With more than 50kmh my moped is roaring (speed independent). Make me worry now that it can lie on a wheel bearing. Since it only occurs with more than 50 things (with increasing speed getting louder) I can not identify the source and do not say whether it comes from the front or from the rear or from the engine (gear?). At 100 or more I don’t hear much about it anymore, but can also be related to the generally high noise level at speed. Both wheels are fixed and have There’s no game. Chain is set right and greased. Have a bit of fear that if it’s a wheelbase and I eat it long and that goes bad. Greetings Klinky