Most scissor lifts run on non-marking solid rubber tires. That is the short answer, and it is correct for the majority of machines — the electric slab units you see

On almost every machine category, a tire is a wear item: it wears out, you replace it, and the specification matters mostly for cost per hour. A scissor lift is

A car tire runs at roughly 30 psi. A pneumatic forklift tire runs at three to four times that — commonly 90 to 120 psi — and this is not