I have been having intermittent speedometer issues with the speeds occasionally showing much higher than possible. The needle will register 20, 40 or more when stopped. I took the bike to the dealer to be checked as it is still in warranty. The service manager at the dealer pointed out that the cover on the inside of the instrument, the part with the numbers on it was slightly wrinkled. Apparently caused by heat,nearly melting, bubbling up and catching the needle sometimes. I have a Givi windshield that the factory says is the cause of the problem and so far they say it isn't covered by warranty because it isn't the stock windshield. Any suggestions or similar experiences. Searching has turned up some instrument melting issues on other BMW models.