cupping - Kawasaki Vulcan Forum : Vulcan Forums
 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 02-06-2019, 05:47 AM Thread Starter
Junior Member
 
Join Date: Feb 2019
Posts: 5
cupping

What causes cupping in tires?
gwedwards1612 is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 02-06-2019, 07:04 AM
CRU
Senior Member
 
CRU's Avatar
 
Join Date: Sep 2016
Location: Seminole County, FL
Displacement/CC's: 1600
Gender: Male
Posts: 333
Garage
Screwed up suspension, hard braking, and improper tire inflation are all causes. You can find a ton more info on google.

Here ya go.

2008 Mean Streak Candy Fire Red
Vance & Hines Big Shots Staggered exhaust
Dyno tuned Power Commander III & K&N air filter
Corbin Young Guns saddle/Kawi Fire & Steel "Touring" Double saddle
Mapam forward controls
Kuryakyn Constellation LED driving lights w/turn signals
Kuryakyn ISO grips w/stiletto end caps
Kawi OEM backrest
Kawi Fire & Steel windshield
Bad Ace Billet handlebar risers
Signal Dynamics BackOFF XP brake light module
Tourmaster Coaster tool bag
CRU is offline  
post #3 of 6 (permalink) Old 02-21-2019, 05:33 AM
Top Contributor
 
btom's Avatar
 
Join Date: Mar 2016
Year/Make/Model: '05
Displacement/CC's: 800
Gender: Male
Posts: 1,152
Garage
cupping is caused by improper tire pressure

Thunder Mfg teardrop 40's K&N 170MJ 48PJ 2.75turns DynoJet Needle DNO106 2nd notch V&H Cruzers Aeromach risers Michelin Commander IIs Wix 51358 filter 17T/40 Sprockets, 2357 rear bulbs
btom is offline  
 
post #4 of 6 (permalink) Old 02-22-2019, 09:24 AM
Lifetime Premium
 
Patrick's1500's Avatar
 
Join Date: Jun 2016
Location: The wilds of North idaho
Year/Make/Model: 2004 VN 1500E7
Displacement/CC's: 1470
Color: green over white
Gender: Male
Posts: 668
If you are in North America, your cupping (also called spalling) will be more severe on the left side of your tire. Lean to the right or left when you're going in a straight line and you'll feel the buzzing of the tire on the pavement. On mine it;s always way more pronounced on the left side of the r tire than the right. In the UK it's the opposite. It just means the tires are doing their job. My bike a has always developed cupping on the front tire, starting somewhere around 4-5k miles and there is nothing wrong with the suspension or air pressure. it also won't hurt anything and your tire will wear completely out before the cupping becomes a safety issue. All 4 sets of tires I've put on this bike have done it. When you lean into a turn, the leading edge of your tread pattern its the pavement first and wears first. The reason the left side wears out faster than the right is because left turns are more than twice as long as right turns, generally. I saw one article from a guy who monitored such things and discovered that he put about 30-50%% more miles on the left side over the life of the tire than the right just with left turns. Riding style and air pressure can help mitigate cupping, but you won't stop it if you ride much. Avoid sudden turns or excessive front braking and it will make the tires last longer.
Patrick's1500 is offline  
post #5 of 6 (permalink) Old 02-22-2019, 10:08 PM
DKC
Senior Member
 
Join Date: Jan 2019
Location: Eagle Lake, FL
Year/Make/Model: 2008 en500c
Displacement/CC's: 500
Color: Black
Gender: Male
Posts: 242
Garage
One bit to add to Patrick's explanation, and some further clarification. The reason the left side of the tire wears faster than the right isn't the left hand turns so much.

Take a good, close look at the road. There's a crown with the center being the high point. They do this to help the water run off the pavement. Because of this, even on a straight road, you're effectively leaning left in relation to the road.

The admin are proposing major changes to our forum. Please take a moment and look them over and cast your vote here:


To view links or images in signatures your post count must be 1 or greater. You currently have 0 posts.
DKC is offline  
post #6 of 6 (permalink) Old 02-23-2019, 08:41 AM
Lifetime Premium
 
Patrick's1500's Avatar
 
Join Date: Jun 2016
Location: The wilds of North idaho
Year/Make/Model: 2004 VN 1500E7
Displacement/CC's: 1470
Color: green over white
Gender: Male
Posts: 668
Quote:
Originally Posted by DKC View Post
One bit to add to Patrick's explanation, and some further clarification. The reason the left side of the tire wears faster than the right isn't the left hand turns so much.

Take a good, close look at the road. There's a crown with the center being the high point. They do this to help the water run off the pavement. Because of this, even on a straight road, you're effectively leaning left in relation to the road.
It's been a subject of debate for a long time, but I'm not completely sold on the road crown argument But it could be a contributing factor. This guy doesnt thinks so.

Motorcycle Tire Wear

Others do, though, from what I've read.

The main thing is to understand it's normal on these heavy cruisers regardless of what causes it and it won't hurt anything.

By the way, where are you located?
Patrick's1500 is offline  
Sponsored Links
Advertisement
 
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Front tire cupping Shark88 Vulcan 2000 5 09-24-2014 08:56 PM
Vn900 Custom Tire deformation DnKiKe Vulcan 900 2 07-26-2014 11:46 AM
Almost got rid of the front tire cupping g1nomad Vulcan 2000 0 05-08-2011 05:13 PM
front tire cupping matt36567 Wheels and Tires 3 09-11-2010 04:06 AM
front tire cupping bensonbunch2005 Wheels and Tires 5 09-17-2009 08:42 AM

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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome