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Old 11-17-2011, 12:48 PM   #29
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I think a lot of it is blue smoke and mirrors. I think the 1985LB number is derated from 2185lb which is what the 108T lable on the tire designates. Which according to tire rack was done because the CG of SUV's was higher than a car which puts more dynamic load on the tire in a turn. So think g-load in a turn times the lever arm of the higher CG and it puts more load on the tire than the same weight car would. So if you multiply a P tire rated for 2185 which is a 108T rated P metric tire. If you put it on an SUV you multiply .91 x 2185 + 1988 which rounds down to 1985lb so there is your answer. Now does an Airstream have a high CG compared to an SUV, no probably not and you are not going to be taking turns at 90mph like poeple do all the time in cars.

Now look at speed ratings. This to me means the tire is rated for 100+ MPH with an SUV driving like a bat out of hell. Let's go for the Airstream land speed record. I don't think I will make it since Ford limited my Excursion to 100MPH before the speed limiter kicks in.

Perry
I was going to post the same thing. Agree.
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Old 11-18-2011, 06:37 AM   #30
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This is the Michelin P version Michelin LTX M/S2

and this is the LT version Michelin LTX M/S

The LT version is a little more expensive. I really don't know what makes them different but I suspect the P tire rides better and the LT is a little stiffer.
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Old 11-18-2011, 07:02 AM   #31
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Originally Posted by Kosm1o View Post
This is the Michelin P version Michelin LTX M/S2

and this is the LT version Michelin LTX M/S

The LT version is a little more expensive. I really don't know what makes them different but I suspect the P tire rides better and the LT is a little stiffer.
Looking at the ad, the P tire has load D and E steel belts for heavier loads(hence the XL designation). If I go with the Michelin, I think it will be the M/S2. (XL).
I hope Ican get this figured out soon, I need to buy a new set by Feb. To many choices and strong opinions. But that makes it interesting!
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Old 11-18-2011, 07:38 AM   #32
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The first one is the better tire. It has a 108 service and the second one is 104 service. Also the first one is 1lb heavier. It must be an extra belt on a heavier one (first link) because the tread depth is slightly less than the second tire. I really don't know which is LT and which is P according to their specs.

You want the 108 service rating not 104.

Perry
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Old 11-18-2011, 08:15 AM   #33
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The first one is the better tire. It has a 108 service and the second one is 104 service. Also the first one is 1lb heavier. It must be an extra belt on a heavier one (first link) because the tread depth is slightly less than the second tire. I really don't know which is LT and which is P according to their specs.

You want the 108 service rating not 104.

Perry
There is another tire to consider. The Continental Vanco 2, size 225/70/15. It is rated for 2,470 lbs. It does lower the trailer 1/2". I've got about 10,000 miles on them. Still look like new. Tire pressure I keep at 62 psi. Trailer weighs about 7,200 - 7,400 when loaded. I also do some very tight turns backing up on the cement driveway. No problems so far!
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Old 11-18-2011, 09:26 AM   #34
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Is that Continental tire a trailer tire or what?

Perry
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Old 11-18-2011, 10:38 AM   #35
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Originally Posted by Kosm1o View Post
This is the Michelin P version Michelin LTX M/S2

and this is the LT version Michelin LTX M/S

The LT version is a little more expensive. I really don't know what makes them different but I suspect the P tire rides better and the LT is a little stiffer.
I have no problem with the M/S model except I can't seem to find it in that size anymore. Not even on the Michelin site. They only have the 16" rim version listed there. Discontinued? Thoughts?
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Old 11-18-2011, 11:40 AM   #36
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Sam's club has something similar.

Michelin X Radial LT2 P235/75R15XL 108T

Or this one which is a little bit aggresive for a trailer tire.

Michelin LTX A/T2 P235/75R15/XL 108S

And this one maybe the one you are looking for

Michelin LTX M/S2 P235/75R15/XL 108T

or

BFGoodrich Long Trail T/A Tour - P235/75R15/XL 108T which are the ones I have.

So right here are three Michelin's that would work. You have to special order that takes a couple of days but it makes it easy because you know they will have your tires.

Perry
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Old 11-18-2011, 12:47 PM   #37
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The AT/2 looks like an off road tire. The X Radial is certainly an option as I have a Costco Card. The X Radial is very similar to the MS/2 Specswise. The only difference I see on the Michelin website is the X Radial weighs *slightly* more at 31.94(X) vs 31.35(MS/2). On the Costco website price is exactly the same too.
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Old 11-18-2011, 03:37 PM   #38
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So stop your hand wringing and go buy some tires.

Perry
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Old 11-18-2011, 07:40 PM   #39
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Originally Posted by Xenomorph

I have no problem with the M/S model except I can't seem to find it in that size anymore. Not even on the Michelin site. They only have the 16" rim version listed there. Discontinued? Thoughts?
Did you call Tire Rack? They could tell you if they are still available.
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Old 11-18-2011, 10:33 PM   #40
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Did you call Tire Rack? They could tell you if they are still available.
No, but the website says there are fewer than 2 available.
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Old 11-19-2011, 02:32 PM   #41
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Hi Everyone

It appears that what Michelin has done is rationalize two tires into one. Which makes sence considering how few 15" tires there are getting to be. Previously the P235/75R x 15XL tire carried 41 PSI. The LT 235 carried 50 PSI.

Now that the LT 235's are no longer available the 235 XL tire carries 50 PSI. I think this is the same tire as the old LT tire. The sidewalls feel the same, the old XL was softer.

We have a set of the new XL's running on a commercial unit that weighs 7800 lbs. on the axles. These tires have about 8000 miles on them now at high speeds with no problems. They appear to run the same temperature as the LT's.

I feel considerably more confident with the 50 PSI Michelin 235 XL's on an Airstream than any trailer tire, espessially heavier tandams such as 30 classics etc. One big benefit of these is that they stay in balance where as the TT tires tend to loose theirs after a while. Beyond that they do have considerably more traction in a panic stop, espessially if it happens to be wet.

I hope this helps.

Andy
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Old 11-19-2011, 03:41 PM   #42
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Thanks Andy. I'm glad you weighed in on this. Makes sense since Tire Rack's description of the new XL tire is now for light trucks and suv use, which is what the LT description said. Sounds like it might be even better. I put a seasons use on my LT's without even loosing air. Speaks well of your Canadian made Michelins.
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