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!

My room.

My room.

Desert scaping

Desert scaping

Will my hydrangeas come back?

Will my hydrangeas come back?

Not about any plants but certainly garden related.

Not about any plants but certainly garden related.

Moy Grande Hibiscus

Moy Grande Hibiscus

What do you think…

What do you think…