Lippy 15" tires will be around for the next 50 years or until your cobra becomes an antique. BB tires are being made in batches. Like anything else, it's about supply and demand. Avon are a better tire than BFG's. I started with BFG's On street OK, on the track they are poor. The only good thing is they are great for smokin burn outs, and they give good warning when they loose grip of the track. Easy to power slide them. 2 notes
15" wheels look correct with BB tires. Bad thing with BB tires is they get flat spots and they go out of round from this. IF car is off the ground when not driving, these tires are great, also as vacuum cleaners for the road. They pickup every thing that is not tarred and oiled down.
17" or 18" what can you say, better handling, higher "G" turns and control, stops faster, and some combo's look cool on a cobra. Your top cobra owners are running 18" wires like Cobra #3170 and Morris. Both of these cars are silly fast and handle.
As long as Nascar stays with 15" wheels, tires will be around for our cars. Someone said Cocker tire is making 15" old style tires with new style engineering of radials.
If you are that worried about tires, buy a couple of sets, build a vacuum storage vault with climate control and you have a time capsale for your tires. good for 30+ years if we still have gas and a free country.
Rick L.