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Old 06-07-2011, 11:14 AM   #21
47hook
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More info on this topic:

http://www.goodyear.com/rv/tirecare/...placement.html :

TIRE REPLACEMENT GUIDELINES
Goodyear does not state a "uniform" replacement age for RV tires because there are many conditions that dictate a tire's safe and effective life span. Some factors that influence how long a tire will last are:

Usage per year - more frequent usage will result in longer life
Vehicle storage practices (6 months loaded with little or no rotation is not good!)
Usage in warmer climates can also negatively impact a tire's overall life due to greater extreme ozone exposure
RVIA (Recreational Vehicle Industry Association) says, ”Statistics indicate that the average life of an RV tire is five to seven years.“

Couldn't find the reference again, but these tires are commercial trailer tires, also.

Like many others, the failures I have reported here were tread seperation, the carcas was just fine and still holding pressure.
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Old 06-08-2011, 03:18 PM   #22
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Thanks for the link on tire care....I have learned something new.

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Old 06-11-2011, 08:43 AM   #23
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My 17.5" GYs had two blowouts on this past Jan. They were just 6 yrs old by the DOT date on the tires. Always looked after, full press and covered when stored. So I think 6yrs way pushing the limits on age on RV tires. Especially when they sits so much.

I will stick to 4-5 yrs max from now on!

Bill
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Old 06-12-2011, 12:42 PM   #24
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Bill, you say you really looked after the tires well! One thing you didn't mention was "what speed you are driving at". With those big hauler trucks that "go fast", it should be pretty easy to exceed the stated max speed limit on the 17.5 inch trailer tires. It seems like the max on that tire is around 65 mph??

I have no knowledge of what exceeding max speed would actually do, but probably is not good, over the long term.

Just picking at you a little! I am sure you never go over 60 mph! lol lol
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Old 06-13-2011, 11:13 AM   #25
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After doing research on what tires to buy to replace my 17.5" tires the other year I did check into the speed ratings. The Michelins were rated for 62 MPH, the Goodyears were rated for 75 continuous. I don't know what the Coopers are rated for.

We cruise at 65 normally and have no issues with our rig. I am obsessive about the pressure before starting and always set it to max (125 psi) before starting out each travel day. I also check the sidewall temps and bearing hub temps at each stop during the day. The rig has also been weighed to make sure we are in spec for the load.
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Old 06-13-2011, 05:52 PM   #26
rdunk
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Just FYI, below is a link to Goodyear's specification page on the G114 17.5 inch H rated tire, for those of you who have this one on your Suites.

http://www.goodyear.com/cfmx/web/tru...bprodline=G114
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Old 06-14-2011, 03:06 PM   #27
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Motor31 - I have a harbor freight temp reader and also check my hubs and sidewalls temps. But do not have a clue what temps are normal, can you help me out??
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Old 06-15-2011, 10:51 AM   #28
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Ron,

I don't look for a specific temperature. Tires can heat up to rather high temps even without rolling an inch, just by exposure to the sun in the SW desert. What I look for is a tire that is noticably hotter than the others, indicating that it is losing air, or has lost air and the sidewall is flexing more causing it to heat up more than the others. Same for the hubs. As long as they are all just about the same everything is running normally.
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Old 06-16-2011, 09:02 PM   #29
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Quote:
Originally Posted by rdunk
Bill, you say you really looked after the tires well! One thing you didn't mention was "what speed you are driving at". With those big hauler trucks that "go fast", it should be pretty easy to exceed the stated max speed limit on the 17.5 inch trailer tires. It seems like the max on that tire is around 65 mph??

I have no knowledge of what exceeding max speed would actually do, but probably is not good, over the long term.

Just picking at you a little! I am sure you never go over 60 mph! lol lol
Well, we roll pretty slow actually..62 max. Most times under 60. Best fuel mileage at 60, sweet spot for RPM on our truck. I do monitor press with PP and shoot the tires, hubs etc on stops with a temp gun. GY rated to 75MPH. I run em at 125psi cold.

Bill
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