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Old 01-03-2015, 08:10 PM   #1
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Dual Wheel tire inflation

I am finding it difficult to maintain the tire pressures equal on my dual tires. Since I won't be towing this winter I lowered the pressure to about 50 psig but I don't really have them at the exact same pressure. I've been researching and found these:THE CROSSFIRE DUAL™ TIRE PRESSURE EQUALIZATION SYSTEM. unfortunately they only have 100, 105 and 110 psi indicators which really doesn't matter since I have pressure indicated in the truck. Any thoughts on maintaining duals at the same pressure? What about just getting valve stem hose extensions so that checking/adjusting is easier? What are others doing?
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Old 01-03-2015, 09:17 PM   #2
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You can also use the Cats Eye system. Your dealer should be able to adjust below that pressure setting. You need a metal stem for the installation and they are the best systems avaavaable for maintaining equal pressure.
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Old 01-03-2015, 10:01 PM   #3
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The inside duals are always a problem. I carry a 9in hose designed for a valve stem extension system. When I need to check the air pressure, I'm able to sneak my hand behind the tire and screw that on. Then I can inflate or deflate as is needed. I keep my duals set at 60psi I used to run them at 80psi but found the ride much better at 60 and that's whats on the door pillar.

The reason I don't leave those on all the time is because I've heard stories of them leaking and causing a problem. There is a company that sells extra long valve stems I saw advertised somewhere but they were a bit pricey.
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Old 01-03-2015, 10:41 PM   #4
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Yes...valve extensions have a terrible reputation for leaking, unlike the CrossFire or Cat's Eye, which do not leak. Most folks attribute the tight seal on the equilibrium pressure systems to the method by which they are fixed to the wheel.
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Old 01-04-2015, 12:14 AM   #5
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Originally Posted by spindrift View Post
Yes...valve extensions have a terrible reputation for leaking, unlike the CrossFire or Cat's Eye, which do not leak. Most folks attribute the tight seal on the equilibrium pressure systems to the method by which they are fixed to the wheel.

I've never heard of these....I'll have to research them. Thanks for the info
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Old 01-04-2015, 12:32 AM   #6
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You can't go wrong with the CrossFire. Around $75 per side.
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Old 01-04-2015, 04:04 AM   #7
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I had metal stems installed on my wheels then used 3" extensions on my inside tires. 5 years and never had a leak. I might have bought them at Camping World. Less than $10 IIRC. The TST system I got for the trailer came with 6 sensors. I now use the 2 extra on my inside duals. They are only about 2" but that's still ok. I've never had problems keeping my duals the same or within a pound of each other.
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Old 01-04-2015, 04:55 PM   #8
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I guess I didn't know it was that important to keep them equal.
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Old 01-04-2015, 07:24 PM   #9
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Have a tire shop put the longer metal valve stems on that they use on all the semi's. They don't leak and the inside tires are acsessible to add air to. If one of the duals have less air than the other it will wear out quicker as it is carrying more of the weight
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Old 01-04-2015, 08:16 PM   #10
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Ya I understand that, but 5 psi? Probably not. If it was that critical I would think the factory would have installed something.

Sometimes the less data feeding into me in the cab because of gadgets, the less I have to stress about
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