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Old 11-26-2011, 04:44 PM   #15
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Originally Posted by RTurnConn

I feel comfortable with the pseudo LT tires. Yes they are XL. My 31 has a dry wt of 5500 & I will never get close to 8000lbs. I leave a lot of my house at home. If I thought I had 8000 lbs I might agree with you.
Yeah, I'm on my IPad and the app doesn't let me see what AS you have unless it is in your text, so I don't know if we're talking Bambis or 34s. I assume you have an older 31. I still bet you'd be surprised if you ran over the scales. Dry weight may not mean much. You're probably still fine with your p metric XLs. Some would still argue that a p- metric doesn't have the sidewalls to stand up to trailer use (they might say the same thing about LTs), but on my old 5500 lb SOB, I used some P225 75 r15 takeoffs and they were fine for 4 years and probably 10,000 miles.
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Old 11-26-2011, 05:05 PM   #16
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Originally Posted by UAPachyderm View Post
I changed to Michelin LT 16" ... best upgrade decision ever! Spare fits fine. Search threads there is a lot of information on this subject here, especially during 2010-2011.
Thanks.......Great to know.
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Old 11-26-2011, 05:27 PM   #17
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Originally Posted by RTurnConn View Post
I just bought four Michelin LT 15 inch tires yesterday. LTX M/S2 235 75 15 108T. There are a number of 15 inch LT tires available.
Me too, I didn't want to pop for 4 new 16 wheels. My tires each carry about 2100 pounds, plenty of capacity for my 6300 gvw Safari. There is lots of room in the wheel wells of my 2004 Safari for the slightly bigger tires.
These tires ride much smoother than my E rated ST 225's (I had to switch to E's because I had serial tire failures with D rated 225 GYM's). I can run 70 mph all day in 100 degree plus temps and not have a problem.
There about 4 or 5 threads with hundreds of posts on this forum about upgrading to "P" and "LT" tires. No reason not to other than a slight increase in cost per tire and tight wheel well clearance in some model AS's. Some heavy, double axle Airstreams may have to go with 16 inch wheels to get a D or E loan range LT tire. In the 235 15 inch size, any load range higher than C is hard to come by.
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Old 11-26-2011, 05:30 PM   #18
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I am a newbie to AS but if we all listened to, and believed every comment posted we would have an AS with no tires or batteries or convertors for that matter. You just take it all in, use your own intellect, and make what you believe is the best decision. The input fom others is invaluable however.
My AS is a 1985 31 ft. limited. My owners manual lists the dry wt as 5500 lbs. I think as the years went on the general weight increased.
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Old 11-26-2011, 05:45 PM   #19
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We changed to 16" Michelin LTX tires a couple of years ago and are very happy with them. We now have something like 24,000 miles on them and they are wearing much better than the Marathons did. I have been running 68 lbs. in them, but have increased it to 72 as the edges were wearing slightly faster than the centers. The Marathons lost air despite changing valve stems. The Michelins do not lose air.

We got the same wheels Moosetags did. They come from Tredit, a tire and wheel company in Indiana that Airstream gets supplies from. They are not the only company that has similar wheels. Just make sure they are rated for Load Range E tires and have 0˚ offset.

It is difficult to find a good LT tire in 15" for the size tire Airstream has been using in recent years, so we went to 16" wheels after measuring the space available about 100 times. We wanted Michelins because we have always had good experiences with them and they ride smoother than many other tires.

We got 5 new wheels, all the same, and rotate the spare around and will thus get more miles out of the set of 5 wheels and tires. The tire carrier has steel holders around it that can be bent outward to fit the 16" tire, but we carry it in the truck bed as it is easier to get in and out and easier to check air pressure.

Some people use the Michelin Rib tire. This is a tire designed for commercial trucks and the carcass will last a very long time as the tire is meant to be retreaded. It has steel cord in the sidewalls and appears to be a very firm tire, perhaps too much so. I expect the carcass will last well over 100,000 miles and seems like overkill to me. The firmness of the sidewalls may make it harder to back up at extreme angles because of the inability of the tire to bend sideways until it skips. The LTX looked like the best deal—it should last 50,000 miles or more and we will probably get to that in 5 years of use when it is time to get new tires anyway.

ST tires are not speed rated. It is suggested not to go more than 65 mph with them, and if you go faster to increase air pressure. Most speed rating is done because of gov't regs on passenger cars. I don't believe LT tires have to be speed rated, but many are and the ratings are in the 90's or higher. It's rough not to be able to tow at 120 mph, but you have to accept certain limits to have an Airstream.

Gene
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Old 11-26-2011, 05:47 PM   #20
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Quote:
Originally Posted by dznf0g View Post
There are no 15" LTs out there. Gotta go 16".
I put these 15" LT tires on my trailer and my worries about tires disappeared.

