Eigenvector wrote:
How long would you expect a set of car tires to last when stored in
the garage?

By stored I mean dismounted, no rims, no wheels, kept out of sunlight
as best you could.

I would worry after about 4 years. Note: That means that after any
time, you will have shorter remaining life once placed in service.

--
Joseph Meehan

Dia 's Muire duit