Used tires in gardening?

Used tires in gardening?

Years ago, someone dumped a truckload of used tires on our land. (Rednecks are awesome!) I have an idea of using those tires as a border for a small raised garden in a corner of my yard. I plan to stack them two high, and make the tires themselves a sort of planter for tomatoes, rosemary, etc.

My question is: Is this insane? Am I setting myself up for leaching chemical problems?

Thanks for your input!

Today on my allotment

Today on my allotment

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It only LOOKS like a banana / Bay Laurel questions…

update

update

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Pics from my place

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My new place!

Plant Identification

Plant Identification