# Full size spare 2020 Grand Cherokee questions

**URL:** <https://community.cartalk.com/t/full-size-spare-2020-grand-cherokee-questions/192116>\
**Category:** Maintenance/Repairs\
**Tags:** grand-cherokee, jeep\
**Created:** [August 5, 2023, 9:15pm UTC](https://community.cartalk.com/t/full-size-spare-2020-grand-cherokee-questions/192116 "2023-08-05T21:15:57Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![MonkTX4064](https://avatars.discourse-cdn.com/v4/letter/m/6de8d8/32.png) [@MonkTX4064](https://community.cartalk.com/u/MonkTX4064)\
**Post date:** [August 5, 2023, 9:15pm UTC](https://community.cartalk.com/t/full-size-spare-2020-grand-cherokee-questions/192116/1 "2023-08-05T21:15:57Z")

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Hello all,

I am trying to get a full size spare for my parents grand cherokee. Right now they have 265/60R18’s on it and a donut for a spare.

Would there be an issue with buying a P245/65R18 ( I see several of these listed on ebay as full size spares for grand cherokees)?

Will the mismatch on the width and sidewall height be a major issue for a spare to get back home if you’re a couple of hundred miles out?

Thank you,  
Monte

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**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\
**Post date:** [August 5, 2023, 9:26pm UTC](https://community.cartalk.com/t/full-size-spare-2020-grand-cherokee-questions/192116/2 "2023-08-05T21:26:16Z")

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That would be perfect for a spare, it’s the same diameter.  
 ![Capture](https://global.discourse-cdn.com/cartalk/original/3X/4/d/4dcc1295f900882596e35bebd1e2fbd67b1eeebd.jpeg)

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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:** [August 5, 2023, 9:29pm UTC](https://community.cartalk.com/t/full-size-spare-2020-grand-cherokee-questions/192116/3 "2023-08-05T21:29:12Z")

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Diameter is the key dimension for a spare for an all wheel drive or 4 wheel drive vehicle. Th 245/65/18 is spot on.

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**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [August 5, 2023, 9:35pm UTC](https://community.cartalk.com/t/full-size-spare-2020-grand-cherokee-questions/192116/4 "2023-08-05T21:35:28Z")

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Manufactures usually provide a compact spare tire because there is not enough storage room for a tire that is 10 1/2 inches wide.

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**Author:** ![ledhed75](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@ledhed75](https://community.cartalk.com/u/ledhed75)\
**Post date:** [August 5, 2023, 9:45pm UTC](https://community.cartalk.com/t/full-size-spare-2020-grand-cherokee-questions/192116/5 "2023-08-05T21:45:09Z")

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Yeah, the full size spare may not fit either into or under the area where the donut spare currently lives.

I’m all for a full sized spare myself…but make sure you have a plan to secure the larger spare if it doesn’t fit in the regular spot.

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**Author:** ![MonkTX4064](https://avatars.discourse-cdn.com/v4/letter/m/6de8d8/32.png) [@MonkTX4064](https://community.cartalk.com/u/MonkTX4064)\
**Post date:** [August 5, 2023, 10:33pm UTC](https://community.cartalk.com/t/full-size-spare-2020-grand-cherokee-questions/192116/6 "2023-08-05T22:33:56Z")

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There is a huge styrofoam insert in the spare tire well to hold the mini, when you pull it out, there is a full size tire impression formed into the body pan or whatever you call it.

Thank you all for your input.