[Land-speed] Tires...

[drmayf]

I want to acquire a couple of tires that can serve double duty. I want 
then to be used in an emergency on the salt in case one of the race car 
tires comes off the rim or deflates or some qually disastrous event: I 
would put the spare on to tow back to the pit.  I also want to use the 
"spare s" on a chassis dyno. To that end I would like to have at least a 
V speed rating and maybe Z. But so far I have look at a zillion tires 
and not come up with anything 

So, I ask you folk..... any of you have experience with any tire in the 
15 inch wheel size, large diameter,  V or Z rated,  skinny if 
possible,    that would save me from looking at another zillion tires?   
I need to order wheels so width is adjustable right now...diameter is 
almost cast in concrete though.

HHHeeeeelllllppppp!

mayf