[TR] Wedge Tires?

[TR250Driver at aol.com]

Hi Guys,
Need new tires on all three of my Wedges, the two TR7's and the TR8.   
Seems that the supply & selection of the original size,185 70 13, has all  but 
dried up.  They can still be had but not in any brands I would  want.  So 
perhaps it is time to deviate from stock.  Anyone have any  recommendations of 
a modern size that fits the stock rims?
Thanks,
Darrell