73 Cuda, 340, 727TF, with 3.55 gears. Is there an optimum rear tire diameter for this gear? Obviously diameter affects motor rpm at highway cruise but there is also an effect on how the car accelerates out of the hole and off a corner. I'm trying to plan for new wheels and tires and tire size will determine what wheel and offset I get. I want to go with 18" wheels because the selection of performance tires is better than 15 or 17. Got a B-body rear for it and will install with the offset spring shackles. Want as much width as I can safely get (285 min) but there are options for height from 25"-29". How have you compromised? Seems that 25-26" is the sweet spot?