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Old 07-12-2011, 07:31 PM   #1
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Tires

If anyone has Ultra CRT tires beware! With about 1200 miles, tires look great on 2 year old 831RLSS Flaggstaff. Rolling at 60 MPH with cold PSI at 50 I had one blowout. I did a simple google search to find that they are Chinese made and several complaints to NHTSA have been filed. I lowered the cold PSI to 46 to allow a little room for pressure get a little higher and hopefully not blow another one. Does leave me concerned, however. It is a sad thing for a manufacturer to put such tires on any type of vehicle.
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Old 07-12-2011, 07:50 PM   #2
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Looks like you are a newby on the forums. this is an all to common complaint on the RV forums. It is a disgrace, but they are doing it for cost. As long as the trailers arrive at the dealers then it is our problem. Depending on what wheel size you have do some research using the search function above and you will find only one 15 inch tire that appears to be OK, and several really good 16 inch tire choices.
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Old 07-12-2011, 08:04 PM   #3
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Can you list tires that are ok?

Thanks,
Al
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Old 07-18-2011, 09:29 PM   #4
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I changed mine over to Maxxis load range 'D'.
They have a good reputation.
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Old 07-18-2011, 10:38 PM   #5
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A friend of mine had 2 ultra CRT's blowout on his 831 rlss. It tore up his fender skirts and lower trim pretty bad. I had the same tires on my 831qbss. He and I both went to Maxxis load range D. I feel much more comfortable towing now. After reading all the threads and problems folks were having, I felt like it was a matter of time before I had blowout and really didn't like the thought of tearing up one or both sides of our trailer.
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Old 07-28-2011, 10:29 PM   #6
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shouldnt let the air out, the tire is designed to carry the max load at the cold pressure stated on the tire. If you let the air out it also decreases the max load it will carry. always check them cold.

by the way I work for Goodyear, been there for 9 years havent heard of any problems with there Marathon trailer tire. U-haul also uses them.
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Old 08-01-2011, 10:02 PM   #7
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Quote:
Originally Posted by gsbuick65
shouldnt let the air out, the tire is designed to carry the max load at the cold pressure stated on the tire. If you let the air out it also decreases the max load it will carry. always check them cold.

by the way I work for Goodyear, been there for 9 years havent heard of any problems with there Marathon trailer tire. U-haul also uses them.
I am aware of issues with lowering pressure and that is the reason I only went down 4lbs. They were aired to the 50 psi the day before the tire blew. Those tires are junk with several complaints filed NHTSA. I have travelled from Louisiana to Arkansas since I dropped the pressure with no problems. I did, however, check them very often with the intent to change all four of them if I had the slightest problem. I also talked to my local Goodyear dealer who is a personal friend and he recommended not putting the Goodyear tires because his customers were have problems with them also.
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Old 08-01-2011, 11:48 PM   #8
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Even Goodyear Marathons are made in China, don't believe it? Read the sidewall, the fine print.
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Old 08-03-2011, 11:59 PM   #9
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Quote:
Originally Posted by windrider
Even Goodyear Marathons are made in China, don't believe it? Read the sidewall, the fine print.
Yes, you are right. It's hard to find tires that aren't made in china or anything for that matter.
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Old 08-11-2011, 10:15 PM   #10
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I also had 3 blowouts in less than 100 miles on night with my 831RLBSS and Ultra tires. They had 50 PSIG prior to parting that evening as I checked them. The tires had less than 2000 miles on them and looked great. I never drive faster than 65 MPH when pulling my rv. One of the blowouts caused major damage to my rv when it blew. I notified Carlile Tire and they have agreed to paying for the new tires I had to purchase and also to pay for the repairs to my rv. Since then I have installed US made tires and have a load range of D. I feel much better now. I also made Flagstaff aware of this issue with the tires. I understand that Carlile is no longer a supplier of tires for Flagstaff. Has anyone else heard that?
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