Another option, if you have tires you are not that committed to, is to ask your tire shop to take them in trade and get what you need and want.  Discount Tire here gave me $20 apiece for the Cooper tires (maybe they were 8.50x14) that were on my camper when I bought it.  They had a little over half the tread left.

Shaving tires sounds to me like just throwing away rubber, but what do I know?  mcneely

---- Richard A Jones <Jones@COLORADO.EDU> wrote:
> > ( real hardcore types by 6 new tires and rotate 6 on a regular basis, so
> > if they loose one to a rock or whatever..
> > they still have an identical-size spare. )
>
> Something to keep in mind, if your tires are not worn too much.
> Some tire shops, those that work with racers and (around here++)
> those that sell to Subaru owners, can shave a new tire down
> to match the others.
>
> Richard
> Boulder
>
> ++Tire Source

--
David McNeely