I have 295/65s on 10" Cragars. The edges are pulled up off the pavement with 18-20 lbs. I have to let them down to 12 lbs or so to get them to lay the full face on the pavement. And 12 lbs is too low.

What rims are you considering? Most companies will build your backspace on a special order. Cragar did mine.

You may want to consider the 275/60 Rs on a 10" rim. They would lay better with the 10" rims IMHO. The only reason I don't do that myself is because I like the look of those huge 295s on the back of the Cuda.