Tyres can indeed be recycled. They can be re-used or retreaded to make
more tyres, or recycled to make railroad ties, rubber modified
asphalt, athletic surfaces, plastic/rubber blends, insulation, or
fuel. The are several new ideas also being researched.
This Ohio Department of Natural Resource web site has a good guide to
tyres and their recycling.
This document from the UK?s Department of Trade and Industry (DTI)
sets out how the UK is dealing with the problem and the available
As for where to dispose of them, I?m not sure where in the world you
are located but I suspect by your spelling of tyres - sorry, tires,
suggests the US. In that case, the US Environmental Protection Agency
has useful information and advice on the disposal of tyres.
I hope this answers your question. If it does not, or the answer is
unclear, then please ask for clarification of this research before
rating the answer. I shall respond to the clarification request as
soon as I receive it.