Wide wheels have been a staple of the muscle car mantra since day one. While some were blessed with an abundance of clearance, others were stuck with the stock skinnies and not much more. 1966 to 1970 Dodge B-bodies, for example, were inexplicably cursed by a strange pinch point on the outer half of the outer wheelhouse.

In the past, that deranged divot was a major factor in selecting tire width and backspacing, even after installing a mini-tub which only takes care of the inner wheelhouse clearance. USCT Motorsports came up with a splendid solution in their outer wheelhouse growth rings (P/N USCTAM2049).

By simply cutting out the factory pinch and replacing it with USCT’s growth ring on both sides, ’66-’70 Dodge B-body drivers can gain up to 2” of usable width and 3” of tire diameter clearance. Maximum tire size still depends on a multitude of factors like ride height, wheel size, and wheelbase, but their test car, a 1968 Coronet with mini-tubs and a spring relocation, was able to squeeze in 29” tall x 15” wide meats on 15” x 12” wheels.

No modifications to the rear seat or seatbelts are required for installation since all of the work is done to the outer wheelhouse rather than the inner. It’s the perfect way to leave those leaky air shocks in the dust and get that rubber tucked up tight in the wheelwell.