Right my paint work feels pretty smooth BUT the bottoms of the doors have got a few little bits of annoying tar which wont come off, clay will remove this yes?

Secondly how do you use it? just use some lube and wipe over the surface like you would when drying?

Lastly what clay would be best for a red bmw? also keeping in mind removing tar is my main concern.

Actually i think theres something other than clay you can buy for this?