efficient. Interestingly, my efficiency actually seemed to go up slightly in the rain... Perhaps they channel water away better than the EP422s... They certainly handle and brake well in the wet.