Anyone know anything about tyres for a CB500, need to get one tomorrow. Presently have a MT75 110/80/17 on the front (new) and was gonna put a MT75 130/80/17 on the rear as the Honda books says But would like to get over to BT45's so was gonna mix for a while... you thoughts? And anyone tried going up to a 140/80/17 (looks close to chain gaurd) and were there any probs? TIA, D