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Old 05-21-2015, 09:06 PM   #1
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Tire question

Our 2015 pinnical
Has Rainer ST 10pr range E
St 235/80 r16
Are these the bad tires that I keep seeing people post about ?
Our Maiden trip is this weekend for the shake down of the unit . A 2 week trip for the middle of June from
St. Louis to the southern rimof the Grand Canyon so if I need to change the tires I still have time.
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Old 05-21-2015, 09:25 PM   #2
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Most of the posts related to tire problems are about powerking tow max tires.

There is much debate about the quality of tires and why, if at all, some tires seem to have a higher failure rate than others.

IMHO, and from some research, found that most tires appear to be engineerined and designed in one country, but produced from several large tire plants in China. Some big name brands are also made in China as well.

These same plants appear to private label and sell tires around the world, so it's hard to pin down what's what.

A few key rules to follow:

Understand the weight ratings of the tires and weight of your trailer. Don't push your luck by overloading weight limits ( stay well under ) ( trailer GVWR, minus tongue weight, divided by the number of tires. Compared to the weight ratings found on the side of your tires)

Set air pressure to the right level found on the side of your trailer. Keep a close eye on the air pressure. Check every day on your trip. ( cold )

Observe the speed ratings for ST tires (60 mph )

Inspect tires for signs of damage or sidewall bulging when you stop along the way.

These are all true no matter what type of tire you have.

I have the dreaded tow max tires and I am not rushing out to replace them

Just my .02
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Old 05-22-2015, 08:36 AM   #3
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I agree with Jmoo and would add that I also recommend a tire monitor. That could save you from some damage should you not notice a tire failure. Some folks have no trouble with their China-made tires and others (like me) have had plenty.
I think I took as good care with mine as Jmoo does but....
Can't explain it but stuff happens.
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Old 05-22-2015, 09:04 AM   #4
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Every time you stop take a look at your tires.. and the really big thing is to keep your speed under 65 mph .. that is all ST tires are rated for.
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Old 05-22-2015, 09:14 AM   #5
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I have the Tow Max tires on my Eagle Premier. I keep them at the maximum air pressure as stated on the sidewall, keep my speed at or under 65 mph, and have travelled around 15,000 miles with them without any problems at all. I check them at every fuel stop for overheating and watch the weight of my unit to keep it as low as possible. Once again, no problems.
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Old 05-22-2015, 01:21 PM   #6
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Rainier

Regarding Rainier tires.

Murff
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Old 05-22-2015, 01:25 PM   #7
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From Rainer about us: " global and domestic product sourcing"
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Old 05-22-2015, 09:24 PM   #8
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I was doing some work on the 5th this afternoon at the storage. A young guy arrives and is hooking up(Memorial Day trip). He was at it a while and I saw tools in action. I wander over to ask if he needs something I might have. His prob is the electric tongue jack. He's just gotten it working and we chat. Owned his prev owned TT about a yearand I see it's an older Forrest River. I told him about my recent tire troubles. Taking a look at his I see they're the TowMax, a closer look and they have xx10 build dates. 5 yrs! They are 14" and he's prolly in the 4000# range. Based on what a service tech pointed out to me, one of his looked questionable to my inexperienced eyes.
That was, looking across the tread the tire was domed or arched. The center treads were raised compared to the shoulder treads and that's what you see when the plys start to separate.
So this lends argument to the thought that it's the larger tires and heavier rigs are the problem areas.
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Old 05-22-2015, 09:45 PM   #9
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Quote:
Originally Posted by djalbrec View Post
I have the Tow Max tires on my Eagle Premier. I keep them at the maximum air pressure as stated on the sidewall, keep my speed at or under 65 mph, and have travelled around 15,000 miles with them without any problems at all. I check them at every fuel stop for overheating and watch the weight of my unit to keep it as low as possible. Once again, no problems.
Ours is also a '13 but is a 351 so we're probably heavier. I'm assuming we have the same tires (ST235/80R16). We scale in at 12700# which is under the GVWR but I'm starting to think I was too heavy for the tires. I think the weight limit was 3520# so I should be good to about 14k#. We only got 7500mi out of our TM's.
I'm glad you've had good service from yours. I will claim to every bit as diligent as you regarding pressure, temperature and speed.
It's a puzzle
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Old 05-23-2015, 06:38 AM   #10
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Red horse, the 3520 weight limit is for single axle applications if I am reading the chart right. The double axle weight limit per tire is 3080 pounds per tire which would put you just over the max or at least right at it. Someone can chime in if I am reading the chart right. I don't understand why the limit per tire would be less on a dual axle than a single. Some of you smart ones can explain the difference.
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