[ghettoCoder]

Like most things in life there's a wide range of skill even in licensed mechanics. Add to that the current trend of paying auto techs by the job instead of hourly in many dealerships and you have licensed techs rushing through jobs or low-dollar jobs done by apprentices.

That's how you get wheels falling off from not being torqued, bearing failing prematurely, brakes improperly adjusted or pads popping out, and the list goes on.

Unless you have a tech you know and trust (preferably an independent garage) do not rely on the fact they are licensed to guarantee safety. I could spend the next hour listing off instances of shoddy or incomplete work by licensed folks.