more tire contact to put enough torque down in case of emergency when sudden movement in driving is needed to avoid a accident. a variable radius wheel for getting more torque or more rotation for less torque depending on real time needs. this is prolly not worth the energy required to actuate teh change in wheel radius, but teh math may show that it pays off, especially maybe if teh actuation is manual and lightly air compression assisted. actuation can happen by a handbrake like lever that can be pushed and pulled to compress air to move a piston near teh wheel which changes it radius as teh rims and tire thread are not static but instead can fold inward toward teh axle connecting the wheel to teh car, so when teh piston widens teh radius, teh folded in thread and rim pushes itself out to cover teh expanding radius of the wheel.https://www.youtube.com/watch?v=kwfNGatxUJI at 0:33, the "converging" is also a visual of this idea of teh contact patch and its supporting rim where they can be folded inside the wheel like how the landmass is folded inside underground and pushed outward in the opposite direction. another idea: a multipiece tread contact patch moved by a more lighter thinner wheel for less necessary packaging space and more aerodynamics, this gives higher traction per wheel size, each thread contact patch is pivoted around its center instead of pivoting all of them around a collective center like in a normal wheel, this can allow far less friction for better efficiency and far less loss of rubber from normal erosion, which is good for maintenance cost and not having tire rubber erosion pollute local environment, and this can give the cars ability for car drifting like movement dynamics for more efficient torque vectoring without toxic fumes from burnt tires and tire erosion material being released, and without screeching tire noise. the contact patch array can be supported by a suspension connection separate from the primary suspension connecting to the thin wheels their selves. the smoother energy transfer around turns can also be a selling point for the unique feel of it.
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