I always wondered why they built Chargers and many other Mopars with the capacity for much larger tires in the rear, but they only came stock w skinnys. Same reason I guess they figured if you wanted to change these things its easy enough....

Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451