The prototypes look extremely similar to the current Challenger SRT Hellcat with the same hood scoop, front fascia design, rear spoiler construction, and rear end. The white and purple vehicles, though, are wearing extremely wide tires. The extra-wide rubber on the prototypes appear to have a similar tread design as the ones found on the Dodge Viper ACR, which features the grippy Kumho Ecsta V720.
While the ACR wears 295 mm tires at the front, the car's rear tires are massive at 355 mm. The tires found on the prototype don't appear to be as large as the ones found on the ACR, but are expected to be larger than the current Challenger SRT Hellcat's, which are Pirelli P Zero Neros measuring 275 mm at all four corners. The Challenger ADR, with its wider, stickier tires is expected to cater to drivers that are looking to put all of the supercharged 6.2-liter V8's power to the ground.
The rear-wheel-drive ADR is expected to come with a wide-body kit, which is missing from the prototypes. The Hellcat-powered, wide-body Challenger ADR is expected to make an appearance later in 2017, with an all-wheel-drive model (sans Hellcat engine) known as the GT AWD following closely thereafter.