The listings mainly use steel and iron alloys: plain steel, alloy or carbon steel, manganese steel, and thicker iron or alloy tubing constructions are commonly cited.
Some dollies accommodate tires up to about 12" wide. Single-dolly platform dimensions commonly appear near 18" x 12", with larger platform options shown up to roughly 24" x 15".
Typical procedure: jack the vehicle, slide a dolly under each raised tire, then lower the vehicle so the tires sit in the dolly cradles before rolling.
Common features include raised anti-skid plate patterns, grooved or concave tire cradles, anti-slip rails, and locking casters or brakes to hold the dolly during movement or storage.
Key measurements are wheel diameter, bore diameter, wheel thickness, and groove width. One example lists a 1-1/2" diameter, 1/4" bore, 3/8" thickness, and a 5/16" groove width.
