What's the difference between an on-road, rally, and drift RC?

On-road cars use slick or low-profile tires and stiff suspension for pavement grip; rally cars (like the MJX 14303 Citroen C3 replica) use treaded tires and slightly more travel for tarmac plus light gravel; drift cars run hard plastic 'drift tires' that intentionally reduce grip so the car slides. Many modern 1/14 and 1/24 models, including the Hyper Go line, ship with multiple tire sets so one chassis can do all three.