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09-15-2021, 01:10 PM
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#1
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Senior Member
Join Date: Jul 2006
Location: Atlanta, GA
Posts: 282
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Aluminum Rim pitted
We just had some new tires put on our 2002 Monaco Executive and when they took the rubber off of the front Alcoa aluminum rims we got quite a surprise.
The rims on the inside edges were pitted to the extent you could fit your finger in some of the pits. The installer said some looked like they were just about thru the rim.
Had to buy two new rims.
Anyone seen or heard of this happening….or ideas on what causes this.
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09-15-2021, 01:48 PM
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#2
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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: 21,822
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Any pictures of this phenomenon?
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John & Cathy R.
06 Pace Arrow 38L Workhorse W24
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09-15-2021, 02:14 PM
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#3
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Senior Member
Join Date: Jul 2017
Location: Central Kalifornia
Posts: 588
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Very odd since aluminum does not rust but it could deteriorate. Picture would be great.
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Take me on and you take on the whole trailer park!
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09-15-2021, 06:16 PM
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#4
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,593
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Quote:
Originally Posted by Coarsegold
Very odd since aluminum does not rust but it could deteriorate. Picture would be great.
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Aluminum does corrode. That sounds like the tire had water inside for a long time.
reference: https://www.allmetalsfab.com/does-aluminum-rust/
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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09-15-2021, 08:36 PM
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#5
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Senior Member
Join Date: Jul 2006
Location: Atlanta, GA
Posts: 282
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What is the procedure for posting pictures on this form?
The pitting was in the area where the bead of the tire sits. The tech said that usually when they see this they buff it out but said that he’s never seen one this bad especially under the bead.
Some of the pits were as big as your little finger and some were almost thru the rim.
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09-15-2021, 10:40 PM
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#6
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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: 21,822
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Quote:
Originally Posted by grldst
What is the procedure for posting pictures on this form?
The pitting was in the area where the bead of the tire sits. The tech said that usually when they see this they buff it out but said that he’s never seen one this bad especially under the bead.
Some of the pits were as big as your little finger and some were almost thru the rim.
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Check reply #7 in the link below, the thread also offers other helpful information for navigating the forums
https://www.irv2.com/forums/f62/foru...ics-49134.html
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John & Cathy R.
06 Pace Arrow 38L Workhorse W24
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09-16-2021, 08:10 AM
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#7
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Senior Member
Join Date: Jul 2006
Location: Atlanta, GA
Posts: 282
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09-16-2021, 08:31 AM
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#8
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,519
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I've never heard of plain water corroding aluminum, but aluminum is a soft metal and any sort of chemical in the water can eat away at it. I could conjecture how that might happen, e.g. somebody used an ersatz balancing bead or fluid inside the tire.
I had chrome wheels on a 2014 Buick that corroded like that along the bead. About once a year a tire would develop a slow leak and had to be dismounted and the bead area sanded smooth to get a tight seal.
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Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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09-16-2021, 11:15 AM
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#9
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Senior Member
Join Date: Jul 2006
Location: Atlanta, GA
Posts: 282
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There was no sign of moisture or balancing beads when tire was dismounted. however it is a 20 yr old motor home that was bought used. Low mileage, 23,000 miles when purchased 7 Yrs ago. Now has 70,000. One of the tires on the pitted rim was loosing slight air pressure.
We wonder if sometime during its life span someone used the wrong type of lubricant/soap when mounting the tires.
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09-16-2021, 03:11 PM
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#10
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: Tucson, AZ
Posts: 6,544
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For what it's worth, a Monaco Executive should have come with 8.25 X22.5" Accuride aluminum wheels.
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97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
04 Monaco Signature Chateau IV
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09-16-2021, 06:09 PM
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#11
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 9,867
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grldst,
First off, are those pics, pics of your wheels? If so, I don't see any holes the size of a small finger tip, unless I'm blind which could be. Second, yes, aluminum DOES corrode, just like steel rusts. But, the conditions must be there for corrosion to take place. In other words, AIR must be present, along with other corrosive chemicals like salt etc. If the holes are where you say, the bead of the tires should basically seal the area from air and even intrusive chemicals, from both the inside and outside.
But, the fact is that you do have some corrosion there. But, based on the pics I see, a correct size flap sanding wheel along with some WD-40 (as a lubricant to carry away sanding residue and particles) would have cleaned up at least what I see in the pics. Maybe not to brand new specs but, good enough to install new tires. But again, based on what I see, it doesn't look that bad.
But, if you've already bought new wheels then, you're good to go. Good luck.
Scott
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09-17-2021, 06:22 AM
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#12
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Senior Member
Join Date: Aug 2021
Location: Maine
Posts: 327
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I can't see the deep pits wither. It looks kinda normal to me.
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1986 Itasca Sunflyer 22 ft P32 chassis with 454 engine
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09-19-2021, 01:36 PM
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#13
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,593
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Quote:
Originally Posted by grldst
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To me the pictures appear to show unusual wear from underinflation causing the tire bead to squirm on rim sealing surface instead of corrosion.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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