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Old 09-06-2008, 11:13 AM   #15
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Location: Rochester NY
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I think Michelin's recommendation on tire age is quite clear. I would not recommend anyone drive a motorhome at 55+mph and risk a tire blow out due to age and dry rot. The consequences could be catastrophic.

Somewhere between 6-10 years age on the tires (not to exceed) is a good recommendation.

For peace of mind, I'd recommend changing all 6 of your 9+ year old tires.

'07 Winnebago Journey 34H - CAT C7, Koni's, MCU's, SS Bell Crank, Safe-T-Plus
'07 HHR Toad, SMI AFO, Blue OX
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Old 10-19-2008, 01:42 AM   #16
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A few years ago, someone did an online poll to see when people had their first blow-out. In other words, the question was "how old were your tires when you had your first blow out?"
The answers varied considerably but it was clear that most blow outs occurred when the tires were greater than five years old.

Thus, it's another one of those cost-benefit deals. If you have the money and you are unprepared to deal with a blow-out, I'd get them replaced in the sixth year. If money is tight, start saving so that you can replace them in the seventh year. That's what I'll probably do. In any case, the best way to minimize the probability of a blow-out is to watch your RV's weight and keep the tires properly inflated. Nuff said.


2004 Winnebago Brave 34D with the usual add-ons
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Old 10-19-2008, 03:47 AM   #17
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I just replaced all 6 of our tires are right about the 5 year mark. I found checking around the sidewall on the passenger front (exactly where a zipper blowout would occur) and decided that it just wasn't worth the risk.

I did some calculations. Figuring a constant price increase per year that is consistent between this newest set of tires and the last time that I purchased tires, buying tires every 5 years versus every 7 years over a 21 year period comes out to $160 more per year for me. I view that cost as a small price today.

Here is the way that I look at it. We live in Texas. It is a known fact here that our batteries rarely get to 5 years old. The extremes of our temperatures make Texas the highest battery failure rate in the US. My belief is that our tires are similarly affected. While someone, some place else might easy get 7 years out of tires, we may not be able to achieve the same results.

I have kept our tires covered when not in use, never use anything but soap on them to clean them and am religious about maintaining proper tire pressure at all times. In addition, we typically drive the RV a lot more than many. While all of those should help extend our tire life, I'm satisfied that our we are living on borrowed time after 5 years.

If nothing else, the extra $160 a year gives me a little more piece of mind.

2000 Georgie Boy Landau 36' DP
2005 Saturn Vue toad
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