Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-11-2020, 10:54 PM   #1
3 Rivet Member
 
Hawk-ination's Avatar
 
2014 Interstate Ext. Coach
Cedar Rapids , Iowa
Join Date: Oct 2018
Posts: 158
Front driver outer tire wear

Having major front driver side outer tire wear. Have seen online it was mentioned this is a problem on the MB Sprinter. Anyone else have this issue and know what the cause is? Sorry if this is a revisit, the search doesnít seem to work on the iphone.
__________________

Hawk-ination is offline   Reply With Quote
Old 07-12-2020, 12:51 AM   #2
Rivet Master
 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 13,679
Needs a front end alignment or camber adjustment?

Was the vehicle ever in a front-end accident, or hit a major pothole/curb/etc.?

Check the various Sprinter forums maybe.

The search function in the App is not that great apparently -- these search results may help:

https://www.google.com/search?q=Spri...=airforums.com

Good luck,
__________________

__________________
Peter
OTRA15 is online now   Reply With Quote
Old 07-12-2020, 12:56 AM   #3
3 Rivet Member
 
Hawk-ination's Avatar
 
2014 Interstate Ext. Coach
Cedar Rapids , Iowa
Join Date: Oct 2018
Posts: 158
Takes a heavy duty rack so will have to get it into a different shop than our MB dealer. Iíd guess thatís the problem, maybe a camber issue but must be something to it. Saw it in a different forum but they didnít mention the cause.
Hawk-ination is offline   Reply With Quote
Old 07-12-2020, 12:59 AM   #4
Rivet Master
 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 13,679
[Please see edited post incl AF search results]
__________________
Peter
OTRA15 is online now   Reply With Quote
Old 07-12-2020, 01:34 PM   #5
4 Rivet Member
 
Life is a Highway's Avatar

 
2019 25' Flying Cloud
Lady Lake , Florida
Join Date: Mar 2018
Posts: 331
Toe

Camber would have to be so far out you could see it 15 feet back look at the top of the tire out is positive in is negative

Most likely a toe scrub from the additional RV construction weight and your added carry items weight

Has to be up on a alignment rack with a Tech that can adjust camber and or toe. Not only adjust but when done recalibrate the pitch yaw sensor. Takes a scan tool
Life is a Highway is offline   Reply With Quote
Old 07-12-2020, 04:49 PM   #6
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 3,338
Quote:
Originally Posted by Hawk-ination View Post
Having major front driver side outer tire wear. Have seen online it was mentioned this is a problem on the MB Sprinter. Anyone else have this issue and know what the cause is? Sorry if this is a revisit, the search doesnít seem to work on the iphone.
This is a very common problem associated with front end not aligned properly. Sprinter front alignment must be set at dominate weight load for optimum tire wear. The Sprinter alignment is set at factory when van is empty - then Airstream fills it to near max weight and does not realign the front end. Some RV manufacturers, like LTV, Advanced RV and Tiffin do a realignment after their builds.
__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 07-13-2020, 05:41 AM   #7
3 Rivet Member
 
Hawk-ination's Avatar
 
2014 Interstate Ext. Coach
Cedar Rapids , Iowa
Join Date: Oct 2018
Posts: 158
Thank you Boxter. I forget the urge to blame the owner for various reasons...
It sometimes seems if some havenít run across the issue they think itís the ownerís fault. Being in the automotive aftermarket, I forget that people donít realize that some flaws are built into vehicles and parts and just need to be solved.

Iíve had to solve some various problems on vehicles and this Interstate for the techs so itís just nice to have an idea of where to go with it before we start. Not every shop has a heavy duty alignment rack so Iíd rather get it to the right place before we start.

Just FYI, it wasnít overloaded because we bought it late last year and were unable to camp at that time due to our fall season and some other reasons so it was empty most of the time the wear occurred. Throw that theory out the window. Thanks for pointing me in the right direction, I assumed that was the problem but Google was not helping this time.
Hawk-ination is offline   Reply With Quote
Old 07-13-2020, 05:50 AM   #8
Rivet Master
 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 13,679
You may have misinterpreted his post IMO -- by "empty" he means this:

Quote:
Originally Posted by Boxster1971 View Post
. . .
The Sprinter alignment is set at factory when van is empty . . .
. . .
. . . that is . . . a completely empty Sprinter van, when it leaves the Mercedes factory, before AS puts anything inside. [IMO]
__________________
Peter
OTRA15 is online now   Reply With Quote
Old 07-13-2020, 07:28 AM   #9
3 Rivet Member
 
Hawk-ination's Avatar
 
2014 Interstate Ext. Coach
Cedar Rapids , Iowa
Join Date: Oct 2018
Posts: 158
No, I didnít interpret it wrong. Your assuming Iím responding to Boxterís post totally in my response and I was not, my apologies for confusing that.

