Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-29-2013, 10:46 AM   #1
1 Rivet Member
 
1985 25' Sovereign
Johnson City , New York
Join Date: May 2013
Posts: 5
Problem with unusual tire wear

I have a 25 ft 1985 airstream. I have four Good Year Marathon 15" load range D tires with 30,000 miles. I Keep them inflated at 60 to 65 psi. All tires were of the same date code, just under 6 years old. Three of the tires wore evenly and one curbside tire had very bad wear on both inside and outside edges. It looked like an indication of extreme under inflation, but the pressure was the same on all four tires. The tire was inspected by several "experts" at the tire dealer with no plausable reason given. No ply seperation was evident. I have a shop manual for the trailer and none of the tire wear symptons match. I don't think I have a bent axle or an alignment problem. A fellow Airstreamer thought it might be a bad shock. Does that make sense? Any thoughts will be appreciated. Hockey from upstate NY.
__________________

__________________
Hockey is offline   Reply With Quote
Old 05-29-2013, 12:20 PM   #2
Rivet Master
 
SteveH's Avatar
 
2005 39' Land Yacht 390 XL 396
Common Sense , Texas
Join Date: Sep 2007
Posts: 5,311
Have you checked the bearing adjustment? The obvious things that cause tire wear, besides alignment, you have already checked, or eliminated. I doubt a bad shock would cause that type of wear. A picture of the thread would help us help you troubleshoot.

Welcome to the forum.
__________________

__________________
Regards,
Steve
SteveH is offline   Reply With Quote
Old 05-29-2013, 02:39 PM   #3
Rivet Master
 
AirsDream's Avatar
 
1999 23' Safari
Perrysburg , Ann Arbor
Join Date: Sep 2005
Posts: 914
Hard to tell without seeing photos, but a loose bearing can cause odd wear ... if it's real loose. Your description does sound like underinflation ... and you sound like you monitor things well. Was there a previous owner who may have let one tire get way low and overheated just once or twice and you're now seeing the result?

I'd also consider that your tires are about due for replacement, not due to miles but due to their age. And you might also be due for new axles ... unless they've been replaced somewhere along the line; the rubber might be hard and have a set, giving a hard ride and requiring more road compliance from the tires than intended. However, this would give you a hard ride and tend to bounce things around inside the trailer and likely cause all the tires to wear the same.
__________________
AirsDream is offline   Reply With Quote
Old 05-29-2013, 07:49 PM   #4
1 Rivet Member
 
1985 25' Sovereign
Johnson City , New York
Join Date: May 2013
Posts: 5
Thanks for your replies. I did notice when I was checking the brakes on that wheel, that the bearing was a bit loose, but it did not seem excessive. I do not have the tire any more, as I left it when I bought new tires without taking any pics. The tire was not under inflated. The wear was even on both inner and outer edges, (down to a dangerous level) and the center had wear equivalent to the thread wear on the other three tires. The trailer has original axles without any refurbishment done. I am the second owner and I doubt the trailer has more than 60K miles on it. Regards, Hockey
__________________
Hockey is offline   Reply With Quote
Old 05-30-2013, 04:44 AM   #5
CapriRacer
 
CapriRacer's Avatar
 
I'm in the , US
Join Date: Sep 2012
Posts: 624
Quote:
Originally Posted by Hockey View Post
I have a 25 ft 1985 airstream. I have four Good Year Marathon 15" load range D tires with 30,000 miles. I Keep them inflated at 60 to 65 psi. All tires were of the same date code, just under 6 years old. Three of the tires wore evenly and one curbside tire had very bad wear on both inside and outside edges. It looked like an indication of extreme under inflation, but the pressure was the same on all four tires. The tire was inspected by several "experts" at the tire dealer with no plausable reason given. No ply seperation was evident. I have a shop manual for the trailer and none of the tire wear symptons match. I don't think I have a bent axle or an alignment problem. A fellow Airstreamer thought it might be a bad shock. Does that make sense? Any thoughts will be appreciated. Hockey from upstate NY.
Without a photo, it would be hard to tell with just the info provided.

But given that you have 6 year old tires, it is quite possible that the tire was separated and the "experts" didn't recognize the wear pattern as a symptom. I've seen otherwise knowledgeable people mis-read these things.
__________________
CapriRacer is offline   Reply With Quote
Old 09-19-2013, 06:06 AM   #6
3 Rivet Member
 
Snaken49's Avatar
 
2010 28' Flying Cloud
Fort Worth , Texas
Join Date: Jun 2009
Posts: 133
Exclamation GYM Belt Separation

I suspect you have what is known as "classic" GYM belt separation. I'm attaching a pic of a 3 year old rear roadside tire showing the unusual scalloped wear pattern. The tire actually has three other spots with the same wear. All of the other tires displayed normal wear.

This is an OEM installed tire on my 2010 28' Safari. There is no play other defects with the axle or bearings etc. The local Goodyear dealer admitted that it was caused by belt separation and offered to prorate a set of tires. I said NO thanks!

I discovered this yesterday while doing an inspection. Kudos to all the folks who have posted in this forum about GYM failure. You saved me costly problems!

Replacing my GYM today with Michelin LTX tires at Discount Tire.

My thanks again to Air Forums and all those who post!
Attached Thumbnails
Click image for larger version

Name:	GYM.JPG
Views:	123
Size:	359.9 KB
ID:	195946  
__________________
Old Cobra AH-1G Pilot

WoundedWarriorsFamilySupport.Org
http://www.highfivetour.com/
Snaken49 is offline   Reply With Quote
Old 10-26-2016, 07:12 AM   #7
Rivet Master
 
tjdonahoe's Avatar
 
2013 31' Classic
billings , Montana
Join Date: Feb 2010
Posts: 1,843
30,000 miles and 6 years old, them babies would be gone and new installed, you are stretching it, if one blows you might have a damaged airstream, not worth it..on my big truck ,the 6 super singles onthe trailer, 2 would wear fast, 2 wouldn't wear out ,2 would develop abnormal wear, it didn't make any difference where they were located...
__________________
tjdonahoe is offline   Reply With Quote
Old 10-26-2016, 10:13 AM   #8
Rivet Master
 
HowieE's Avatar
 
1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,811
Images: 12
Quote:
Originally Posted by Snaken49 View Post
I suspect you have what is known as "classic" GYM belt separation. I'm attaching a pic of a 3 year old rear roadside tire showing the unusual scalloped wear pattern. The tire actually has three other spots with the same wear. All of the other tires displayed normal wear.

This is an OEM installed tire on my 2010 28' Safari. There is no play other defects with the axle or bearings etc. The local Goodyear dealer admitted that it was caused by belt separation and offered to prorate a set of tires. I said NO thanks!

I discovered this yesterday while doing an inspection. Kudos to all the folks who have posted in this forum about GYM failure. You saved me costly problems!

Replacing my GYM today with Michelin LTX tires at Discount Tire.

My thanks again to Air Forums and all those who post!
Before you acquire many miles on your new tires check the alignment of that axle. Take a straight edge, 8 ft. florescent light bulb or 3/4 in. EMT pipe across the center line of the tires. It should touch all edges of the tires. I suspect the trailing edge of the tire position posted will not touch the straight edge.
__________________

__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:19 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.