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Old 08-13-2013, 08:06 AM   #1
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Carlisle tread diagnosis

On August 3rd I was making a pre-trip inspection of various things on the trailer and I decided to make a closer inspection of the tires after reading many of the tire issues on this and other forums.
I jacked up the trailer and was spinning the tires and found an area on the street side front of the trailer tire where it looks like the tread is starting to rip apart. There are two rips approximately 1/8" long and another at least a 1/4" or more. The rips seem to be very deep and don't look to be a result of road rash.
I assume this is the start of tread separation or has the belt let loose?


When looking at the side profile of the tire the second row of tread is higher in this area.
I also found a second tire on the curb side rear that seems to have a slight bulge in the tread and makes it wobble when rolling on the concrete. I didn't trust the remaining two tires for this trip.



The tires are Carlisle ST225/75/R15 D rated, built the 18th week of 2010. They get covered at least 50% of the time, trailer is placed on jack stands in the off season, tires are not weather checked anywhere and have never lost air. Until now I have been pretty satisfied with them except they run warmer than the truck tires.

For our week long trip I borrowed some tires from my sisters travel trailer until I had more time to work on this issue. Interestingly enough two of the borrowed tires were Carlisle E rated and two no-name D rated ST tires. Both sets of tires seem to run very hot on the highway at 65 psi but the Carlisle E rated tires seem to be hotter than the D rated no name tires. Outside ambient temperature was 80 degrees.

While on the trip I stopped at a cat scale to get the axle weight. The trailer was fully loaded with water, groceries, clothes etc... The combined axle weight was #7,260. I tried to get an individual axle weight with only one axle on the pad but the number was skewed due to the slope coming off the scale and only revealed 3,060#. I found a weight ticket from last year and the combined axle weight was 7,360#.

I have been looking at the tire threads here on the forum and tire manufacturer websites and it seems that there are three options.
Option 1: Michelin LTX 15" XL - I like this option but doesn't leave much room for cushion and makes me nervous. The trailer individual GAWR is 4,000# so these tires are right on the bubble for covering the weight rating.
Option 2: 16" upgrade - very expensive......
Option 3: ST tires and cross my fingers......

I plan to visit the local tire shop later this week and see what they think.

What do you think?
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2009 Dodge 2500, 6 Speed Auto, CTD, Quad Cab, Short Bed
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Old 08-13-2013, 08:23 AM   #2
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Looks like a rubber problem but might be belts as you say. I think that an E rated tire might be right for your application. I run Carlisle's currently and have not seen that type of problem. What is the age of the tires?
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Old 08-13-2013, 08:37 AM   #3
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18th week of 2010
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Old 08-13-2013, 08:45 AM   #4
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I would definitely not ride on those tires. My suggestion is to call Carlisle. Explain the problem.

When I had an issue with tire wear and a blowout, they requested that I send them the tire to be inspected. They sent me a UPS label for the return. The end result was a full refund of the original tire purchase. I have to assume tire defect.

By the way no cost to me. Good luck.
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Old 08-13-2013, 08:48 AM   #5
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I would definitely not ride on those tires. My suggestion is to call Carlisle. Explain the problem.

When I had an issue with tire wear and a blowout, they requested that I send them the tire to be inspected. They sent me a UPS label for the return. The end result was a full refund of the original tire purchase. I have to assume tire defect.

By the way no cost to me. Good luck.

By the way they gave me a refund for all 4 tires. Same problem with all.
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Old 08-13-2013, 08:48 AM   #6
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Consider yourself lucky like me. Here's my two E rated Maxxis ST tires that I caught before they blew on the road. These were off the front axle. The tires next to each are the rear axle tires from the corresponding side of the trailer. They did this on their first trip of season 4 of use. I bit the bullet and went to 16" LT's.

Even though this replacement cost more, and with one prior failure of a Marathon that had a belt failure at the end of year 3 of use, I've come to the conclusion that based on my trailer and its use, ST's will only give me 2-3 years safe service before needing replacement. The cost difference in LT's will come back over the years with longer service life. (based on reports from others on the forum)

Watch for sales and rebates. My Michelins were purchased last year for from Discount Tire Direct for $202 each with an additional $70 rebate from Michelin. Free shipping no sales tax, tires were 6 weeks old from manufacture date. That was about $15 higher than the price for a new Maxxis E rated ST replacement. The Michelin's have gone up this year but I'm assuming the ST's have made a jump also.

