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Topic: New Michelin Tires (Read 2012 times) previous topic - next topic

Re: New Micheline Tires

Reply #25 –
It's amazing how tired pressure affects the ride.
I'm not sure what pressure my John Deere tires are at but I don't dare make them too high as the ride would be too rough.
Our lawn is bumpy as it is

Rick & MJ Berry
1998 U320 40'
Ohio

Re: New Micheline Tires

Reply #26 –
Quote from: bigdog –
The Michelin chart shows the H rated X-line as supporting 12,380Lbs @ 100PSI this is over the DOT max allowable for a steer axle.

Jerry can you please elaborate on........................."over the DOT max allowable for a steer axle?"

Re: New Micheline Tires

Reply #27 –
Here's my X line Energy Z tire after 3,000 miles and exactly (to the day) one year.  This happened on the I-5 must south of Sacramento and no road hazard.  Photo is worth a lot of words, but have to add that my experience with the company was miserable.  I wrote about this extensively in June, 2017.  I will never buy Michelin (rv or car) again.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: New Micheline Tires

Reply #28 –
Rare failure hopefully.  All tires in the industry as far as I know are run on a machine at double pressure and high speed under a load.  At least that's what I remember from a conversation with a Michelin engineer. 
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: New Micheline Tires

Reply #29 –
Quote from: Caflashbob –
Rare failure hopefully.  All tires in the industry as far as I know are run on a machine at double pressure and high speed under a load.  At least that's what I remember from a conversation with a Michelin engineer.
Since I'm stuck with them, I hope so.  These tires were in the same lot (presumably) and I'm constantly concerned about a repeat.  This caused a lot of damage to the wheel well and exterior skin.  If I recall, about $6000 worth.  Michelin would not take responsibly and I turned it over to my insurance company.  They also insisted that I take the tire with me on the rest of my trip and then send it to them from my home.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: New Michelin Tires

Reply #30 –
Quote from: Travelin' Man –
Jerry can you please elaborate on........................."over the DOT max allowable for a steer axle?"
I should clarify that is the rule of thumb on class 8 trucks for permitted 80K max load that I was used to using.  thus trailer tandems 34K tractor tandem 34K which leaves 12K for the steer = 80K.  One can obtain permits for higher than 80K loads as long as one stays within bridge formula ratings.

Upon double checking. I see that our 1998 U320 is 12,350 steer and 20,000 drive.

If one wants to become very confused. Start looking into the weight ratings laws. IF you have a steer axle and tires that are rated to support it. You are actually allowed to carry 20K on a steer axle.
Jerry & Nona and Kimeru the cat that thinks she's a dog
1998 36' WTFE U320  #5314 Motorcade #17711
USAF 1975-1995
2019 Subaru Crosstrek 'toad'
2003 Subaru Legacy touring car
jerry Fincher | Flickr

Re: New Michelin Tires

Reply #31 –
Quote from: Sven and Kristi –
Since I'm stuck with them, I hope so.  These tires were in the same lot (presumably) and I'm constantly concerned about a repeat.  This caused a lot of damage to the wheel well and exterior skin.  If I recall, about $6000 worth.  Michelin would not take responsibly and I turned it over to my insurance company.  They also insisted that I take the tire with me on the rest of my trip and then send it to them from my home.

Brett Wolfe asked me to look at the picture.  Did you ever get a resolution from Michelin? Did you file a complaint with NHTSA?
Very unusual. I am guessing a problem in MFG but would need closer examination.
Retired tire design and quality engineer with 40 years experience. Gives seminars on tires at RV conventions.
Write a blog on RV tire application
 Tire expert on FMCA Technical Advisory Committee

Re: New Michelin Tires

Reply #32 –
The Michelin dealer (30+ years experience) in Sacramento looked at it and determined that it was a defect and this was later corroborated by the area rep.  After Michelin received the tire, they said it was due to a cut, which is visible on the adjacent rib.  We had seen that, but the dealership manager dismissed that as a cause.  I did receive a partial refund on tire from the dealer and had to turn to my insurance to get the body work done.  Progressive took all my information and documentation and felt that they could file a claim with Michelin.  I was not informed of the result.  If you search "Michelin tire failure" you should see the thread I started in June '17.  I didn't mean to open up the whole subject again, and I'm not usually the vindictive type, but I wanted to warn others and give my opinion.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: New Michelin Tires

Reply #33 –
A cut would help explain how a heavily tested tire might fail.  The Michelin engineer on the phone mentioned every tire from all brands  in the industry are individually tested on the same $80k machines at up to double pressure and heavily loaded and run way over speed at the same time.  As far as I understood what he was saying every tire is tested the same way on the same machines.  Would seem to help catch defective tires?



"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4
 

Re: New Michelin Tires

Reply #34 –
In an early life I hauled truck tires from several manufacturers directly from the tire plants. Stood in the plants and watched them made. They may test a representative sample of a manufacture lot run, but not every tire. If every tire was inflated x2 and overspeed and over loaded. I certainly would not want that tire. Just sayin.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country