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What is best tire pressure to use with Michelin Super Singles?

I have set my 455/55R22.5 X-One XDA Energy Drive tires cold at 120 psi and the wear seems to be even. I have heard of people using up to 130 psi and more, but also heard high pressures may blow wheels apart.

What pressure do you use and why?

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I have two trucks/trailers that are equipped with wide base singles, and they are checked biweekly and kept at 120 psi. One set of drives has 150k miles on them with 50% tread depth left! I highly recommend Tru Balance wheel centering studs and Centramatic balancers.

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I would agree, on tire/wheel balancing additions. I changed out my wide based drive tires last fall. They had 447,000 miles on them, 8-9/32 tread left, and I got $150 from the tire dealer for each of them. But as opposed to running 120 PSI, I ran about 95-100 PSI per the Michelin guide. I used the balancing beads in mine. No Tru-Balance centering.

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I live in MT and mainly run in/through WY, CO, OK and TX so about a 5000 or so elevation change from low to high extremes. I set my tires at 125 psi in Amarillo, TX (elevation 3600ft). The tire pressure should go up higher in MT (with elevation but is compensated by lower year round temps) and lower around Laredo, TX (with elevation drop but compensated by higher outside/road temps). That way it usually sits around 120-125 cold and 135 psi driving. Tires wear evenly and i'm not worried about blowing them. Under inflated singles blow...get it? :D

Alcoa rims are rated for 130psi cold iirc...i wouldn't go higher.

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According to Michelin, with the correct weight rated load, you can run 80 psi without under inflating. Under inflating problems happen when people are not monitoring psi vs the weights they are loading on them. Most of the time this stresses the side walls leading to zippering of the side walls.

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Did anyone think of using the Michelin pressure load tables for their tires?

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When I a ran Super Singles the only way I could get a even wear pattern was to run Michelin Pressure Load table anything else didn't work.

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the pressure table isn't optimized for fuel mileage and you'd have to readjust the tire pressure every time the load weight changed from light to heavy.

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Maybe not optimized for max fuel economy, but by sticking with tire pressure chart, I currently have 445,000 miles on my X Ones with 8-9/32 tread left and nice even wear. I am comfortable with lifetime mpg of 7.83. I generally run 95-98 PSI which is recommended for 34,000 lb on drives.

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Cliff is right on the money. The tire footprint is also a key to proper braking and preventing jackknifing. Please Google AIR CTI for more information.

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Super singles are to air pressure sensitive for my operation so I went back to dual configuration

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I currently run 112-116 max psi. on a grossed truck 32-34k

105-110psi on truck running 20-22k. Both of these are dual axle setups. Anymore than that it seems like the tread pattern (in the middle) wears out faster. Also lower air pressures makes for a better ride.

Here is michelin's website so you can see their recommendations

http://www.michelintruck.com/michelintru...

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There is a system that allows the driver to set the air pressure from the truck cab to comply with the load to inflation charts. The system also lets you know if you have a slow leak or had a tire blow out.

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