I have 3 (one spare) of the matt black sip alloy rims which do come with longer studs, nordlock washers and nuts, and bgm sport tyres (I now know the worst combo known to scooter man), planned on fitting the myself but not a chance in hell, even with warmth and proper tyre soap, tyre levers, rim protectors and a mb scooters wheel holder bolted down to a small bench, the risk of damaging the paint rims was way to high, tried numerous tyre fitters, car shop machines are no good, even most motorcycle shops won't touch them with a barge pole, ended up taking them to a triumph dealer to fit, cost me a bloody fortune too and they damaged the paint slightly, mainly inside though, and to top it all one leaked around the rim so had to de-bead the tyre, clean and reseat the bead, eventually got it to seal.......................leason learnt