Just got our 70 Charger going this summer (after 25 years)
It's very quick feeling on the street (concrete).

The 275-60 BFGs were worthless last night at Thompson Drag Raceway!!

Would like a track-only tire to test and tune maybe a couple of times a year.

Here's our combo:
4000# '70 Charger 440 Torqueflite
Dynoed at 465HP @5800, 490Tq @4400. Will shift @5800 hope to trap @6200
Beefed up trans w/ rev VB, a neck-snapper on the street
1969 six barrel set-up that runs great except for the transition slot
problem which I haven't time to get into yet.
4:10 rear w/Suregrip
906 heads w/ larger valves, pocket ported and port matched
Raised deck pistons , .040 quench, 10.25 CR, no ping w/93
Old style .484 Racer Brown Hydraulic, (I know, I know) LOL
Std wheel wells and spring location w/ pinion snubber (I know, Iknow) LOL
1-7/8 Hooker Super Comps TTI full 3" exh.

So, radial or bias, width and compound that will work on a 15X7"??

Thanks, Joe

PS whoops, that's 5800 RPM