what causes rear tire cupping

[pmelah]

im starting to get cupping on the rear tire any ideas of what to look for to fix :confused24:

[twigg]

im starting to get cupping on the rear tire any ideas of what to look for to fix :confused24:

 

Wrong tire pressure, poor tire construction or type, knackered rear suspension, swing-arm pivots with too much play.

 

Probably a bunch more. Rule out the obvious and whatever is left is the cause.

 

Not all apparently suitable tires wear the same way.

[pmelah]

thanks twigg

[reddevilmedic]

put some SEAFOAM on it....

[djh3]

Sometimes tires when they get older just start wearing funny

[Peder_y2k]

More than you wanted to know about tire wear:

 

http://www.rattlebars.com/tirewear/

 

-Pete, in Tacoma WA USA

'83,88 venture

[djh3]

Kind of what I was getting at. As the tire wears and get "thinner" in spots it is more able to move and conform so it wears differently. Thanks for the link, I had read that a couple times before but its nice to review ocasionaly.