Ran the bike through a pile of diesel that had leaked out of one of the works hack diesel forklifts. Back tyres been splashed,looking at a 1/3 pattern 2" up the sidewall.(half way round) Only cpla 100 on set as replaced recently due to screw in rear - ??replace or scrub the shit out of -could be loosing c 5k otherwise. Mark.
Yeah washing up liquid or if you haven't got any good old fashioned soap works wonders as a degreaser.