cupping?
you mean feathering?
that is cause by mis balanced wheels
dont know what cupping is
but have a friend drive along side of you (seperate cars) at highway speeds and have them look at you wheels and see if they bounce up and down while moving drive for about a couple miles while they keep an eye on you
if it bounces you need new shocks
this can cause screwed up spots on tires, or abnormal tire wear
by the way
I am starting a new site
it is a forum like this one but I am an off-roader (when I can afford to be)
http://www.4x4titan.com
you mean feathering?
that is cause by mis balanced wheels
dont know what cupping is
but have a friend drive along side of you (seperate cars) at highway speeds and have them look at you wheels and see if they bounce up and down while moving drive for about a couple miles while they keep an eye on you
if it bounces you need new shocks
this can cause screwed up spots on tires, or abnormal tire wear
by the way
I am starting a new site
it is a forum like this one but I am an off-roader (when I can afford to be)
http://www.4x4titan.com