What are the advantages of both and disadvantages of both. Do full size spares off longer range in driving compared to donuts? I know that VW after 84 changed their cars to donut wheels, but I do remember the MKIV commericals saying they had full size spares. Why would they change to a donut wheel then revert back to full size later on? My Scirocco has a full size, Our old Eurovan did and the Quantum had a donut/