[He nods, once. Cybertronians, he'd noticed, were a generally helpful race...which he was glad of, given that they all seemed to have been used in war. That was a fate he knew the Brave Police had been eager to avoid.]

A tire?

[For a moment, he glances down to the tires on his leg.] What size of rims? [He's not eager to give up any of his tires, but there were those cars he found in the junk pile...]