After reading couple of threads, i understand that an air compressor and a tyre pressure guage is a must before sighting any sand.
Are there any minimum requirements that i should look in a air compressure. (PSI, letres mer minute, Amp, etc) Obviously, all the affordable ones look quite small and not sure if they can do the job. Are there any well known ones that i should be looking for? 2009 i6 SE