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Old 09-22-2008, 03:48 PM   #113
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Originally Posted by Phoenix View Post
....the Michelin XPS Rib's are 225/75R16, LR-E, will be approximately 1-inch larger in diameter. While I originally thought that this would be no problem, it looks like there are only a few inches of clearance (on the outside diameter) between the existing tires and the wheel wells.

Have any of you that switched to 16-inch wheels and 2.25/75R16 tires had any problems with clearance?
No reality, you are only ~3/8" closer on each side. In towing, the Michelins track soooooo much better than the Marathons, it's a completely different towing experience. Out of habit, we do monitor tire pressures, but in the past year, there has been less than 1-lb of pressure decrease total.....unlike the Marathons.

I guess, with the Michelins, we spend more time enjoying the trip and less worrying about tire failures...

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Old 09-22-2008, 07:59 PM   #114
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By the way, since Michelin XPS Ribs are summer/highway tires, how do they perform in the winter? We camp in cold weather too, but usually don't venture very far off the beaten path in ice, snow or mud. I was just wondering if they are harder than rocks in cold weather, or whether they are prone to wheel-lockup when it gets a little slick...

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Old 10-07-2008, 02:39 PM   #115
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UPDATE: The Michelin XPS Ribs in 225/75x16 and new 16-inch wheels did not fit -- too big. Dang!

Looks like we are going to keep our old wheels and try Maxxis 225/75x15, LR-E. It is sure frustrating that there isn't much selection in tires, and 16-inch wheels won't fit.

Also, it seems like Airstream designed our 19-foot Bambi with tires that are too small for the load; and they didn't leave enough clearance to put on larger ones. Is there any solution to use larger wheels/tires besides radius-ing the wheel wells, like they used to do with muscle cars in the 60's?
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Old 10-07-2008, 03:25 PM   #116
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What makes the new tires too big to fit? Where do they rub?
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Old 10-08-2008, 10:48 AM   #117
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Tires rubbed probally because the fender wells were probally designed for the ST225/75R15 instead of the 7.00-15 tire that the older trailers were designed for.
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Old 10-08-2008, 07:22 PM   #118
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Hey Phoenix,

Too big in which dimension? Height, width, offset? The height difference should be only 29.4" - 28.25" = 1.15". Width is almost the same as a 225/75-15 as seen in the picture on post #69 of this thread. Maybe Beginner is right in that Airstream may have decreased the wheel-well opening size on late-model Bambi's. Our Safari was designed for 15" wheels and tires, but 16" fit with adequate clearance. In fact, the diameter of the separated GYM we experienced was greater than the new Michelin XPS rib (again, please see post 69). I'm surprised that Airstream would have decreased clearance on single axle trailers over the years.

Update time. We now have over 12,000 miles on the XPS ribs and have experienced no problems. We went to Disneyland over the summer and noted that all of the trams that shuttle guests from the parking lots use XPS rib tires. We felt rather vindicated by this in that one of Disney's highest priorities is guest safety.

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Old 10-09-2008, 02:10 PM   #119
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The tire width was too great to fit between the hub and the outside skirt of the wheel well. Discount Tire tried jacking the trailer up higher, angling the tire/wheel, etc. and there was no way that the tire was going up in the wheel well.

I think they might have been able to deflate the tire and squeeze it in, but then how the heck would I get it off if I had a flat on the side of the road. Also, the outside diameter clearance was only about 2 or 3 inches with the 225/75x15, it was probably going to be 1.5-2 inches if they had been able to get the XPS Rib into the wheel well, which is really close. I really didn't want to risk ripping the entire wheel well out if we had another blowout. Also, the clearance between the edge of the 15-inch tire and the outside skirt of the wheel well is only about an inch; and the XPS Rib is a wider tire, so that would so tight that you couldn't get your hand between the tire and the outside edge (skin of the trailer).

So, Airstream must have decreased the clearance in the wheel wells in recent single axle trailers, as you stated.

I am really disappointed, as I thought we might have the last of our tire troubles behind us. Now, we face more uncertainty as we become guinea pigs for Maxxis. Wish us luck -- we are probably going to need it. But, NO MORE MARATHONS!
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Old 10-09-2008, 03:36 PM   #120
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dont know if anyone has mentioned this yet as I didnt read the whole thread, but there was a really good video on u-tube (i think) w/20/20 about old tires & how Sears and other tire sellers have tires on their shelves that are over 8 to 12 yrs old & that any tire over 4-5 yrs old is a separation disaster waiting to happen. There is a number on the back side of tires (done in a way that most cant read) that tells when it was manufactured. I will try to see if I can find the video again & post how to see it for all concerned.
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Old 10-19-2008, 08:55 AM   #121
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Exclamation Not just cars like they talk about..Airstreams too!

Not just Marathons - several brands & sellers are mentioned in this clip.

how old are my "new" tires?

Sure supports the "change your tires every 4-6 years" and "know what you're buying" therories!

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Old 09-03-2009, 10:04 PM   #122
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Goodyear Marathons are scary! We just returned from a trip to the Black Hills of South Dakota (we live in CA) in our 2007 20' Safari. On the way up, a GM on our friend's trailer came apart (65 mph on Rt 15, outside temp 85°). On the way back, one of our GMs tore open so that there was a hole the size of a quarter just to the side of the tread (60 mph, rt 80, outside temp 80°). Inside the tire, it looked like the rubber had pulled away in several strange directions (even the tire guy was surprised). Fortunately, our Doran pressure meter gave us sufficient warning. To top it off, our partnering trailer blew another GM, this time, the tread coming completely off the tire, but he could ride what remained to a stop. I don't know if Michelin's are the answer, but clearly Goodyear Marathons are deadly. The Goodyears are coming off my trailer - and everyone in our WBCCI unit will learn about it. Can't imagine why Airstream mounts them on our trailers, let alone why no one at Goodyear cares!
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Old 09-04-2009, 04:30 AM   #123
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Doran PP gave early warning that our four year old Marathon, made in China, was losing pressure. As it turned out, the tread was separating. We made it to camp just fine but changed the tire prior to departure. We replaced all four tires this week with Carlisle "E" rated manufactured this year and kept the newest Marathon as a spare.We inflated the Carlisles to 75#, they're rated to 85#, and took out on our trip yesterday. Nothing inside the trailer seemed to be bounced around any more than with the Marathons inflated to 65#. We'll look for any unusual outer edge wear on the new tires due to the lower inflation pressures. Since our rig is a bit heavy anyway possibly there will be no difference.
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Old 09-04-2009, 06:19 AM   #124
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We just put new marathons on our old A/S recently and have had good luck so far. They have about 4000 miles. Our's are made in USA. Single Axle 70 Safari at around 4000 lbs. They sure ride nice compared to the old bias plys.
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Old 09-04-2009, 07:21 AM   #125
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After 4+ years and tens of thousands of miles, and a variety of road and weather conditions, we just changed out our original Canadian made Marathons with a set made in the U.S.A. The old ones were still in good condition. and showed only some tread wear, as could be expected. We have between 3-4,000 miles on the new set with no problems to date.
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Old 09-04-2009, 07:58 AM   #126
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Greetings from the Florida Panhandle

My experience with Lucy's OEM Goodyear Marathons within 12,000 miles is such that I won't be buying any Goodyear tire any time soon. Three of Lucy's OEM Marathons ended up as shown below. I am now on my second set of Maxxis without incident.

Maybe the new US Made Marathons are good, but I will have to see how they play out before I could trust Goodyear again.

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