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I ran metzlers and the rear said 51. Go by whats on the tire sidewall. The guy at Michelen is full of ****. The HD manual is for their oem std Dunlop tires. ALWAYS FOLLOW THE TIRE CASING NUMBERS!
youre right it is max psi which is to be followed if you are going to be at GVWR. I guess I should have been more clear but say a Dunlop says 41 and a Metzler says 51. If you ran 36, you would only be 5 psi under on a Dunlop which is acceptable, but on a Metzler you would be a dangerous 15 psi below their recommended limit, especially with 2 up. This would create more heat and casing fluction which will increase the chance of catastrophic tire failure.
I have dealt with different tire and wheel manufacturers and involved in law suits, and it came down to did you or did you not follow the stated tire psi on the tire?
IMHO I think Dunlop is a harder rubber which will give you longevity, Metzler is a softer compound which rides much nicer, but doesn't have the longer life as the Dlop, and Avon is even a softer rubber and from what Ive heard has superior sticking ability and is a great ride, but has the least life of the 3 tires mentioned.
I want to look at the Pirellis, Michelens possibly for the next go around, but I need to do more research before I change from Metzler.
I run 40/38 and I have 6000 miles, so far, very little wear.
Better ride, better traction, better handling than Dunlops, Metzlers, or Continentals (these are the only brands I've tried).
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