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The Water Cooler
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Let's talk tires
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<blockquote data-quote="dennishoddy" data-source="post: 3640586" data-attributes="member: 5412"><p>I run Michelin 10 ply AT's pulling an unloaded 14,500 fifth wheel RV all over the country that weighs in at over 15,000 loaded at 70mph highway speeds for almost 6000 miles in two months this summer.</p><p>I won't debate what tire is best as everyone has had success with about every brand.</p><p>What I will debate is proper inflation of any tire. Mine, like most 10 ply say max pressure is 80 PSI. Our fifth wheel max pressure is 110 psi.</p><p>There are tons of folks that experience blowouts on either the truck or the trailers. We see reports all the time of blowouts causing thousands of dollars of damage. I believe it's because people don't know what happens to their tire pressure after being on the road.</p><p> Before leaving on our summer tour of the NW states this year, we bought a tire pressure monitor (TPM) for the fifth wheel tires that are filled with nitrogen. (supposedly, with the green caps) Our truck has built in TPM's.</p><p>Max TP on truck, 80 psi</p><p>Max TP on fifth wheel, 110 psi.</p><p>Before leaving I inflated the truck tires to 75 psi, and the fifth wheel to 100 psi.</p><p>Leaving in 90 degree temps at 70 mph, The fifth wheel pressures went up to 115-118 psi depending on which side was in the sun, exceeding the max pressure of 110 psi which makes them prime for a blowout. Pulled over, reduced pressure still hot to 105 psi on FW. </p><p>Truck pressure went up to 85-88 psi depending once again on which side was in the sun. Amazing how the sun makes a difference. </p><p>The rest of the trip we had no issues. Our TPM checked each trailer tire every 5 seconds for pressure loss, or total failure while giving us a readout of TP and tire temperature. Tire temps is how we found out how the sun has an effect on TP. All pressures shown on the vehicle monitor and the aftermarket monitor were verified by a manual tire gauge that I have confirmed accurate.</p><p>We did notice one axle, one tire consistently had higher pressures/temps, so I'm betting that will be the first tire to show wear. </p><p>So, the end of my long story is to get a TPM if your going to be pulling any type of trailer no matter how heavy and don't approach the max that the tire manufacturers post on their tires.</p></blockquote><p></p>
[QUOTE="dennishoddy, post: 3640586, member: 5412"] I run Michelin 10 ply AT's pulling an unloaded 14,500 fifth wheel RV all over the country that weighs in at over 15,000 loaded at 70mph highway speeds for almost 6000 miles in two months this summer. I won't debate what tire is best as everyone has had success with about every brand. What I will debate is proper inflation of any tire. Mine, like most 10 ply say max pressure is 80 PSI. Our fifth wheel max pressure is 110 psi. There are tons of folks that experience blowouts on either the truck or the trailers. We see reports all the time of blowouts causing thousands of dollars of damage. I believe it's because people don't know what happens to their tire pressure after being on the road. Before leaving on our summer tour of the NW states this year, we bought a tire pressure monitor (TPM) for the fifth wheel tires that are filled with nitrogen. (supposedly, with the green caps) Our truck has built in TPM's. Max TP on truck, 80 psi Max TP on fifth wheel, 110 psi. Before leaving I inflated the truck tires to 75 psi, and the fifth wheel to 100 psi. Leaving in 90 degree temps at 70 mph, The fifth wheel pressures went up to 115-118 psi depending on which side was in the sun, exceeding the max pressure of 110 psi which makes them prime for a blowout. Pulled over, reduced pressure still hot to 105 psi on FW. Truck pressure went up to 85-88 psi depending once again on which side was in the sun. Amazing how the sun makes a difference. The rest of the trip we had no issues. Our TPM checked each trailer tire every 5 seconds for pressure loss, or total failure while giving us a readout of TP and tire temperature. Tire temps is how we found out how the sun has an effect on TP. All pressures shown on the vehicle monitor and the aftermarket monitor were verified by a manual tire gauge that I have confirmed accurate. We did notice one axle, one tire consistently had higher pressures/temps, so I'm betting that will be the first tire to show wear. So, the end of my long story is to get a TPM if your going to be pulling any type of trailer no matter how heavy and don't approach the max that the tire manufacturers post on their tires. [/QUOTE]
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