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Trailer Tires Overheating.
Joe Here wrote in message . ..
This past Summer, took our 15 foot fiberglass on a long road trip instead in the usual half mile to the marina. The tires are the small 4.80-8 utiltiy type tires, and needless to say, they overheated badly..... long story, but I'll be upgrading to a biger tire this Summer. Here's my question. It seemed that the speed at which the load was being carried created the heat. While pondering the trip home (semi desperate and after a few beers) I considered filling the tires with water (say 50%) in an attempt to dissipate the heat to the rims. I never did this, but have pondered the the effects of water in a tire at speed. Would the balance go for a bundle or would the water be thrown evenly within the tire by the certifugal force? I made the trip home by upping the pressure to 60 p.s.i. and by driving slower. Would water have helped of would I have been courting a disaster? No, water would have just added to the mass. I have a boat with 8" tires. I had 4.80-8's on it, told the guy at the tire shop that I thought they got too hot, he put on 5.70-8's on, problem solved. You can use the same wheels. They stay MUCH cooler. If you look, after mounting one and blowing it up, and compare it to the 4.80, you'll see a difference in heighth as well as width. It doesn't make as many turns per mile as the smaller tire! The load range is greater, the recommended tire pressure greater, and the contact patch greater. Trust me, been there, done that. |
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