14 Inch SBP Largest Wheel Width

I have a set of 14x7 1/2 custom made that I run 245/60/14s on , just swapped the back to 15s but still run them on the front of my cuda

So, you have 245/60-14s on 14 x 7.5 rims on the front of your Barracuda? I'm asking because I picked up some 14 x 7 wheels and was pondering what size tires would fit. What is your backspacing? Which brakes do you have? I have the factory K-H disks and SBP, obviously. Thanks.