Hi Max,
Stud adhesive may work it is strong and still flexible enough to take a stone impact and should be fairly light. I think it would smooth off well enough. And you certainly can't pick up a set of reasonable Victa wheels for $15 and a tub of that would fix many sets of wheels. Another alternative might be black silicone

Last edited by NormK; 15/03/21 05:48 PM.