Michelin commander II tires pressures on WG
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Joined: Apr 2008
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From: Sandpoint, Idaho
I sure would like to know where you are finding what the tire manufacturer recommends. That MAXIMUM pressure printed on the tire is only for MAXIMUM load.
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Joined: May 2010
Posts: 59
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From: Pleasant View, TN
That's a dangerous approach. The tire manufacturer has no idea if a particular tire is going on a 800 lb Harley, or a 500 lb Yamaha. Car and bike manufacturers are the best judge for tire inflation due to the construction of the tire they are using, their vehicle's weight, and the suspension system they design into the vehicle. An example would be buying new tires for your pick-up truck. Some tires, due to construction and load ratings (and their intended use) have max pressures up between 60 and 80 psi. Light duty vehicles and passenger cars aren't designed for those air pressures making for dangerous handling characteristics. Same with bikes. Proceed with caution.
Excellent explanation, and TRUE.
The 21 inch tires all run 30 psi. The other front sizes run 40 psi. Put 40 psi in a 21" and you might as well run a solid wheel barrel tire.
Ron (retired - was a HD design engineer some years ago)
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