# 2018 grand cherokee. Need to replace all tires?

**URL:** <https://community.cartalk.com/t/2018-grand-cherokee-need-to-replace-all-tires/172508>\
**Category:** Maintenance/Repairs\
**Tags:** jeep\
**Created:** [November 20, 2020, 9:46pm UTC](https://community.cartalk.com/t/2018-grand-cherokee-need-to-replace-all-tires/172508 "2020-11-20T21:46:31Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Nicolas-22](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nicolas-22/32/23264_2.png) [@Nicolas-22](https://community.cartalk.com/u/Nicolas-22)\
**Post date:** [November 20, 2020, 9:46pm UTC](https://community.cartalk.com/t/2018-grand-cherokee-need-to-replace-all-tires/172508/1 "2020-11-20T21:46:31Z")

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TL,DR: New Tire of same brand (same tread pattern) is 1/14-1/16 inch thicker than rest of the tires. Do i need to replace all of them? AWD

So, got one of my tires punctured and had to switch on the spare tire (passenger side front).

Then went to a repair shop and the owner told me that I can replace one tire.  
ended up getting a single tire of the same brand (bridgestone, ecopia h/l 422 plus)

After replacing the tire, I measured the 4 tires and the new one is 1/14-1/16 inch thicker than the rest…  
The rest of the tires had 17k miles on them

I read online about how having a mismatch in tire size causes trouble with AWD system and system and what not… was wondering if I need to replace all 4 tire

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [November 20, 2020, 10:08pm UTC](https://community.cartalk.com/t/2018-grand-cherokee-need-to-replace-all-tires/172508/2 "2020-11-20T22:08:47Z")

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Some cars are very sensitive to the different diameter of a single replaced tire. Subarus for example, you would need to replace all 4 per the owners manual.

What does your owners manual say about this?.. I’ll tell you, page 483 says to replace tires in pairs on a given axle. So you need one more new tire, not 3.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [November 20, 2020, 10:14pm UTC](https://community.cartalk.com/t/2018-grand-cherokee-need-to-replace-all-tires/172508/3 "2020-11-20T22:14:56Z")

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Ask a tire shop to shave the new tire down so it matches the other three.

Tester

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**Author:** ![Nicolas-22](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nicolas-22/32/23264_2.png) [@Nicolas-22](https://community.cartalk.com/u/Nicolas-22)\
**Post date:** [November 20, 2020, 10:50pm UTC](https://community.cartalk.com/t/2018-grand-cherokee-need-to-replace-all-tires/172508/4 "2020-11-20T22:50:54Z")

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thanks!!! missed this in the manual…

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [November 20, 2020, 11:10pm UTC](https://community.cartalk.com/t/2018-grand-cherokee-need-to-replace-all-tires/172508/5 "2020-11-20T23:10:33Z")

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I’d have the new tire shaved.