I sold my Alcoa wheels via Craigslist and purchased 4 Sendel T03 wheels. Net cost to me for the wheel change out was $60 a wheel which included shipping and no sales tax.

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Old 08-13-2013, 09:38 AM   #7
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Quote:
Originally Posted by crispyboy View Post
18th week of 2010

Amazing!

You are lucky to see this before it turned bad.

I had a defects on my original GYM's at around the 1 year mark, but that was expected with those.
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Old 08-13-2013, 10:08 AM   #8
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Looks like a rubber problem but might be belts as you say. I think that an E rated tire might be right for your application. I run Carlisle's currently and have not seen that type of problem. What is the age of the tires?
Bluto, I assume you mean going to an E rated trailer tire. I don't this would really help the situation as the D rated trailer tire should be more than enough to handle the weight. Still bugs me that they run so much warmer than the truck tires. I think the original owners manual only called for a C rated tire which seems marginal at best.
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Old 08-13-2013, 10:09 AM   #9
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Jack,

Help me here. Why are the tires different heights? It looks like they are different sizes. Was this missed when first installed or did something happen to them as you went down the road?
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Old 08-13-2013, 11:41 AM   #10
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Quote:
Originally Posted by crispyboy View Post
... Snip...
Option 1: Michelin LTX 15" XL - I like this option but doesn't leave much room for cushion and makes me nervous. The trailer individual GAWR is 4,000# so these tires are right on the bubble for covering the weight rating.
Option 2: 16" upgrade - very expensive......
Option 3: ST tires and cross my fingers......

I plan to visit the local tire shop later this week and see what they think.

What do you think?
I'm not an expert so take my thought process with a large grain of salt.

The 15" Michelins have a sidewall stamped 2183 capacity. If being used on a trailer, DOT requires a 10% derating for 1984/tire.

Are you a double or triple axle? If a double, you're really at the limit. If a triple you're probably fine. The following assumes a double.

4@1984= 7938 max capacity. While your 7260 is within that limit, others here (I believe Capri and possibly Tireman) recommend not going above 85% capacity which on a derated Michelin 15 is 1725/tire or 6900 for 4 tires. If you include that headroom, your 7260 exceeds this limit and you should go with the 16s.

I went with 15s because the derated 10% gives me 7938 max and my trailer's GVWR is 7600 - and, fully loaded except black and gray which I don't travel with is 5880 against a 6900 capacity which leaves more than 15% head room on top of the 10% derating.

You'd need more input from our resident tire engineers regarding the 15% headroom suggestion but it sounds like you'd be too close for the 15s to work for you.
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Old 08-13-2013, 12:28 PM   #11
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What you say makes a lot of sense. I forgot about the 85% rule on weight. Hopefully one of the tire engineers will chime in again on this rule.
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Old 08-13-2013, 05:53 PM   #12
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I went from E-rated Carlisles to 16" Michelin E-rated. The Michelins run much cooler on the road and give me some peace of mind when it is over 100 degrees here in Texas.
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Old 08-13-2013, 06:12 PM   #13
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I have heard almost as many horror stories on Carlile's as I have with Marathons. When it comes to safety, expense is no object IMHO. I also bit the bullet and did the 16" Michelins and Sendel wheels. I had almost new Marathons on my old Alcoa's and the fellow that bought them put them on his 21' car hauler and had 2 flats in 200 miles. Sorry for him but glad it wasn't me. If I were you, I would go for the 16" LT's and be done with the worry.
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Old 08-13-2013, 06:56 PM   #14
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I had almost new Marathons on my old Alcoa's and the fellow that bought them put them on his 21' car hauler and had 2 flats in 200 miles.
Hmmm - now I'm wondering whether I should even sell the GYMs I just took off the trailer? They were made in nov 2011, have less than 5k on them (new 2012 trailer put on the road this year in April) but I pulled them off having been convinced here that they're not the best long term solution for me. Was thinking of asking $100 for the 4 of them but am now wondering if I should just trash them altogether. I'd hate to think someone would experience the problem I'm trying to avoid....
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