hello! okay so ive been riding my Sym Jet 4 2010 model to college every day and that involves traveling along mainly 40 mph roads. and something slightly worrying has come up. when i get to around 40 MPH this weird noise comes from under the seat / rear wheel im not exactly sure and it feels like its vibrating. i have no idea what it is! now the bracket that supports the mud guard snapped so i thought it was that hitting the wheel... but there are no signs of wear underneath the mud guard. any help would be appreciated
take the bracket off and check the rear mudguard, i had a same problem, turns out after i changed my tires to some more grippy ones it was catching the side of the mudguard :// because after long periods of driving the tires can expand, just check for anything rubbing or wobbling, take the seat out and have a proper look at everything, maybe the real wheel bearing? im not too sure about them tho