Yes, 225-50 x 15s fit stock 7" Campys and 245-50-x 15 on 8" Campys both fit a stock Pantera front end. Tires in those sizes ARE available; what's not easily available are SPEED-RATED 15" tires. Finding V, Z or W-rated 15" tires isdifficult and when found they are not cheap. Larger width fronts reduces the understeer Ford built into the Pantera, as does changing anti-sway bar diameters and a host of other adjustments. Surprisingly, 8" Campys with 245-50s will steer easier than 225-50s on 7" Campys, due to the better scrub-radius of the 8" wheels.