rs1, Jack and Garth, thank you. I currently have little-used, but over-aged P225/50R-15 and P295/50R-15 Dunlops mounted on 8" and 10" aftermarket BBS-style wheels on my 1974 GTS that fit well, but Avon does not make a P225/50R-15 (or a P245/50R-15) CR6ZZ tire, and the diameter of their P225/60R-15 is 25.7" vs the approximately 23.9" diameter of P225/R50-15's. I am planning to buy a set of 15-8" and 15-10" Campagnola reproduction wheels and would like to buy a new set of tires from a single manufacturer to fit them, but as rs1 indicates, my primary concern is what interference or other problems the taller tires may create.
It appears that a number of owners like me who want to keep their OEM wheels are having to install front and rear tires from different manufacturers. I have read that other than aesthetics, as long as they're all radials and you don't mix them on the same axle, this doesn't create a significant problem with handling or premature wear of suspension components.
Comments? Has anyone else tried the Avon CR6ZZ's in these sizes?