bizzaro tire wear

[catman2130093]

my gv's rear tire is worn much more on the left side than the right. Scoot now has 6k miles and I'll replace the tire soon (09) model,btw.  Why would the tire wear this way-my left butt cheek isn't heavier than my right!-and does the group have any recommendations re the rear tire? It has an Avon on it now..Thanks folks-I love my GV, and you folks are pretty cool too!

[CROSSBOLT]

Two possible causes: 1. Faulty tire 2. Rear wheel "cocked" in frame. Park it on the center stand and sight up the rear wheel to the front wheel to see if either one are off vertical. I do not know if your rear wheel is one shock/spring or two. One weak spring or shock in a two shock/spring system could shift ALL the static and dynamic loads to one side. Test for this by removing both shock/spring units and compare how they feel as you carefully "plunge" them up and down on a block of wood, rubber pad or something that would keep them from slipping on the floor. The single arm, single shock set-ups would have some structural or mechanical problem that would cock the wheel. A bad tire may be inspected after removal. Let us know what you find and maybe we can come up with some other "bright idea" on what could be wrong.

Karl

[catman2130093]

I should have mentioned the GV is an 09 with 6k miles on it. I like the idea of the shock test-it does have two. Next week I'll have the tire replaced-and will check the spring/shock thing. Thx!

[dalebor]

Crossbolt had some good ideas.

Another possibility is road crown. This  would only happen if you ride on the right side of the road. Roads are built with the pavement in the center of the pavement higher than the pavement on the edge. This slope helps drain off the rain.

The crown of the road places more of the tire contact patch to the left of the center of the tire. This can cause the left side of the tire to wear more than right. I have seen this mostly on heavier motorcycles with the tire pressure a bit on the low side and ridden mostly at (higher) highway speeds on rural two lane roads. This type of road usually has a  more pronounced crown than urban streets. Multi-lane highways are also crowned in the middle but usually between lanes in the same direction. Since you are likely to be on either side of the crown you won't have this wear pattern.

DaleB

[catman2130093]

that merits consideration as well,the bulk of my riding is on a 2 lane US hiway with a 60 mph speed limit-40 miles each way. I usually run an indicated 65 mph,which I believe actually equals about 58 mph. I'm 5'11 and weigh about 210 lbs.