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Old 07-09-2011, 01:51 PM   #43
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Quote:
Originally Posted by wlanford View Post
I noticed that the Yokahama RY215 (7.00R15) tires have a diameter of 29.4". This is the same as the Michelin LTX M/S LT225/75R16/E tire. Does this mean that the Yokahama is just as tight in the Airstream wheel well as the Michelin? The Michelin LTX M/S2 P235/75R15/XL has a diameter of 28.9" (closer to the stock Goodyear Marathon), but it's a 235 instead of 225. All things considered, which of the above tires would fit better in the Airstream wheel well (and spare tire rack)? All three tires seem to be highly recommended.
The RY215 tire is a narrow tread, more so than the MICHELIN as I recall. While I don't/didn't have an A/S they were no problem to fit under our Silver Streak. They were, in fact, narrower than GY-M tires to which I did have a chance to compare them while parked next to a TT so shod.
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Old 07-09-2011, 04:08 PM   #44
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Quote:
Originally Posted by wlanford View Post
Kosm10, which Michelin tires did you go with, the LTX M/S P235/75R15/XL or the LTX M/S LT225/75R16/E?
The Yokohama has a narrow tread, about 5.25 inches and my rims were out of spec for that tire. I went with the 15" Michelin.

Here is a link to the tire from Tire Rack;


Michelin LTX M/S
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Old 07-19-2011, 03:19 PM   #45
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This will probably cause a stir BUT -- we are in the process of installing the new Light Truck (LT) series LTX M/S2's on our '02 Yukon XL (265/75R16E1) and already have the older design M/S's on our 1998 Sub 2500 (245/75R16E1).
First let me comment that Michelin's are excellent tires & I agree these tires are rounder & ride better than any of the other tires I've had on the Sub before installing the Michelin LTX M/S's @ 175,000 miles.
So here goes -- when talking last week with the Michelin U.S. factory customer service department in Greenville, South Carolina regarding the differences between the LTX M/S and LTX M/S2's light truck (LT) tires I asked about Michelin trailer tires to fit 15" or 16" rims for our '07 Safari.
Was told Michelin doesn't make trailer tires in those diameters and they recommend against using LT series tires on trailers as the sidewalls are not designed for the loads and stresses that trailers uniquely transfer to the tire.
Remember -- I'm only passing along what Michelin Customer Service said.
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Old 07-19-2011, 04:09 PM   #46
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Thanks for the information TKNELLE. It doesn't cause a stir with me. That has been previously posted in another thread. I believe it to be a measure of limiting liability. But, when my trailer was new in 1972, it was shod with Michelin 7.00x15 LT bias ply tires. Someone at some time thought that LT tires were the right tires for Airstreams. And Airstream today thinks that LT tires are great for Airstreams. Michelin does make the XPS rib as well, so whoever you talked to doesn't know the whole product line.
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Old 07-19-2011, 04:30 PM   #47
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Top,
You are correct that Airstream thinks Michelin tires are good as they currently offering replacement 16" rims with Michelin LTX M/S LT 225/75R16 load range tire & wheel assemblies @ Jackson Center.
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Old 07-19-2011, 08:22 PM   #48
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We have a single axle, 19-foot Bambi, so the side forces are almost non-existent; and this is a non-issue for this model trailer.

However, we also have a large boat that has a triple axle trailer. It originally came with passenger car tires, and making the U-turn on the boat ramp was like dragging the trailer sideways. Those passenger car tires looked like they were going to peel off the rims.

We now run load range E Towmasters, because they are relatively inexpensive (although the price adds up when you have to buy six of them); and they still drag sideways when turning. However, since they are pumped up to 80 psi, they no longer look like they'll peel off; they just do a lot of skidding.

In any case, after examining what was left of the Marathon carcass after our blowout, and feeling how floppy those sidewalls were, I can't see how an LT tire could possibly be worse in trailer applications. I designed those trailer tire polls, and I think we need one for LT tires on 16-inch rims.

I suspect that there have been very few failures. And, if there are any, they are probably from nail punctures, etc., that can happen on any type of tire. Has anyone ever heard of a blowout on an Airstream that had Michelin LT tires on 16-inch rims, where the tire disintegrated and damaged the trailer? -- I know there are several people who have made the switch.

