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Old 04-04-2013, 10:19 PM   #1
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Tires

I have a 2012 Jayco Eagle Super Lite 30.5bhlt fifth wheel that has the goodyear marathons. I personally hate the tire. I have had one blow out luckily with no damage to the trailer, and the others have those small indentations in them, which I am not sure what that is a sign of, and it seems that they don't hold air that well. Not to say that they are going flat between trips but I have to add between trips and in the summer it is every week. During the summer because we live on Long Island we use it on the outter beach which requires us to air down each time to get through the sand. The tires are a range D and have about 4200 miles on them with the recent trip to Florida. Does anybody have a tire that they love or that have performed well for them? My max load capacity is like 12,500 pounds which isn't much. Should I go up to an E rating, not really sure what the difference would be? We have young kids and including the short trips to the beach we probably take about 16 trips a year with it. Can I go to a 16 inch rim? It has the morride suspension system in it which does make it bounce around a lot when you hit dips and bumps. Anybody with some good advice or with some suggestions it would be appreciated.

Thanks in Advance!
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Old 04-07-2013, 06:17 PM   #2
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Old 04-07-2013, 08:20 PM   #3
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We have a 5er that weighs in at around 11,000, and we have Maxxis load range E on 16 inch aluminum rims. The main difference between D and E is the sidewall ply and the running pressure (80psi for range E). This also gives you increased load capacity per tire. Our unit had GY marathons on it when we bought it, and one tire blew out over the winter just sitting there. Another was bulging and ready to blow when spring arrived, still just sitting there. Many folks have had very good experience with Maxxis, so that is what we replaced with, and have had no complaints whatsoever with them so far. BTW, the increased pressure with E range will stiffen your sidewalls somewhat, which should help with the bouncing. Hope this helps.
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Old 04-08-2013, 07:27 AM   #4
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IF I read your post correctly those small indentations on the tires are cupping.. and indicate an alignment problem... Tires normally loose 1-2 lbs of pressure a month.. if yours are loosing more then first remove the valve stems and reseat them if that does not work then take the tires into a tire shop they can put the tires in a water bath and see where the leaks are...
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Old 04-08-2013, 08:03 PM   #5
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What tire air pressure do you run in your GY Marathons load range D?

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Old 04-09-2013, 07:50 AM   #6
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My rig is 2 years old and I just had the 2nd tread seperation on the E rated marathons. Tires are dated 27 week of 2010, birthdate.

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Old 04-09-2013, 12:35 PM   #7
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How many people realize that ST tires are only rated to 62 mph? A lot of problems come from driving too fast with them...
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Old 04-14-2013, 03:25 PM   #8
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The biggest problems with any ST Tires is the following

1. Under inflated.

2. Over loaded.

3. Exceeding Max speed of 65 MPH.

Every tire I have blown tire or had a tire separation, has been because of those 3 reasons. Go to load range E's and keep them inflated to proper PSI, Don't overload them and keep the speed under 65 MPH. and change tires every 4 to 5 years.
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Old 04-15-2013, 03:36 AM   #9
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Old 04-15-2013, 05:47 AM   #10
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Quote:
Originally Posted by MHbell View Post
The biggest problems with any ST Tires is the following

1. Under inflated.

2. Over loaded.

3. Exceeding Max speed of 65 MPH.

Every tire I have blown tire or had a tire separation, has been because of those 3 reasons. Go to load range E's and keep them inflated to proper PSI, Don't overload them and keep the speed under 65 MPH. and change tires every 4 to 5 years.
Good advice - thanks
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Old 04-16-2013, 04:07 AM   #11
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I will be replacing my original Marathons with G614's within the next couple of weeks. The original tires have caused no problems and only have a bit over 3,000 miles on them, but they are 4 1/2 years old so...........they are almost gone.
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Old 04-18-2013, 08:26 PM   #12
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I have LT tires instead of ST on my 36 foot Designer. Never had a problem thus far. I have heard too many disaster stories with the ST tires, and I have noticed some manufacturers are putting LT's on as a factory option.
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Old 04-24-2013, 12:18 PM   #13
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If your tires are 15 inch go with the maxxis E rated tire. If you have 16 inch wheels I would buy LT load range E tires.
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Old 04-29-2013, 07:49 PM   #14
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Am I understanding correctly. Buy "LT" you are referring to "Light Truck" tires.
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Old 04-29-2013, 09:02 PM   #15
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Yes, LT = light truck.

Something to consider with ST tires. If the OP opts for E rated tires (where D would be sufficient) solely to run on "stronger" tires (8ply vs 10ply), what psi should be used? Assume that the wheels are rated at a max of 65psi. If running an E tire at 65psi (or less), would this lead to premature tire wear (due to heat build-up)? (same issue if the psi is based on a mnfr's load capacity chart which may be lower than the max psi stated on sidewall). On the other hand, if the wheels (or new ones) can handle the higher psi and the E tires are inflated to 80-85psi (cold), what effect would the increased vibration have on the trailer (assuming no shocks on trailer to dampen the vibration) due to the stiffness from the E tires?
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Old 04-30-2013, 07:53 PM   #16
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I switched to LT's 3 years ago and knock on wood not one issue. Just as a general rule of thumb most manufactures but not all in the trailer,automotive,tractor or anything that utilizes tires uses the cheapest product they can get.
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Old 05-03-2013, 11:56 AM   #17
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As far as I know wheels do not have a speed rating on them but they should have a # rating on the back side of them.
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Old 05-03-2013, 12:33 PM   #18
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I had Marathons on a previous trailer. One that was as spare decided to 'explode', was just mounted on the back of the trailer. Another incident included having to hastily do a tire change on the side of the highway. Never again.
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Old 09-23-2013, 11:54 PM   #19
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The best 16" tire that I've found for my 5th wheels have been the Michelin XPS. They're not cheap - about $300 each, but they are the only tire I'm aware that has steel-belted sidewalls as well as the steel belts under the tread. I've never had one fail and never talked to anyone who has, although I'm sure there is probably an exception out there somewhere. I'll be picking up my new Premier on Wednesday and will be replacing the factory tires on Thursday with the Michelin XPSs.
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Old 09-24-2013, 06:00 AM   #20
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My trailer came equipped with Goodyear Marathon load range D 15" tires @65 PSI. When those had to be replaced, I verified the maximum cold inflation pressure of my rims to be 80 PSI. I bought Maxxis load range E tires, and keep them inflated to 80 PSI cold inflation pressure. I've driven with the Maxxis tires for about 7500 miles so far, primarily in the summer in Texas and have had no issues other than a tread puncture with a 1/4" x 20 bolt, which my TST TPMS system notified me of before any damage occurred.

Rims (wheels) have both a weight rating and a maximum cold inflation pressure rating. Here is a chart from Dexstar, which made my rims: Dexstar Product Information.
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