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Old 10-05-2012, 10:33 AM   #1
JamesM OP
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Peeling Sidewall?

I just purchased a K1200RS which needed a new rear tire but after taking it home (in the rain ) pulled into the garage and noticed some bits of tire shedding from the right sidewall.

Is this normal when tires get older? Its on the para lever side so I double checked for contact wear and couldn't find any.

Before spending a few hundred $$ to replace my tire, I want to make sure the new one doesn't get chewed up as well.

Pics:
photo 1

photo 4

photo 3

photo 2
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Old 10-05-2012, 10:44 AM   #2
pjensen641
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Sure looks like it is rubbing on something.

I'd check Tire pressure, recommended tire size vs what is on there, wheel bearings etc. Not normal.

Did the final drive go bad and the original owner have it repaired, but left the old damaged tire on?
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Old 10-05-2012, 10:44 AM   #3
Big Lee
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That does look like it`s been rubbing on something, have you checked for play in the rear wheel?
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Old 10-05-2012, 10:53 AM   #4
rocker59
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Is it wider than OEM fitment?
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Old 10-05-2012, 11:02 AM   #5
ChR1s
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That tire looks like it's been in an accident.
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Old 10-05-2012, 11:14 AM   #6
JamesM OP
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Quote:
Originally Posted by ChR1s View Post
That tire looks like it's been in an accident.
How so?
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Old 10-05-2012, 11:18 AM   #7
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How so?
The chafing looks like it's happened at a slow speed, and there appear to be lateral marks on the tread?
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Old 10-05-2012, 11:14 AM   #8
JamesM OP
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Quote:
Originally Posted by rocker59 View Post
Is it wider than OEM fitment?
Stock Rubber: 170 60 17 at 40 PSI (+-3 PSI for digital reader) BMW recommends 42 PSI but I cant see how +-5 PSI would cause that kind of wear.

Performed 2 test:
-12 and 6 o'clock check for rear bearing play without luck.

-I put my finger between the Brake Rotor and Final Drive housing spun the wheel, while trying to move it horizontally to test for play but didn't feel any pressure change on my finger.

Here are a few more images showing the space between the paralever and tire:

Bottom Looking Up:
photo 4

Top Looking Down:
photo 2
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Old 10-05-2012, 11:20 AM   #9
snowhawk jockey
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That is foreign object damage.


I had road debris hang up on my swingarm and rub the edge of my tire just like that. It left all kinds of scraped marks and rubber shreds. I didn't realize it was there, until the tire sucked it through and it cleared itsself
Don't know what the debris was, but it freaked me out when it cleared.
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