255/60/15 tire availability

Just out of curiosity, what's the problem with the Coopers?

I have 255/60/15 Coopers on 6.5" rallye wheels.

Hankook makes a good tire as well.

Both are better than the Coker manufactured BFG T/A tires, per the traction/temp/treadwear ratings.

$110 ain't too bad a price, either.

The Cooper Cobra's have a 440 treadwear rating, which is even harder than BFG TA's at 400. Temp and traction ratings are the same, A B. They're all season tires, just like the BFG T/A's. Which means they're "ok" in most conditions, and not great in any conditions. They sure as heck aren't high performance tires, which is again shown by the "T" speed rating. Only rated to 118mph. Which is better than the BFG T/A's, which are "S" rated, so, only good to 112. Yeah sure, that's ok on the street, but it's not even that great for a moderately fast street car on the track, be it a straight 1/4 mile or a road course. And typically higher speed rated tires balance easier, so, even on the street at speeds lower than the rated speed the lower speed rated tires tend to feel like, well, lower rated tires.

Also, a 255/60/15 shouldn't be mounted on anything narrower than a 7" rim.