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Old 09-23-2007, 07:21 AM   #11
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Part of my routine when I stop for any reason is to feel of the tires on the trailer and the tow vehical. I have not found any buildup of heat on my 14" tires. When I had a popup those tires were smaller. No heat problems either. I do keep the air at the max recommended pressures. I believe this is very important.
Dick
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Old 09-23-2007, 11:22 PM   #12
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I had problems on our 92 Aljo 5er at the time. it had goodyear martathons on it both rear tires blew, and it was a crazy ride for a short while.
before going on a trip also look very closely at the tires for wear and side bulges, if your in doubt on the side bulges, push on them with a finger ot thumb. if its soft or moves in easily, chances are it will blow sooner than later....
Im also reading on other forums like the trailerlife forum, that ANY tires on Rv's older than about 5 years old, (in good shape or not) should be replaced...

I have the same question as dimurrrw..... do larger tires run cooler? and if so, larger meaning a larger 15" tire with heavier load rating, E vs. D , or going to a 16" rim and tire?

any ideas??
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Old 09-25-2007, 08:39 PM   #13
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Here is a picture of the blown tire.


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Old 09-25-2007, 10:42 PM   #14
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We saw a optional item listed on The RV Wholesalers website called a tire pressure monitoring system at $150. Has anyone heard of this? Thoughts?
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Old 09-25-2007, 10:54 PM   #15
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I know someone here in my town that swears by them. He put an aftermarket one on his Cardinal. With my blow out, I had no idea it had happened until I was coming to a stop and heard the tire flapping. I might consider one since I will be replacing all of the tires and the system could be installed while the tires are being changed.
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Old 09-26-2007, 06:43 AM   #16
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I can not find an answer about larger tires running cooler but, if you put nitrogen in your tires, they will run 20% cooler.
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Old 09-26-2007, 07:17 AM   #17
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I can not find an answer about larger tires running cooler but, if you put nitrogen in your tires, they will run 20% cooler.

Show us some facts on this one. Regular air is what...about 78% nitrogen already. Yes, maybe high speed race car drivers will benefit from the maybe couple of degrees cooler temps., but not 20%!!

Paul B
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Old 09-26-2007, 07:32 AM   #18
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I haven't heard of running cooler but I have read that pure nitrogen doesn't bleed out as quickly as plain air. The O2 in plain air permeats (sp) the rubber of the tire quicker than the nitrogen. As air pressure in your tire decreases then the temp would increase. So maybe that's the selling point?

I just keep my tire pressure checked and use regular air. It's cheaper.
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Old 09-26-2007, 08:20 AM   #19
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Show us some facts on this one. Regular air is what...about 78% nitrogen already. Yes, maybe high speed race car drivers will benefit from the maybe couple of degrees cooler temps., but not 20%!!

Paul B
Actually Paul, the additional 22% makes a big difference. Nitrogen is used on all aircraft in the US specifically to reduce heat (Subsequently a blowout) during take off and landing. I will look for the article, but I remember it being a reduction of 20-35% of heat.
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Old 10-04-2007, 01:34 PM   #20
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When N2 is used as the inflation media, the change in rubber properties is significantly slowed down or even halted, because there is no Oxygen to oxidize belts or the rubber, which causes wear. As far as heat goes, what happens is that there is no related humidity in N2 as there is in normal air. The moisture assists heat build-up in ties, which add to inflation pressures. Most trailer tires that rupture are heat build-up related and overpressurization occuring. Dragging Brakes, and underinflation are big ciontributors to heat. You can reduce the amount of heat build significantly by using N2. Anyways, That's about it on that. Until we have N2 machines, I will just do the daily air pressure check and pre/post trip brake check.
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