# Rock under a tire **URL:** \ **Category:** General Discussion\ **Created:** [February 17, 2011, 5:26pm UTC](https://community.cartalk.com/t/rock-under-a-tire/61473 "2011-02-17T17:26:53Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![abxxx](https://avatars.discourse-cdn.com/v4/letter/a/7c8e57/32.png) [@abxxx](https://community.cartalk.com/u/abxxx)\ **Post date:** [February 17, 2011, 5:26pm UTC](https://community.cartalk.com/t/rock-under-a-tire/61473/1 "2011-02-17T17:26:53Z")
If I inadvertently park my car on a rock so that the rock is underneath one tire, will I do any damage to the tire? Will the rock cut through or make a dent in the tire? Thank you. abxxx ---
**Author:** ![dagosa](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/dagosa/32/9837_2.png) [@dagosa](https://community.cartalk.com/u/dagosa)\ **Post date:** [February 17, 2011, 5:43pm UTC](https://community.cartalk.com/t/rock-under-a-tire/61473/2 "2011-02-17T17:43:05Z")
No and No. The resting deflection on a tire is of little concern compared to that on impact while driving. Unless the rock has a sharp edge on it, not to worry. ---
**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\ **Post date:** [February 17, 2011, 5:47pm UTC](https://community.cartalk.com/t/rock-under-a-tire/61473/3 "2011-02-17T17:47:36Z")
How big is the rock we’re talking about? ---
**Author:** ![abxxx](https://avatars.discourse-cdn.com/v4/letter/a/7c8e57/32.png) [@abxxx](https://community.cartalk.com/u/abxxx)\ **Post date:** [February 17, 2011, 6:12pm UTC](https://community.cartalk.com/t/rock-under-a-tire/61473/4 "2011-02-17T18:12:52Z")
It is hard to see the rock because the tire covers most of the rock. abxxx ---
**Author:** ![shadowfax](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/shadowfax/32/13026_2.png) [@shadowfax](https://community.cartalk.com/u/shadowfax)\ **Post date:** [February 17, 2011, 6:51pm UTC](https://community.cartalk.com/t/rock-under-a-tire/61473/5 "2011-02-17T18:51:30Z")
You’re worried about parking on a pebble? 😉 Don’t. You’re fine. ---
**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\ **Post date:** [February 17, 2011, 7:22pm UTC](https://community.cartalk.com/t/rock-under-a-tire/61473/6 "2011-02-17T19:22:40Z")
I doubt it will harm the tire, but I wouldn’t make a practice of it. ---
**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:** [February 17, 2011, 7:42pm UTC](https://community.cartalk.com/t/rock-under-a-tire/61473/7 "2011-02-17T19:42:06Z")
The forces that a tire has to withstand without damage when hitting a rock at speed are exponentially larger than the forces it has to withstand when parked on a rock. There is absolutely no way this will damage the tire. If you get the chance, try cutting through a tire tread with a razor utility knife sometime. You’ll be amazed at how hard it really is to cut a tire. I tried it once and gave up in fear of accidentally slicing off a finger. ---
**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:** [February 19, 2011, 1:17pm UTC](https://community.cartalk.com/t/rock-under-a-tire/61473/8 "2011-02-19T13:17:22Z")
I did it for 13-1/2 years. I had a peastone driveway.