Originally Posted by maxwell123455

Not too sure on the metal sound of the bike, this might just be the sound of the engine when cold as the single does rattle a bit. Either that or have a bash plate fitted as this might be loose or need some packing/rubber mounts to stop it vibing and making the rattle you here.

As for the vibs, if its only happened after you go new tyres get them re-balanced. Some times guys balance them and dont do the job properly or they put on the lead weights and they fall off down the road, in effect not doing any balancing of your tyres.

if that doesnt work, try loosening the bolts hold the bars/footpegs on and starting the bike up, and tightening the bolts back up again each a small bit at a time, ie not tightening one bolt fully up and then the other.