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Author Topic: Tyre Cupping or Tyre Scalloping  (Read 4910 times)

Sabie

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Tyre Cupping or Tyre Scalloping
« on: March 24, 2014, 09:35:07 PM »
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Offline BigTed

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Re: Tyre Cupping or Tyre Scalloping
« Reply #1 on: March 25, 2014, 12:46:20 AM »
Thanks Sabie, nice find. Now I know it's not actually a problem.  :thumbsup
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jimwilly

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Re: Tyre Cupping or Tyre Scalloping
« Reply #2 on: March 25, 2014, 09:14:37 AM »
Good read, Ive often had conversations with other riders that blame all sorts of things for cupping.
I always blamed it on road camber.
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Offline johnnyYTED

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Re: Tyre Cupping or Tyre Scalloping
« Reply #3 on: March 25, 2014, 01:54:05 PM »
 :dred11
this is my rear tyre after Ballarat, could it be my 1st time pillion was sitting slightly to the right looking over my shoulder, I felt my bike wasn't  vertical but I put it down to towing and Pillion also trye pressure was down

the other side of tyre

very unusual wear,mayB i should turn left more... :crackup
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Offline Biggles

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Re: Tyre Cupping or Tyre Scalloping
« Reply #4 on: March 25, 2014, 04:31:07 PM »
I'm far from an expert, but that looks like it was under-inflated for your pillion load.
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Offline johnnyYTED

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Re: Tyre Cupping or Tyre Scalloping
« Reply #5 on: March 25, 2014, 06:00:17 PM »
 :dred11
Quote from: Biggles on March 25, 2014, 04:31:07 PM
I'm far from an expert, but that looks like it was under-inflated for your pillion load.

yes you might be right Biggles,, my STeed isnt used to such a pillion overload.. :crackup
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Picton  if it doesn’t flood higher than previous times.
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Offline Wild Rose

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Re: Tyre Cupping or Tyre Scalloping
« Reply #6 on: March 25, 2014, 06:31:46 PM »
Quote from: johnnyYTED on March 25, 2014, 06:00:17 PM
:dred11
Quote from: Biggles on March 25, 2014, 04:31:07 PM
I'm far from an expert, but that looks like it was under-inflated for your pillion load.

yes you might be right Biggles,, my STeed isnt used to such a pillion overload.. :crackup

I had the same looking tyre on my 02 ST1300 a few years back after riding on a tyre with a slow leaking on my way to Lightning Ridge
It got me back to Toowoomba after pumping it up again

I think you might have to do a trip to the bike shop for a new tyre  :fp
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Offline johnnyYTED

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Re: Tyre Cupping or Tyre Scalloping
« Reply #7 on: March 25, 2014, 06:50:04 PM »
 :dred11
I dont think I'll be riding anywhere b4 I get a new one.  :law I looked at my receipt and I've done over 11k k's on this tyre so not bad considering trailer weight also for about 3k of that.. will get r angle nipples too...
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Picton  if it doesn’t flood higher than previous times.
mobile 047 4488 436 
IBA#59147, FarRider #732
STranger 1998 ST1100, x Police
STrangler ST1300 2007 Charcoal Grey.
BEEstY 2017 Can-Am Daytona 1330.
maybe something with a little extra
:dred11 :Spyder
 

Sabie

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Re: Tyre Cupping or Tyre Scalloping
« Reply #8 on: March 25, 2014, 11:15:11 PM »
To minimise cupping you still need to have the correct tyre pressure, but it makes sense to me. My font tyre is starting to show signs of cupping on this trip, tyre pressure has been closely monitored and yet cupping is still forming.

I do believe under inflated tyres would contribute to the severity of the cupping and the speed and magnitude of the cupping.

Correct tyre pressure is always the right way to go.
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saaz

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Re: Tyre Cupping or Tyre Scalloping
« Reply #9 on: March 26, 2014, 08:54:23 AM »
Under inflation and suspension that is too soft (soft springs/lack of damping) can make the tyre flex and work harder, leading to strange wear patterns.  Having a tyre not rated for the weight of the bike can be another problem.
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