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Old 06-03-2016, 07:43 PM   #1
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New Michelin 15" Tires

After much research and deliberation I finally replaced the GYM tires on my '09 International. I decided not to go with the 16" replacement wheels and stayed with the original 15" wheels. I purchased the Michelin LTX M/S2 (P)235/75R15 108T tires. Based on the experience of others on the forum and the weight of my 25FB I am confident that I made a good choice, for me. I had them inflated to 44 psi as was recommended.

My GYM tires were over four years old and, while the tread looked good, I just didn't want to risk a tread separation or blowout and all the issues these may cause.

I guess time will tell if my confidence in these tires was well founded.
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Old 06-03-2016, 07:59 PM   #2
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I replaced the almost new 2016 GYM's on my 25ft AS with Maxxis E rated 10 ply tires. I just couldent get comfortable with a C rated tire but honestly I've never heard any negetives about the Michelin 15 inch tires.
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Old 06-03-2016, 09:15 PM   #3
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I've fooled around with Porsches for many years and I can't think of a brand I have more trust in than Michelin. Near the top of my todo list is replacing my no-name tires with Michelin LT's. I've read many of the countless tire threads (threads?) here and I'm stumped as to why some see the need to switch to 16" wheels. Am I missing something?

What do you think of these?

http://www.tirerack.com/tires/tires....omCompare1=yes

Cheers,
John
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Old 06-03-2016, 10:24 PM   #4
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Quote:
Originally Posted by John&Vicki View Post
I've fooled around with Porsches for many years and I can't think of a brand I have more trust in than Michelin. Near the top of my todo list is replacing my no-name tires with Michelin LT's. I've read many of the countless tire threads (threads?) here and I'm stumped as to why some see the need to switch to 16" wheels. Am I missing something?

What do you think of these?

http://www.tirerack.com/tires/tires....omCompare1=yes

Cheers,
John

That's the tire I use on my 2012 27FB Flying Cloud. As a "P" rated tire, you have to divide its capacity (2184#) by 1.1 when using on a trailer which means each tire carries 1985#.

I assume your trailer is in the 5000# range and a double axle, yes? If so, you'd have 7940# capacity and nearly a ton and a half head room. My trailer axles see (on the scales) 6000# fully loaded for camping so I have almost 25% headroom using these 15" tires even at their de-rated load capacity. I'm very happy with them. (Side note, I went with the white lettering facing out because it looks awesome &#128512. I just replaced my truck's 20" LT tires with Michelins - very happy with the entire setup.

Some go to the 16" LT Michelins because their trailers are heavier (perhaps slide models or hickory cabinets, etc.). That tire carries near 3000# if I'm not mistaken leaving much more "head room" than would be available on the 15" version.
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Old 06-04-2016, 02:45 AM   #5
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While I love Michelin tires I dont understand why everyone puts them under there AS. Personally I use Carlisle tires under my trailers my st225/75R15 radial hd tires have a load rating of 2830lbs per tire and are made specifically to be used on a trailer. Please dont take this the wrong way im just trying to understand the reason for putting a non trailer tire under your trailer.
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Old 06-04-2016, 05:22 AM   #6
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New Michelin 15" Tires

Quote:
Originally Posted by SpletKay06 View Post
While I love Michelin tires I dont understand why everyone puts them under there AS. Personally I use Carlisle tires under my trailers my st225/75R15 radial hd tires have a load rating of 2830lbs per tire and are made specifically to be used on a trailer. Please dont take this the wrong way im just trying to understand the reason for putting a non trailer tire under your trailer.

I can only speak for myself. I have to admit - I read so many horror stories about GYMs here, I swapped mine out for Michelins after just a few trips. The fact that Airstream is using the 16" LT version on even more trailers now suggests there's something to be gained in the swap. I fully realize the 15s are not LT tires (like AS puts on the Pendleton) or ST (like the GYMs), but for my trailer, they have more than enough load capacity and with my internal TPMS I can see they never rise more than 30* above ambient or 10% above cold pressure so they're doing quite well on the job.

