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Old 08-03-2009, 08:46 AM   #1
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Years to change tires?

It is recomended to change tires every 6 to 8 years on a mororhome;
if tires are no good after 6 to 8 years; do 18 wheelers change tires that often? Ive seen 18 wheel trailers that have tires that are much older than that; and have been recapped many times. these trucks are much heaver than a motorhome and usually travel much faster; If these tires are as unsafe as said; why isn't it required that 18 wheel trailers change tires after a certain period of years?

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Old 08-03-2009, 10:11 AM   #2
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Most over the road trucks and trailers change the tires before they get that old. Most have high enough mileage and have outlived their recapping life (can only be recapped so many times) prior to age becoming a problem.

They also do not sit like a MH does and it seems that sitting in one place and the constant exposure to the sun in one place is what gets those on a MH to bite the dust!


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Old 08-03-2009, 01:34 PM   #3
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Motorhome tires 'age-out' before they wear out. OTR trucks wear out the tread because of high miles then get the tires re-capped with new tread. It is my understanding that our RV tires do have compounds that can extend the life of the tire (and reduce UV damage to sidewalls) but those compounds are released by rolling and flexing. Since many motorhomes sit more than they move, sidewalls crack and the tire ages out well before we ever experience much treadwear.

I also understand that you can cut a deal with some dump truck haulers to buy your older RV tires (22.5's). It seems they will use them on their tag axles. I know I will try that when I need to replace my tires.
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