Chris,
Bf goodrich has a very limited number of 15
inch V or Z rated Comp TA tires. Of the sizes you are looking for, they have a 225/50ZR. I believe that they had more available a few years ago, but with the trend going to big rim,low profile, they eliminated those sizes.
Good luck in your quest.
Bill
[ March 03, 2002: Message edited by: Bill Bayard ]