K11 Owners Group

owrstrich · Last edited by owrstrich on Fri Oct 23, 2009 11:25 pm; edited 2 times in total

its happened on my last 3 rear michelin pilot road 2 tires...

i assassinated all the previous photos... but here are the photos from april 09... had 8k on it if i remember right...

its hard to see here... took these yesterday... at 4k the right side is nicely rounded with deep tread... the left side is cupping and is down to the wear indicators in the tread...

the left side tread depth is half of the right side tread depth...

what you think...

j o
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ALMAC · Posted: Wed Jun 17, 2009 1:56 am Post subject: One sided tyre wear

Owstrich
I have seen this type of wear on the right (I live in Australia) side of the tyre caused by the road camber, course road surface and long straight runs in the outback.
Alastair
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ALMAC
1992 K1100LT

SugarHillCTD · Posted: Wed Jun 17, 2009 5:58 am Post subject:

j o,

Alastair may have a good point there.

From all the (GREAT) pictures you have posted here I can conclude a few things:

-you tend to ride lots of narrow back roads which will have a pronounced crown- placing more wear on the left side of your tire.

-those same back roads might tend to be a rougher surface than a superslab. Again possibly contributing to more wear.

-uh...(how do I say this diplomatically?).......your K is carrying a significant amount of weight.

and finally, you always have a feather-light touch on the throttle, right? Rolling Eyes

Have you ever heard of motorcycling's "dark side"? I have no experience there but many swear by it http://lifeisaroad.com/stories/2004/10/27/theDarkSide.html

Might be something to investigate???
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John & Cathy

'92 K100RS4V Pearl White SOLD
'04 K1200GT
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Scott_Anderson · Posted: Wed Jun 17, 2009 7:14 am Post subject:

What's the front tire wear pattern look like.
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Ride safe.

1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
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"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)

ulm210 · Posted: Wed Jun 17, 2009 9:17 am Post subject:

This is probably way out there, but...

I work in the HVAC field and in relation to belts it is extremely important to make sure your pulleys are in alignment. I am thinking that with a motorcycle, it is just as important that the wheels be in alignment to the frame. Since we tend to ride to our POV, or our front tire, we might never know if our rear wheel is out of alignement. Remember how the mid 70's Chevy Nova's "doglegged" down the road? From behind you could see it plain as day, but while driving or riding in it you could not notice.

So, what I am getting at is it may be possible that when you are riding straight up, your rear wheel is actually tilted, imperceptibly, towards the left side, thereby prematurely wearing the left side of the tire.

This is the only thing I can think of as to why you do not have similar wear issues w/ the front.

It might come down to putting the bike up on a stand, leveling the frame to horizontal, and then putting a level to wheel to check the vertical.

owrstrich · Posted: Wed Jun 17, 2009 9:46 am Post subject:

sugarhillctd...

of course im easy on the throttle... i have supernatural motocontrol... your observations have been noted...

underscore...

once i got off the avons... the front tire wear has been perfect... evenly rounded... even wear from chicken strip to chicken strip... no signs of cupping... glorious front tire wear... glorious im telling you...

ulm210...

leaning slightly to the left or pointed slightly to the right could do it i guess... but what changed... nothing has changed... heres the thing... this motoheap has always run straight and true... i can ride with no hands at any speed... no sensation of rear off tracking the front...

perhaps this saturday... if the fdk11og meets us for the chinook pass deal... he can ride behind us al take a close look see at the tracking...

more ideas please...

j o
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yeeeeeehaaaaaaa...

Flying Duck · Posted: Wed Jun 17, 2009 10:45 am Post subject:

Take more right turns.

(and get this fixed before Saturday.)
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94 RS
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owrstrich · Posted: Wed Jun 17, 2009 11:08 am Post subject:

fgk11og...

its got tread... gotta ride on it saturday... i figure another 4k before it goes to cords... will get a new one on before hungree dungee...

you can take a look at it in person and offer up a diagnoses... if you would be so kind...

j o
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yeeeeeehaaaaaaa...

Mystic Red · Posted: Wed Jun 17, 2009 6:37 pm Post subject:

Ill have a look at it when it's in my spacious motobrick barn.
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Scott Hespelt, '94 K11LT
K11 OG #466

BobZ(IL) · Posted: Wed Jun 17, 2009 8:17 pm Post subject:

The tires you use are dual compound with soft rubber near the edges, harder down the center, I think. Road crown and surfaces as well as inflation could be big players.

You may want to try a single, harder compound rear. I remember you showing us that type of wear some time ago and I commented how you must be a devil on left hand corners.
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'78 R100S
'05 R1200GS
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drmalacarne · Posted: Wed Jun 17, 2009 8:26 pm Post subject:

This happens a lot with Indianápolis Race Fans that dream conter-clockwise....
Aside this, one question: Do you write with the right or left hand?
Guilherme.
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1994 K1100LT SE n° 0267
1998 HD Heritage Springer 95th anniversary
Yes, a Hog and a Beemer can live together!

Scott_Anderson · Posted: Wed Jun 17, 2009 10:06 pm Post subject:

Johnny, just turn it around and wear the other side now. Laughing

_________________
Ride safe.

1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)

Milton · Posted: Wed Jun 17, 2009 10:34 pm Post subject:

I think this might be symptomatic of the bricks. Here is a link to my Pilot Road II's before I changed them this winter. Same wear except I didn't get to the cords, but they were getting pretty close.

http://k11og.org/forum/viewtopic.php?t=6295&highlight=

Milton S.
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1992 K100RS 48K. Dead for now.
1998 Triumph Tiger 43K->56K. Doin it in the dirt.
1978 Honda CB400T 32.5K. For my boys.

Mystic Red · Posted: Wed Jun 17, 2009 11:02 pm Post subject:

Do you keep your lunch in the left case?
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Scott Hespelt, '94 K11LT
K11 OG #466

Shoganai · Posted: Thu Jun 18, 2009 5:02 am Post subject:

Johnny, put your bike on the center stand, have some weight the front and see if you have any play in the wheel.

This could be FD bearings. Question

I'll print these pics and take them to Morton's BMW today when I go to pick up fork parts.
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Steverino · Posted: Thu Jun 18, 2009 6:17 am Post subject:

Something aint right...

Check all pivot bearings.

Check fork alignment...

Something is askew.

SugarHillCTD · Posted: Thu Jun 18, 2009 6:48 am Post subject:

owrstrich · Posted: Thu Jun 18, 2009 9:36 am Post subject:

you folks have been very helpful... i really appreciate it...

so for now im going to remount the tire in reverse rotation... only turn left... and freshen up the lunch buffet in the left bag...

rodger that...

j o
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yeeeeeehaaaaaaa...

G.Kennedy · Joined: 31 May 2009 Posts: 14 Location: L.A.,CA

My take, (as a nOOb to this site) Many people turn better to the left ... with the weight bearing on your non throttle hand.

I say you are getting on the throttle earlier and more aggressively when you are turning left.

When you are turning right ... with your weight bearing on the throttle ... your not twisting as hard.

Mystic Red · Posted: Thu Jun 18, 2009 9:37 pm Post subject:

jo, here is maybe a constructive post. At least somewhere to start.

http://www.motorcyclistonline.com/howto/string_align_motorcycle_wheels/index.html

I don't believe it's the crown of the road or the way you ride, that should not happen, at least to that extreme.
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Scott Hespelt, '94 K11LT
K11 OG #466