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Old 06-02-2013, 09:17 AM   #1
Join Date: Feb 2012
Location: New Hill, NC
Posts: 51
Sunseeker 3170DS (class C) tires

We're on our 6k mile trip and after 600 miles the rear inner tire on the passenger side shredded. As we're fairly new to this gig, we didn't realize it at first (until the rubber smell). Luckily a rest area appeared and we stopped there. Coachnet came around midnight and put on the spare, we spent the night and are off again. It's a Sunday in MS and actual tire stores are not open.
We are a family of 6 and towing the infamous Odyssey.
Our concerns are: given the 3170 limited CCC should we be looking at replacing 4 rear LTX M/S 22575 R16 tires with tires that can hold more weight? (we have to replace the spare tomorrow)
We are aware that we will always be at max weight as a family traveling.

We will weigh as soon as we come upon another weigh station but have not done it on this trip.
We will install TPMS at the end of this week.

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Old 06-03-2013, 05:09 PM   #2
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Join Date: Nov 2009
Location: Angeles National Forest, LA Calif.
Posts: 1,098
Very important to watch air pressure as well as weight. You didn't mention how old the tires are or how many miles on them. Sounds to me like you may have had a low tire.

Mark & Carole RVM54
What a long strange trip it's been
2002 Fourwinds 5000 26Q 496 ci. Chevy towing 2004 Jeep Wrangler,2016 Starcraft AR One 18', 2016 F-150
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Old 06-05-2013, 04:24 PM   #3
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Hard to say based on the very limited info you gave - didn't even mention make & model of RV! Was the tire low on air? Is the rear axle overloaded?

You need to learn the numbers and do some arithmetic. First, the axle load ratings (GAWR). Then the actual weights carried on those axles (drive to a scale with everybody onboard and see what it really weighs, axle by axle). If the axle is already at its max capacity, buying a larger tire capacity is just kidding yourself - you need to lose weight instead!

Each rear tire carries about 1/4 the rear axle weight, but you have to allow a bit extra because the load is rarely even across all 4. Tires of the size you mentioned are available in at least three different load ranges (weight capacities), anywhere from around 1770 per tire to 2470 per tire (duals). Stepping up to a higher load range would be wise if you aren't at the top already. Load ranges for that size are C, D, and E (largest).
Gary Brinck
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL
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