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Old 08-10-2013, 08:22 PM   #1
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Carlisle tires vs Goodyear, ST vs LT tires on 23B??

Hey all I need to replace my OEM tires on my 23b and need some input. I am willing to bet that they are the original tires because the TT was not used much and the tires have great tread they are just dry rotting from between the tread to the sidewalls. The original owner did however keep tire covers over them. If there is already a post in regard to this issue just point me toward it! Carlisle tires vs Goodyear... so far I have not heard good things about the Carlisle tires on other TT. I have also read that many people have gone to a light truck tire but, I am not sure if they are even compatible with the Goodyear ST185 size that we use. Price is not really that much different....about $20 more a tire for the Goodyear...that does make it enough to at least do a comparison though.

Do any of you put your TT up on jack stands to get the weight off the tires when not in use?

I also read in the old manual that tire pressure should be at 35psi. Seemed a little low to me. The previous owner discovered sway problems with it if he went above that. I just went with what he did and kept them at 35psi. and had no problems. Just concerned that new tires may wear different since the tires I am replacing must be at least 12 years old. We have not done any trips over an hour drive since I was not 100% confident in the tires until I get them replaced this week for our fall camping season.

Thanks
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Old 08-10-2013, 08:37 PM   #2
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Look at the tire identification number, which is a code that displays where the tire was manufactured and size. The format of the tire identification number changed in the year 2000. If the last four symbols of the tire identification are digits, the tire was produced in or after the year 2000. If only the last three symbols of the tire identification number are digits, the tire was produced before the year 2000

The last (2) digits (of the ending 4 digit code) tell you the manufacture year (i.e XX08 means the tire was manufactured in 2008)

I find it hard to believe the correct tire pressure is 35#....probably correct is 45-50#

Running heavy load tires under inflated increases heat, deteriorates sidewall integrity (causing cracks and sidewall blowouts) and contributes to TT sway.

TT tires are usually recommended to be replaced every 3-5 years. Tires with excessive mileage / UV exposure / misuse should be considered for replacement sooner than later.
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Old 08-10-2013, 09:03 PM   #3
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There is a battle raging on RV.NET regarding Carlisle' "redesigned" ST tire. Carlisle has added a nylon cap to the tire which is supposed provide added strength and heat resistance. http://www.carlisletransportationpro...adial-trail-rh. Come in sizes from 12-16" and are widely available. Some posters on RV.Net that have purchased them report so far, so good. And the naysayers predictably say "nay" but don't own them or have sworn allegiance to Maxxis, which while maybe good, doesn't have a wide ranging distribution network. Ya pays your money and takes your chances I guess. But I firmly believe how one maintains the tires, loads the tires, maintains inflation pressures, and drives has more to do with tire longevity than who/where they were built in a lot of cases. I have on our WhiteHawk whatever China tire Tredit Tire supplied Jayco. No problems at all to this point. If that changes, I might consider Carlisle or dare I say it, GY Marathons!
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Old 08-20-2013, 07:52 PM   #4
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This might be too late but I just joined. I just purchased GY tires from a site called www.treaddepot.com and they were the best deal. Free delivery if you can install them yourself. I paid $76/ea. That was about $30 cheaper than anyone local...food for thought.
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Old 08-20-2013, 07:59 PM   #5
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How 'bout Maxxis?
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Old 08-21-2013, 08:35 AM   #6
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The original tires were as I suspected.....2000 manufactured tires. So I put the Carlisle tires on, $78 ea on the rim, so now that I followed the torque pattern and set them all at the final value of 115ftlbs the question of tire pressure remains. The manual and the previous owner kept them at 35psi. I however agree with previous posts that it should be higher....more like 40 - 45. Any further input? Thanks
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Old 08-21-2013, 09:47 AM   #7
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My preference, but on our fifth wheel and now on our WhiteHawk, I inflate and maintain the trailer tires to the maximum cold inflation pressure listed on the sidewall. Always have, always will. That way I never have to worry if the tires are adequately inflated for the load they are carrying because they are inflated to the limit set by the manufacturer.

The fifth wheel we owned was a HitcHiker LS, which from the factory came with 6000 lbs axles and E Range tires. The original owner had the MorRyde IS with 8000 lb. shear springs installed and it rode on GY 614RST tires. Now their loaded gross weight was in excess of 14000 lbs, but the suspension was up to the job. He did experience a destructive tire failure once or twice with the 614's. I believe that happened because the tires were loaded at or near their rated capacity, and that seems to be a common theme with any RV and tire issue. The manufacturers seem to bolt on what gets the job done with little margin to spare. When we bought the HitchHiker, we had zero problems with the tires. Did have to replace all due to age, and one that I "curbed" in a shopping center parking lot.
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Old 08-21-2013, 07:02 PM   #8
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thanks I will put more air in them and I didn't even think to look at Maxxis tires.
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Old 08-21-2013, 07:53 PM   #9
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Quote:
Originally Posted by thomasmnile View Post
snip....... I inflate and maintain the trailer tires to the maximum cold inflation pressure listed on the sidewall. Always have, always will.....snip
X2

I put a set of Carlisle "RH" Radial ST225/75R15, "E" Load Range, on my TT in the spring of 2012. Haven't had any issues with them, and don't expect any based on two seasons of camping and a winter round-trip to Texas (replaced my aging OEM Maxxis tires).

Bob
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Old 08-21-2013, 08:27 PM   #10
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I did a lot of homework on tires yesterday and Carlisle tires were not even considered for my rig.
The best Carlisle 13 inch tires max rating is still only 1480 lbs; no where near Kenda Loadstar 1725 lbs
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