Iím not referring to his post, referring to one that inferred we were overweight. Just communicating so anyone else wanting to contribute doesnít think that was the problem. We were not loaded most of last fall and actually most of this spring. Happened between that time.

I was looking for actual MB Sprinter owners that have had this issue and had to correct it I guess, not really grasping at straws what might be the problem is all. Itís costly and wastes time to guess when itís a problem some have already ran into. Might as well try to dial it in. These are just not that easy to work on for shops because they are too big (heavy) and tall for most regular shops/hoists, and our MB dealer already said they donít have an alignment rack heavy duty enough if thatís what the problem was. I have to take it to a shop that has the capability to fix it and if anyone had the answer as to what is going on, I was headed that direction. Going to make the appointment this week thanks to knowing it is the alignment more than likely as I thought. Just one of those issues that seems to be something to keep an eye on, just like the wheel sensor that is prone to fail on the MB Sprinter. It has some issues, you just deal with it. Just good to be pointed in the right direction.
Hawk-ination is offline   Reply With Quote
Old 07-13-2020, 10:00 AM   #10
2 Rivet Member
 
LoveToWander's Avatar
 
2016 Interstate Grand Tour Ext
Seattle , Washington
Join Date: Nov 2015
Posts: 73
Quote:
Originally Posted by Boxster1971 View Post
This is a very common problem associated with front end not aligned properly. Sprinter front alignment must be set at dominate weight load for optimum tire wear. The Sprinter alignment is set at factory when van is empty - then Airstream fills it to near max weight and does not realign the front end. Some RV manufacturers, like LTV, Advanced RV and Tiffin do a realignment after their builds.
I just had the alignment done last fall for the reasons mentioned about. The only difference is that when Airstream loads the vans without the re-alignment, it's sometimes because the alignment has reached the end of the adjustment range. At the MB sprinter shop they added some kind of mod kit that allowed for proper alignment and the tires have stopped rubbing the outsides off. Money well spent considering the price of tires. Expect 600 to 700.
__________________
2016 Interstate GT Twin
LoveToWander is offline   Reply With Quote
Old 07-13-2020, 01:22 PM   #11
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 3,338
Quote:
Originally Posted by OTRA15 View Post
You may have misinterpreted his post IMO -- by "empty" he means this:


. . . that is . . . a completely empty Sprinter van, when it leaves the Mercedes factory, before AS puts anything inside. [IMO]
Yes - the van leaves the Mercedes factory empty and leaves the Airstream plant nearly full.
__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 07-13-2020, 01:25 PM   #12
Rivet Master
 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 13,679
Thumbs up

Roughly how much added weight would that be?

__________________
Peter
OTRA15 is online now   Reply With Quote
Old 07-13-2020, 06:30 PM   #13
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 3,338
Quote:
Originally Posted by OTRA15 View Post
Roughly how much added weight would that be?

Of course that depends on the specific configuration. I just ran a worst case example that indicates Airstream adds over 3,500 lbs to a 2020 Sprinter 3500XD to convert a 2021 Interstate 24GT 4x4 with air suspension and leveling jacks.

According to the Mercedes 2020 Sprinter build page an empty Sprinter 3500XD 4x4 weighs 6,129 lbs. That would be the GVWR of 11,030 less the payload capacity shown on the build page as 4,901 (11030-4901=6129).

The Airstream 2021 Interstate 24GT 4x4 with air suspension and leveling jacks has a UBW of 9,690 lbs. Unit Base Weight (UBW) is the dry weight of the base unit without options. Thus 9690-6129=3561, the weight added by Airstream for the conversion.

