I have a '91 20' RoadRanger travel trailer that I purchased new. Here's some nameplate info: GVWR 7,120; GAWR 3,347 each axle; Gross Dry Wt. 3,635; Payload 3,485, Rims 15"x6", 5 holes. The tires have always been ST205/75R15, Load Range C (1,820#). Even after filling the 35 gal water tank, filling propane tanks, adding 2nd battery, adding canned goods, groceries, & clothing, and throwing in some wrenches I feel that I am still well under the rated loads. Remember, I had over 3,000 # payload to start with.
My problem is that in the past 2 years I have had 3 tires fail on me while I was driving down the highway. They were all Goodyear Marathons, 1 and 2 years old at the time, and had no more than 10,000 miles on them. One failure I discovered only after making a stop for gas. I saw smoke coming from under the trailer. The other two times I was waved at frantically by passing motorists. That sure gets your attention. Luckily I was able to quickly and safely pull off the road. All three times the tire was missing either all the tread or big chunks of it. What was left of the tires was hardly recognizable, they were more like smoking globs of rubber. Looked like they were ready to burst into flame. Each time we were very lucky, only a little damage was done to the trailer, there was no fire, and there were no accidents. What is really scarry is that until I had stopped, I had no idea there was a problem. I didn't notice any change in the handling of the truck/trailer.
After reading these messages, I am now thinking of maybe going to 16" rims and heavier rated tires. But then, I don't think I was even close to the rated tire capacity when I had the tire failures. By the way, to alleviate a clearance problem with the axle and holding tank I had the axles flipped, thus I think there is plenty of clearance to go to larger tire size. But, would going to bigger, higher rated tire reduce chances of another similar tire failure?
I've also thought about installing remote tire pressure sensors.
There are at least two companies that offer then, but they are pretty pricy, something like $500. They are supposed to alert you if pressure in one of the tires drops below a certain level. Then again, $500 is cheap if it prevents an accident.
I dunno. What do you think I should do?
Glenn Braden
San Diego