ChrispenEvan said:

Kingy said:

Spiny Norman said:

Yangwang U9X (BYD) have hit over 500 KM/h in Abu Dhabi highway top-speed run. German racing driver Marc Basseng achieved the speed during a controlled highway run.

Reddit

That’s raaaaather fast.

Holy Carp. The tires!

At 500kmh the top of the tire is doing over 1000kmh and the bottom is stationary. A piece of the rubber that touches the road rotates around the axle and goes from zero to 1000kmh to zero once every(approx) 2m. At that speed it is doing the 0-1000-0kmh about 70 times per second!

That’s a very special type of rubber. Usually at that speed you need spun aluminium wheels.

only true relative to the road.

But relative to the axle it is accelerating from -500 kmh to + 500 kmh and back again about 70 times a second.

If I have my numbers right (big if), that’s about 3900g.