Yokohama RY215
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Old 11-26-2011, 05:48 PM   #21
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Quote:
Originally Posted by RTurnConn
I am a newbie to AS but if we all listened to, and believed every comment posted we would have an AS with no tires or batteries or convertors for that matter. You just take it all in, use your own intellect, and make what you believe is the best decision. The input fom others is invaluable however.
My AS is a 1985 31 ft. limited. My owners manual lists the dry wt as 5500 lbs. I think as the years went on the general weight increased.
No question that newer units are generally heavier. But understand that the dry weight is a base weight before any optional equipment. And, of course, before any of your gear, groceries, clothes, etc, etc..... Also, from my experience, our particular units gain a significant amount of weight as we live with them over time and slowly add items. MUCH more than you would think. I suggest at least annual weighings.
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Old 11-26-2011, 05:58 PM   #22
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Originally Posted by CrawfordGene
We changed to 16" Michelin LTX tires a couple of years ago and are very happy with them. We now have something like 24,000 miles on them and they are wearing much better than the Marathons did. I have been running 68 lbs. in them, but have increased it to 72 as the edges were wearing slightly faster than the centers. The Marathons lost air despite changing valve stems. The Michelins do not lose air.

We got the same wheels Moosetags did. They come from Tredit, a tire and wheel company in Indiana that Airstream gets supplies from. They are not the only company that has similar wheels. Just make sure they are rated for Load Range E tires and have 0˚ offset.

It is difficult to find a good LT tire in 15" for the size tire Airstream has been using in recent years, so we went to 16" wheels after measuring the space available about 100 times. We wanted Michelins because we have always had good experiences with them and they ride smoother than many other tires.

We got 5 new wheels, all the same, and rotate the spare around and will thus get more miles out of the set of 5 wheels and tires. The tire carrier has steel holders around it that can be bent outward to fit the 16" tire, but we carry it in the truck bed as it is easier to get in and out and easier to check air pressure.

Some people use the Michelin Rib tire. This is a tire designed for commercial trucks and the carcass will last a very long time as the tire is meant to be retreaded. It has steel cord in the sidewalls and appears to be a very firm tire, perhaps too much so. I expect the carcass will last well over 100,000 miles and seems like overkill to me. The firmness of the sidewalls may make it harder to back up at extreme angles because of the inability of the tire to bend sideways until it skips. The LTX looked like the best deal—it should last 50,000 miles or more and we will probably get to that in 5 years of use when it is time to get new tires anyway.

Gene
Gene, do you know how much weight you have on your tires? I have noted, albeit only after about 1000 miles, that I am not running with the edges on the ground at 65 psi. I was thinking about dropping to 60 psi.
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Old 11-26-2011, 07:01 PM   #23
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dzn', I haven't weighed the trailer full or empty. I tried but there are no scales in the county anymore and by the time I've left the county, I don't care anymore. GVWR is 7,300 lbs.

Do you have 3 axles? Each tire on yours may have less weight than mine. I believe Moosetags has his tires at 72 lbs., but I could be wrong. We both have 25's, but I don't know how close his is in weight.

Pressure is determined by a gauge which may be wrong. There's a 3 lb. (about 4%) difference between my hand held gauge, the TPMS and the 12 v. compressor's gauge.

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Old 11-26-2011, 08:29 PM   #24
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Quote:
Originally Posted by dznf0g
Let me ask this....I've been trying to figure out what to do for a spare....Then I asked myself, if it's ok to drive to the next tire store on 3 wheels (4th, flat, removed), then why can't you use the stock 15" spare to get to the next tire store? I understand why you wouldn't travel long distances this way, but it is an EMERGENCY spare only for my use.
This is a valid question and I hope others may share an opinion on this. The owner's manual that came with my trailer says it is allowable to remove the failed wheel and drive up to 100 miles not exceeding 30 mph. Doing the math for my trailer as weighed and the ST225/75/15 LRE tires, the solo tire would be carrying 37% above rated capacity. It seems reasonable to use a 15" spare to augment the other 3 or 5 in a pinch vs no support at all. That seems comparable to using the donut spare we're so used to on our cars.
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Old 11-26-2011, 08:56 PM   #25
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I wonder if you could find a donut that would fit a trailer axle?
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Old 11-26-2011, 10:20 PM   #26
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I put these 15" LT tires on my trailer and my worries about tires disappeared.

Yokohama RY215

I thought about these, and even priced them out. A bit hard to obtain, but certainly the correct size and type (7.00 x 15) for an older Airstream. Perhaps a bit stiff, but keeping air pressure to 50 psi or so should help.

I went with Yokohama Geolander H/Ts - 215/75/15, Load Range C. I am very happy with them, and they are quite adequate for the 5500 lbs or so that we have on the trailer axles.
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Old 11-26-2011, 10:23 PM   #27
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I wonder if you could find a donut that would fit a trailer axle?
I don't carry a spare. If I have a flat, I'll travel on three tires to the next town, as suggested by Airstream.

One advantage of staying with 15" wheels is the ready availability of P-metric tires from any tire store, if an emergency replacement is needed.
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Old 11-26-2011, 11:12 PM   #28
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We have a 2009 -28' Flying Cloud. We recently installed 4 -16 wheels c/w Toyo 16" load range E ,I run 60 PSI in both the TV and the trailer.We have just returned from a 6000 mile trip. The tires seem to be wearing evenly across the tread. It may just be my imagination, but I feel that the trailer tows easier, I don't know how to substantiate this, but I feel it is so.As far as any other performance factors ,I have not noticed any, except for the feeling of safety.
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