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couple of thoughts:
I have run Kuhmos 255/45/18 Exsta asx on my Infiniti Q45 since 58,000 miles. I now have 195,000. I have never had a problem caused by a poor quality tire. They balance perfectly and I rotate every 5k. I get 40k+ a set. They are also quite.
I think that for true (I don't give a crap about anything but that last 1/10 of a gallon) hypermiling you can pump it up to 90psi.....who cares...the car will drive like and ride like crap. Frankly for real world around town driving 39-44 is just as good. At somepoint your are driving with bricks for tires and the wear on the suspension parts just can't justify the very little gain in mpg. Now if your asbout to hit the highway for the next 4-10 hours.....higher psi might be justified.
But hey, don't mind me......... I was told by someone on this furom that ecomodding a Q45 made me an 'obvious Ugly American' and I should do my part and buy a pos micro,sub-mini-compact w/ no a/c and get rid of the Q.
yeah.....right.......
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