# Shimmy

**URL:** <https://community.cartalk.com/t/shimmy/12003>\
**Category:** Maintenance/Repairs\
**Created:** [March 20, 2008, 3:15pm UTC](https://community.cartalk.com/t/shimmy/12003 "2008-03-20T15:15:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![silverado](https://avatars.discourse-cdn.com/v4/letter/s/cdc98d/32.png) [@silverado](https://community.cartalk.com/u/silverado)\
**Post date:** [March 20, 2008, 3:15pm UTC](https://community.cartalk.com/t/shimmy/12003/1 "2008-03-20T15:15:32Z")

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I had my tires rotated about a month and a half ago and since then my truck has had a vibration whenever I drive at speeds faster than 60mph. I have had the tires checked for defects and they are all good. My front wheels have had to be rebalanced everytime that I have taken the truck back to the tire store that rotates the tires. Is it safe to assume that I need new wheels?

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**Author:** ![cappy208](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cappy208/32/31_2.png) [@cappy208](https://community.cartalk.com/u/cappy208)\
**Post date:** [March 20, 2008, 3:29pm UTC](https://community.cartalk.com/t/shimmy/12003/2 "2008-03-20T15:29:26Z")

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reverse them, back to front, front to back. see if it goes away.

it’s possible that the tires got worn when they were on the back. any abnormal tire wear?

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**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [March 20, 2008, 4:45pm UTC](https://community.cartalk.com/t/shimmy/12003/3 "2008-03-20T16:45:03Z")

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How were they checked for defects?

Have them spun on a Road Force Balance machine. That spins the wheel while pressing a drum against the tread to simulate road forces. It can detect suttle conditions and/or defects better than regular machines.