Larger Tires
 

What is the largest tires as in wide can put on a 1985 Capri Asc Mclaren


largest 16inch
largest 15inch
and what is the best bang for the buck on good hi-performance tires


nittos
bfg's
general tires xp2000

if I have to I will roll the finders but I perfer not toi just can not get the tires to dig into the pavement

What size wheel do you have?

15x7
16x7

I think a 225 is the widest recomended tire for a 7 inch wheel. Check out:
http://www.tirerack.com

Go through their calculator and they will tell you exactly what will fit, how much it'll cost, and everything else you want to know.

Are you looking for drag radials, or just a good overall street tire?