# Thumping in Reverse

**URL:** <https://community.cartalk.com/t/thumping-in-reverse/50871>\
**Category:** Maintenance/Repairs\
**Tags:** gs300, lexus, 300\
**Created:** [June 26, 2010, 1:52am UTC](https://community.cartalk.com/t/thumping-in-reverse/50871 "2010-06-26T01:52:57Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Larius](https://avatars.discourse-cdn.com/v4/letter/l/ecae2f/32.png) [@Larius](https://community.cartalk.com/u/Larius)\
**Post date:** [June 26, 2010, 1:52am UTC](https://community.cartalk.com/t/thumping-in-reverse/50871/1 "2010-06-26T01:52:57Z")

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I hear and feel a strange thump while braking in reverse in my 2002 Lexus GS300. The slower I’m moving the more I notice the sound and the feeling. I had new brakes and rotors put on recently and it seems more noticeable than before. I had the brakes and suspension checked and I was told everything is tight. The engine mounts are not cracked according to the dealership. Any suggestions?

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**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\
**Post date:** [June 26, 2010, 2:08am UTC](https://community.cartalk.com/t/thumping-in-reverse/50871/2 "2010-06-26T02:08:20Z")

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How about a bump on a tire? I have seen more than one

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**Author:** ![Larius](https://avatars.discourse-cdn.com/v4/letter/l/ecae2f/32.png) [@Larius](https://community.cartalk.com/u/Larius)\
**Post date:** [June 26, 2010, 2:24am UTC](https://community.cartalk.com/t/thumping-in-reverse/50871/3 "2010-06-26T02:24:32Z")

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I added 4 brand new tires the same day I changed the brakes and rotors. The thumping only occurs while in reverse. It use to occur while backing out of my garage in the morning, but now it occurs whenever I drive in reverse and brake. I should say it only happens once just before I come to a complete stop.

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**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\
**Post date:** [June 26, 2010, 2:25pm UTC](https://community.cartalk.com/t/thumping-in-reverse/50871/4 "2010-06-26T14:25:27Z")

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No direct answer, just a plan of action, how about having a different shop take a look?

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**Author:** ![bscar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bscar/32/34_2.png) [@bscar](https://community.cartalk.com/u/bscar)\
**Post date:** [June 27, 2010, 1:02am UTC](https://community.cartalk.com/t/thumping-in-reverse/50871/5 "2010-06-27T01:02:02Z")

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i’ll second this. I had a similar problem with my Civic a few years ago. Turned out a bolt on my driver’s side caliper had come off.