At about 1.5x the cost of the GYMs, for me, it's been worth the peace of mind.

Everyone's mileage can and should vary. Happy camping! 😀
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Old 06-04-2016, 06:56 AM   #7
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At least you have a choice. I've got a 23FB that still has the original GYM tires. They are 14"! I can't find an alternative.
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Old 06-04-2016, 06:58 AM   #8
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At least you have a choice. I've got a 23FB that still has the original GYM tires. They are 14"! I can't find an alternative.
Find someone who is upgrading to 16" and buy their 15". You can usually get them for a good price.
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Old 06-04-2016, 07:45 AM   #9
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GettinAway - I'm not sure how much clearance you have in your wheel wells but if you wanted to make a change, you might want to investigate upgrading to 15" wheels and perhaps think about the Goodyear G26 Cargo tire - it's a bit shorter than the Michelin and carries about 2500# if I remember correctly. I was going to get a set of those to more closely match the original capacity of the GYMs but I didn't want to do hitch adjustments 😕
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Old 06-04-2016, 10:31 AM   #10
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Quote:
Originally Posted by SpletKay06 View Post
While I love Michelin tires I dont understand why everyone puts them under there AS. Personally I use Carlisle tires under my trailers my st225/75R15 radial hd tires have a load rating of 2830lbs per tire and are made specifically to be used on a trailer. Please dont take this the wrong way im just trying to understand the reason for putting a non trailer tire under your trailer.
My understanding from having spent way too much time here reading about tires is that LT tires are built for vehicles that carry passengers and ST tires are built for vehicles that don't carry passengers and so LT tires are more heavily regulated and therefore of higher quality. And quality pertains to safety as tires don't really suffer "blow outs", they simply separate and disintegrate.

Maybe it's another thing in the belt and suspenders category that we encounter here so often. But for me Michelins will have at least a placebo effect - they will remove any anxiety I have over tire failure.

John
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Old 06-04-2016, 12:00 PM   #11
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The irony is gym tires are junk just like most goodyear products. That does not meen that all St tires are junk. The duratrac is a good tire but thats about it. Yes Lt tires can work great but there deisgned to put foraward traction down and a trailer tire does not need to do that. With my Carlisle Hd radials I get very little pressure increase and there barely warm to the touch after doing 70 mph on the freeway.
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Old 06-04-2016, 12:01 PM   #12
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I am with Spletkay. I put the same tires (Carlisle ST225/75R15) on my 2012 FC. They are E Rated tires and made by the company that makes trailer tires.

I also changed my F150 Crew Cab Michelins to LT275/65R18 which is also an E rated tire (just a little wider than what it came with).


All 8 tires are MAX 80 PSI and I have them inflated to 76 PSI.
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Old 06-04-2016, 12:36 PM   #13
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I replaced the almost new 2016 GYM's on my 25ft AS with Maxxis E rated 10 ply tires. I just couldent get comfortable with a C rated tire but honestly I've never heard any negetives about the Michelin 15 inch tires.

The Michelin 108 T described above are Extra Load tires. At 50 PSI they are rated as a D 8 ply and at 80 PSI as E 10 PLY.
I have the same tires on my 30' International.
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Old 06-04-2016, 01:03 PM   #14
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Quote:
Originally Posted by SpletKay06 View Post
While I love Michelin tires I dont understand why everyone puts them under there AS. Personally I use Carlisle tires under my trailers my st225/75R15 radial hd tires have a load rating of 2830lbs per tire and are made specifically to be used on a trailer. Please dont take this the wrong way im just trying to understand the reason for putting a non trailer tire under your trailer.
My Carlisle tires had thread separation 9 months old (tires were on the AS when purchased from a dealer). Blowout, damage to underbelly belly wrap. I must admit that Carlisle stood behind their tire. They requested me to return one of the other tires. I was sent a UPS printed label, within a short time based on the receipt for which I bought the replacements, they sent me a check in full. I commend them for their service and attention in this matter. I did have to do the repair to the AS myself. Bummer. I have heard good things about the Michelin, so they are now my choice for now. So far 10,000 miles, AOK!
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