That leaves the owner 1,340 lbs of OCCC (Occupant Cargo Carrying Capacity) for fuel, people, water, propane, food, clothing and other gear. FYI full propane is ~60 lbs, full water is ~224 lbs, full fuel is ~171. That leaves less than 900 lbs for people, food clothing and other gear.

Iíve had my Interstate weighed at a RVSEF event when fully loaded with two people. Iím about 300 lbs under my GVWR of 11,030 lbs.
__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 07-14-2020, 01:55 AM   #14
Rivet Master
 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 13,679
Great Mike, thanks.

So, for the sake of discussion, splitting that 3,500 lbs. of added weight into roughly:
-- 1,500 on the front
-- 2,000 on the rear

. . . means that each of the L/R front suspension assemblies has to handle about 750 pounds of added load -- without any further front end camber etc. adjustments.

No wonder the front tires don't wear correctly.

Thanks again for all the data.
__________________
Peter
OTRA15 is online now   Reply With Quote
Old 07-14-2020, 01:58 AM   #15
Rivet Master
 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 13,679
Quote:
Originally Posted by LoveToWander View Post
I just had the alignment done last fall for the reasons mentioned about. The only difference is that when Airstream loads the vans without the re-alignment, it's sometimes because the alignment has reached the end of the adjustment range. At the MB sprinter shop they added some kind of mod kit that allowed for proper alignment and the tires have stopped rubbing the outsides off. Money well spent considering the price of tires. Expect 600 to 700.

Excellent detail, thanks.
__________________
Peter
OTRA15 is online now   Reply With Quote
Old 07-14-2020, 07:45 PM   #16
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 3,338
Here are the details of my RVSEF weighing in 2018 after I finished all my major updates of solar, inverter/charger and batteries.

Can you tell I'm an engineer?
Attached Files
File Type: pdf Sprinter Weights.pdf (174.9 KB, 5 views)
__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 07-15-2020, 07:03 AM   #17
Rivet Master
 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 13,679
. . . truly twisted . . .



Thanks,
__________________
Peter
OTRA15 is online now   Reply With Quote
Old 07-15-2020, 04:32 PM   #18
3 Rivet Member
 
Hawk-ination's Avatar
 
2014 Interstate Ext. Coach
Cedar Rapids , Iowa
Join Date: Oct 2018
Posts: 158
Nice CAD drawing of your Airstream! Interesting numbers. They are a heavy beast!
Hawk-ination is offline   Reply With Quote
Old 07-15-2020, 05:27 PM   #19
Rivet Master

 
2007 22' International CCD
Corona , California
Join Date: Jul 2013
Posts: 8,122
Front driver outer tire wear

Sounds perfectly normal around here.

Know to produce level 3 drawings for a birdhouse in the Department of Overkill Engineering on a regular basis.

Still have a full drafting table and parallel-arm drafting machine handy in case the computer goes down. And yes, a full set of triangles and all kinds of templates.

The sad bit is the small drafting board and T-square I used in high schoolóis still here in the home office. And the compass and dividers kit from the same era is still here, along with my architectís scale. And lead holders, sharpener, etc. And my old eraser shield Plus the horsehair brush for cleaning up eraser shavings. Plus a ink lettering template and machine set. All of it made by K&E as well. And it all still gets used occasionally.

And yeah, I still know how to use all this stuff. Yup, twisted.
__________________
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.
rmkrum is offline   Reply With Quote
Old 07-16-2020, 07:43 AM   #20
Rivet Master
 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 13,679
Thumbs up

Quote:
Originally Posted by rmkrum View Post
Sounds perfectly normal around here.
. . .
Yup, twisted.


__________________

__________________
Peter
OTRA15 is online now   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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help with uneven wear on front tire Camerons Sprinter and B-van Forum 6 01-08-2018 02:51 PM
1998 LY 30 front tire wear on the inside edge after two front end alignments? Trident Land Yacht/Legacy Motorhomes 19 08-13-2017 01:06 AM
More Tire Wear - Front or Rear? Ag&Au Tires 3 01-13-2014 05:21 PM
Front end tire wear - Sprinter 3500 EXT kaylorsan Sprinter and B-van Forum 4 10-27-2013 08:56 PM
Outer skin of unit (roof to outer wall) jaharper Ribs, Skins & Rivets 1 08-01-2011 01:05 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 09:27 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.