There is a guy on E-bay that sells what is called horse shoes, basically a pastic/nylon type material that bolts to the bottom of the bumper that will contact the ground and slide instead of damaging the painted bumper.

He has them for Gallardo's but they require you to drill and bolt them on, it doesn't use existing holes or mounting locations.

His contact info is in this E-bay listing, note the auction is for F-cars but the description indicated Gallardo's as well. I have contacted him and he does in fact carry for Gallardo's for around the same price as the F-cars.

http://cgi.ebay.ca/ws/eBayISAPI.dll?...DME:L:RTQ:CA:1