The rear street tires in the pics are 255/60r15's (redlines from dbtires.com).

Since I've swapped the 1 inch narrower than stock Dana 60 (with 4.10 gears) I've been thinking that the next street tires will be either 275/60r15's or 255/70r15's (on the 15x7 rims) to cut down the gear ratio a little for highway driving.

The car has a 572 Hemi/727 auto combo so it like to eat a lot of fuel.