(Sorry, if I have hijacked this thread...)
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Old 07-19-2011, 08:31 PM   #49
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That's OK Phoenix! Sometimes people miss the thread title;
Michelin LTX MS2 235/75/15XL

I think your question is better suited for Moosetag's 16" tire thread. But to answer your question, I have not heard of ANY 15" or 16" Michelin LTX tire failure being used on an Airstream. It may take a while for it to happen. I sure hope I never report a failure!
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Old 07-20-2011, 02:12 PM   #50
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Hey, Top, how did the pressures work out on your recent trip. Daily highs when traveling were . . ? And did the wheel/tire combo lose any air over a period of . . ?

Forgot to say I'm pleased to see you've kept the OEM wheel covers. It's perfect, IMO, to my way of seeing a '70's A/S.

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Old 07-20-2011, 07:02 PM   #51
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Under pressure.

Quote:
Originally Posted by REDNAX View Post
Hey, Top, how did the pressures work out on your recent trip. Daily highs when traveling were . . ? And did the wheel/tire combo lose any air over a period of . . ?
.
Hey Rednax et. al.,
When we left the house I had all the trailer tires at 45 psi. This was early in the morning and it was around 80F. The elevation here is 780ft.
Day one highest ambient air temp was 103-105F.
Day two morning pressures were not the same. 43psi at 80 degrees 3,000ft. I kept the pressure at 43.
Day two highest ambient air temp was around 100-102.
Day three the morning pressures were the same. 43 psi 75 degrees 6,500ft.
Day three highest temp while towing was about 80 degrees.
After that I checked it the mornings before towing, but no differences were noted and the temperatures were about the same. So it appears that the tires lost 2 psi due to elevation and or temperature. I checked them back here in the yard the morning after we returned. They were all at 45 except one that showed 44.

I would like to invest in an IR thermometer. Maybe before the next long trip.

All in all, I highly recommend these tires for applications similar to mine.

Quote:
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Forgot to say I'm pleased to see you've kept the OEM wheel covers. It's perfect, IMO, to my way of seeing a '70's A/S.
Thanks! That is why I went with the 15" tires. I try to be a purist. I just wish Michelin still made 7.00x15 bias ply truck tires. I couldn't see Abby with anything other than her hub caps!
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Old 07-20-2011, 07:14 PM   #52
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Scales

Thought I'd post the weights from the scales here.

Here are the numbers from the CAT scales.

Gross weight - 12,480
Toyota front axle 2,740
Toyota rear axle 4,080
Abby front axle 2,800
Abby rear axle 2,860

The Sequoia data plate lists the axle weight ratings as:
Front 3160
Rear 3550

Looks like I need to move/transfer 530 lbs from the rear axle somewhere else.

This is fully loaded for camping with two adults and four teenagers. Fresh water tank 3/4 full. One full tank of propane and one half full. Toyota full of fuel. Black and gray holding tanks empty.
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Old 07-21-2011, 10:15 AM   #53
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Thanks for the tire report. Mine would lose some air along the way and I suspected that the wheel itself leaked. Found a FORD TSB that addressed this problem in a run of Mustang alloy wheels and a fix (dealer to spray epoxy paint on wheel "interior").



Your scale numbers would appear to represent a maximum load on the TV with so many people. By pictures and TOYO published numbers we know the front axle has had weight removed once the trailer is hitched. Any possibility of acquiring the tongue weight from the trailer as represented in the above trip ? Some decent armchair estimates could be made.

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Old 07-21-2011, 07:09 PM   #54
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weight

If you have a weight distribution hitch, shifting the weight to the front axle from the rear axle (of the tow vehicle) can be accomplished. To do this accurately you must go back to the CAT Scales and be preparerd to spend some time adjusting the length of the chains holding the spring bars and raising, lowering and or chainging the angle of the ball mountuntil you have the original tongue height and equal weight on the front and rear axles of the tow vehicle.
When I finished I had between 3100 and 3200 lbs on all four axles. The increase in handling and ridde was dramatic.
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Old 08-03-2011, 10:22 AM   #55
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[QUOTE=Top;1021117]
All in all, I highly recommend these tires for applications similar to mine.

QUOTE]

TOP: Thanks for sharing your experience. My Argosy 26 is having these mounted today.
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Old 10-17-2011, 12:36 PM   #56
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I mounted 16" wheels and 225/75/16 Michelin LT MS2 on my '05 31' Classic yesterday. We begin the drive from Denver to Philadelphia tomorrow
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