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Old 08-14-2022, 10:14 AM   #141
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Join Date: Sep 2016
Location: ALASKA (World's Biggest Campground)
Posts: 5,760
Never had a problem with auto/truck tires in terms of catastrophic failures. ST tire failure is an "enigma". I've yet to hear a definitive answer on why they fail. A lot of guesses, but nothing empirical. I've had ST tires that have aged out at 4-5 years, and have plenty of tread left with no signs of external or internal impending failure. I can put these tires on my 20ft ATV trailer and run them for another two years hauling snowmachines and ATV's without issue. I can only surmise that while on the RV they are stressed by heat cycles and weight. ???
'07 K3500 Silverado LT Crew Duramax (LBZ)
2016 Salem 27RKSS
1984 CHEV SCOTTSDALE K20 2GCGK24J0E1XXXXXX (Chevrolet Legends-Class of 2019)
"...exhaust fluid? We don't need no stinkin' exhaust fluid"
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Old 08-15-2022, 09:42 AM   #142
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Join Date: Jul 2013
Location: Akron, Ohio
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Originally Posted by Buddelje View Post
Dry Rot on Tires
I own a 2016 Coachman Freelander 20CB class C RV. This is a Ford Transit 350HD chassis. It appears I have dry rot on the rear dual axle tires and will replace them.
My question is, besides frequent use, how do you prevent dry rot on tires? Do covers work? I am told to store the unit with wooden boards under the wheels and drive it every month. Will this prevent dry rot? Also, I read about an aerosol spray sealant that if applied monthly will prevent dry rot.

Would appreciate your thoughts as this appears to be a common problem on seldom used RVs.


Jim B
Columbus Ohio

I have posted on my RVTireSafety blog, with actual data, on the advantages of tire covers. They can drop the tire temperature significantly when the rV is exposed to sunlight.
"Dry-Rot" is a misnomer as the actual problem is the rubber compound has the polymer bonds attacked at elevated temperature. This results in a loss of flexibility which leads to the surface cracking you see.
.Write a blog on RV tire application RV Tire Safety. 45 years experience as tire design & forensic engineer. Freelander 23QB on Chevy chassis is my RV. Giving seminars on RV Tire applications (not selling)@ FMCA Conventions. Next March 15-18 2023 Perry, GA
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Old 10-13-2022, 03:00 PM   #143
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Join Date: Jan 2021
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14” tire blowout

I just had a nasty blowout - let’s see if I can upload the picture - of a 14” factory tire on my Vibe 25RK. The tires are running near the maximum allowable load. I was doing just 60MPH on a pretty reasonable freeway surface and it wasn’t a hot day. I had glanced at my TPMS not too many minutes earlier and nothing was amiss. The TPMS alerted exactly at the moment we heard the bang. The event was reasonably controlled, damaging only the plastic wheel well trim, although the tire ended up looking like it was used for artillery target practice.

These were factory 14” load range D tires. I will gladly shell out the $1300 to upgrade to name-brand 15” tires and rims with load range E, if I can confirm adequate space exists in the wheel well. There is totally enough space while stationary but I suspect that with normal motion of the coach, larger tires would contact the enclosure. I may be stuck with just replacing the tires with a good brand while staying with 14”.

I thought I had set up a signature here but it looks like not.

Gerald Hawkins
King County, Washington State
Forest River Vibe 25RK, 2021 West Coast model
2020 Nissan Armada
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tire, tires

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