Both answers are necessary standards to ensure technical safety for car wheels.
Sufficient quantity, enough pressure, correct tire size of manufacturer or specification; side guide wheel tire of same type, same tread height<1 > do not use a fill tire; tire that does not wear to the manufacturer's wear indicator, does not crack, breaks, blisters expose the membrane fibers.
Rims, rim discs of the correct type, no cracks, cracks, warping; wheel turns smoothly, does not get stuck or rub against other parts; hub is not damaged relay; firmly installed, full of clamping details and prevent loose.