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10-10-2016, 05:46 PM
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#1
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Senior Member
Newmar Owners Club
Join Date: Apr 2016
Location: Carefree, AZ
Posts: 620
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Tire damage on tag
Any idea what caused this tire damage on my DSDP 4018 tag? It's on the passenger side.   I only have 7,500 miles on the coach
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Juergen & Margit
2016 Newmar DS 4018
2016 Jeep GC Limited 
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10-10-2016, 05:48 PM
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#2
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Senior Member
American Coach Owners Club
Join Date: Jan 2011
Posts: 2,742
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Inflation !
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Chuck
Brownsburg Indiana
1992 American Eagle-8.3C-450hp
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10-10-2016, 06:07 PM
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#3
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,442
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If the wear on the inside edge of the tire is the same , I'll say under-inflation too.
If the inside isn't worn , then tag axle camber or toe in, alignment required.
If the outer edge of the drivers side tag tire has similar wear, then toe in , or just being on the tag , can be a factor .
You have to stop half way through a right angle corner and look at what happens to the tire to see how the wear occurs; in a sharp corner the tire is being dragged sideways
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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10-10-2016, 07:07 PM
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#4
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Senior Member
Join Date: Nov 2007
Location: Charleston, WV
Posts: 3,469
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Could be scrubbing due to making tight turns without dumping the tag suspension air.
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John and Mary Knight
2015 Newmar Ventana 4311 - wheelchair accessible
2015 Cadillac SRX Luxury AWD
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10-10-2016, 08:11 PM
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#5
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Senior Member
Country Coach Owners Club Newmar Owners Club Freightliner Owners Club
Join Date: Apr 2013
Location: Portland
Posts: 278
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I have about the same miles on my Michelin tires and coach. I put half of them on and the dealer put the other half on the odometer. I mostly remember to dump the tag axle. I assume the dealer did as well... to show off the tag dump feature. My tag tires look pretty good compared to this photo. Hope this data point helps.
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2015 Newmar Dutch Star 4366 pulling a 2014 Dodge Ram Truck
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10-10-2016, 08:22 PM
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#6
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Senior Member
Newmar Owners Club
Join Date: Apr 2016
Location: Carefree, AZ
Posts: 620
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It is certainly not under inflation. I had the coach weighted and if anything I'm running the tag a little bit higher than the Michelin table says.
I think it is indeed damage from not dumping the tag when going around tight corners. I guess I have to make a habit of dumping the air in those tags. I will take a closer look based on the replies tomorrow and will report back ( I have not looked at all at the inside of that tire).
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Juergen & Margit
2016 Newmar DS 4018
2016 Jeep GC Limited
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10-11-2016, 02:37 PM
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#7
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Senior Member
Freightliner Owners Club
Join Date: Aug 2005
Location: Chicagoland
Posts: 715
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X2 Skip426 , looks like bad alignment to me.
Siggy
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Siggy & Ursula.
2011 Newmar DSDP 4020 , (No DEF, 07 emission),
FTL XCR Chassis , Cummins ISL 400 HP
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10-11-2016, 03:51 PM
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#8
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Jul 2011
Posts: 1,173
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Quote:
Originally Posted by Carefree
It is certainly not under inflation. I had the coach weighted and if anything I'm running the tag a little bit higher than the Michelin table says.
I think it is indeed damage from not dumping the tag when going around tight corners. I guess I have to make a habit of dumping the air in those tags. I will take a closer look based on the replies tomorrow and will report back ( I have not looked at all at the inside of that tire).
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Why dump the tag, unless your in reverse? I believe you have a 2016 and have Freightliners UltraSteer. With UltraSteer those tag tires should be turning (opposite of your steer tires) whenever you are making a low speed turn. If the UltraSteer is not working correctly, and not unlocking the axles I agree you would be dragging those tag tires.
Mike
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NHSO
2021 DSDP 4081
2016 DSDP 4369
2012 DSDP 3734
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10-11-2016, 04:39 PM
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#9
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Senior Member
Newmar Owners Club
Join Date: Apr 2016
Location: Carefree, AZ
Posts: 620
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The inside of that tire looks perfectly normal - no damage.
The coach will be at Freighliner next week for the air bag and wheel upgrade. I will ask them what they think could cause the damage. Yes. my tag axle steers and it SHOULD dump when in reverse. I will report back after I get the coach back by the end of next week.
Thanks for everybody's help.
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Juergen & Margit
2016 Newmar DS 4018
2016 Jeep GC Limited
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10-11-2016, 05:00 PM
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#10
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Senior Member
Join Date: Mar 2014
Posts: 1,459
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How does the tire on the other side look? If it is scuffing you would think it both sides would exhibit something similar? Might also send the photos to Michelin for comment or stop by a Michelin truck tire dealer. Maybe a bad tire?
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Gary 2021 NH Majestic
Ram 5500 with Bodywerks bed
Box Elder, SD and the road
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10-13-2016, 12:36 PM
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#11
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Senior Member
Newmar Owners Club
Join Date: Apr 2016
Location: Carefree, AZ
Posts: 620
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I figured out why my tire was damaged - even before I talked to Freightliner. My tag never dumped the air, even when I was backing up. At the RV storage facility I need to make some very sharp turns to get into our assigned space. With the tag bag fully inflated, the tag and tire were dragging badly.
I never understood that stupid switch on the 2016 DSDPs. In a thread here in the Newmar forum someone asked about the proper settings for the tag. That's what got my attention. I now have it set, so that the tag dumps the air when in reverse, but not during slow forward movement - mainly because the tag steers when moving forward.
Thanks to everyone for helping me understand what was going on.
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Juergen & Margit
2016 Newmar DS 4018
2016 Jeep GC Limited
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10-13-2016, 01:05 PM
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#12
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Community Administrator
Fleetwood Owners Club Workhorse Chassis Owner
Join Date: Sep 2010
Location: Marquette, Michigan "Da UP" & Lehigh Acres Florida
Posts: 21,827
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Thank you for the update they are important for those who may do a search of the subject in the future.
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John & Cathy R.
06 Pace Arrow 38L Workhorse W24
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10-13-2016, 01:25 PM
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#13
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Senior Member
Join Date: Mar 2014
Posts: 1,459
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__________________
Gary 2021 NH Majestic
Ram 5500 with Bodywerks bed
Box Elder, SD and the road
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10-13-2016, 01:30 PM
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#14
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Senior Member
Newmar Owners Club
Join Date: Apr 2016
Location: Carefree, AZ
Posts: 620
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Quote:
Originally Posted by ghaynes754
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Thank you, yes it is that thread.
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Juergen & Margit
2016 Newmar DS 4018
2016 Jeep GC Limited
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