yes, they are the main substance for wheels today
A skateboard has 4 wheels.
Wheels dont make a skateboard easier to turn on the skateboard trucks do that.
yes a shaun white skateboard is good. tough grip, trucks, wheels. and deck. nothing is wrong with it
The skateboard goes faster if the skateboards wheels are good and fast than the skateboard will go faster than a ripstick.
only when your at a park, never skate super small wheels on the street
Bones,darkstar,ricta are the top 3
yes the sizes of skateboard wheels range from 40-70 mm