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 Post subject: Tires - avoiding a costly mistake
PostPosted: 16 Sep 2011 20:35 
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Joined: 08 Mar 2011 22:49
Posts: 1116
Location: Upper Fraser Valley
I've been advised by someone who had the most unfortunate experience to blow a tire on their Class C (after only a little more than an hour on the highway).
The tires weren't that old (5 yearish) and had oodles of tread. However, a little more than an hour into their trip one of the rear dualies blew - taking out a holding tank and doing other damage too.

They were a bit puzzled as to how this could have happened - they were careful about the weights and were not exceeding any weight ratings (but nevertheless were still heavily loaded). RV kept in shed while not in use.
Turns out that truck tires are rated on the assumption that they are only loaded 50% of the time. Of course, in an RV you are loaded 100% of the time.

So, it apparently can be a costly assumption to run your MH tires for the usual 6 or 7 years (or shudder - longer) that many people do.

I know that many have no issues, but for these people... once bitten, twice shy.



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Rob
1991 30' Sierra by Cobra (For sale - $3,500)
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 Post subject: Re: Tires - avoiding a costly mistake
PostPosted: 07 Nov 2011 12:06 
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Joined: 18 Oct 2011 12:54
Posts: 564
Location: Coquitlam, BC
There's several reasons for a tire blow out, but the most common reasons for an RV tire blow out are being over loaded, and low tire pressure.

I've gotten in the habit of checking all tire pressures TV and TT each morning before towing. Takes only a couple minutes for that peace of mind. My personal opinion is that I'd rather run a few pounds over inflated than under inflated.



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Mike
Me, DW, DD, & the dogs
2012 Surveyor SV-264
2008 5.4L F150 FX4 4x4 Crew Cab
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 Post subject: Re: Tires - avoiding a costly mistake
PostPosted: 06 Jan 2012 22:14 
Or uneven tire pressure on duallies. The tire with more pressure takes the majority of the weight.
Single tires it is easy to see a tire with low pressure, but dual rears can sometimes be hard to tell if just ONE tire is low...
I've had an inner rear tire blow apart at 70mph, it was pretty danged loud, and a great wakeup call!
;)


  
 
 Post subject: Re: Tires - avoiding a costly mistake
PostPosted: 01 Dec 2013 17:22 
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Joined: 27 Apr 2013 21:14
Posts: 52
I replaced ours at 5 years. The sidewall cracks were up to 3/16 inch deep, which I read was too risky. I am keeping the new ones covered and exercising them more often. Even in winter when the MH is not insured, I move it back and forth in the driveway every month. Stopped using tire polish after reading it shortens the lifetime.



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2004 Canadian Adventurer E350, 20 feet
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 Post subject: Re: Tires - avoiding a costly mistake
PostPosted: 29 Jun 2016 20:41 
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Joined: 17 Mar 2016 18:32
Posts: 13
We just replaced ours, they looked good but date code on front tires was 2002 and I couldn't see the back codes. I think they may have only been on a couple years, but I didn't want to push it. Besides we are going to the yukon in september and I was planning on replacing them before then, decided why wait. We are heading out to Monck park by Merritt, then Otter Lake and Manning Park next week. Didn't want to blow a tire now and wonder why I was waiting.

I went from 225/70 -16 to 235/85-16 (mhshipped with 215/85-16 stated as minimal size), fit is good. gained a couple inches and now the tires gvwr is higher than motorhomes. now speedo is out 4.4%, not too worried about it as I don't speed in this hotrod.



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