Often rusting begins under fender wells, where the metal is thin and weak. When balancing or rotating tires, thoroughly examine your fender wells for discoloration or deteriorated metal. Examine for signs of rust where body components meet, namely where parts are likely to experience friction over frequent use (door frame, where the hood meets fenders, around the trunk).nnOther key areas of your vehicle to keep an eye on include:nnThe spare tire well in the trunknDriver side floornFront and rear corners of the rocker panelsnThe lower sections of all corner panelsnnSpot rust repair is very similar to general paint repair. Begin by working away as much rust as possible with a wire brush. Next, knock down any remaining roughness with an abrasive grinding wheel. Cut through any paint and corrosion until bright, fresh metal is visible. Use a final round of sandpaper to achieve as smooth a surface as possible. Next, apply a primary layer of rust arrestor to your newly primed surface. Rust arrestor chemically converts rust to inhibit continued corrosion and help form the tightest chemical bond to previously damaged surfaces. Next, apply a thorough coat of primer on your newly prepared exposed metal surfaces. Follow this with a layer of paint, and lastly a clear coat to seal and protect everything.  Finally, buff the surface to evenly blend with your vehicle’s original finish.