Cycling computer problem
So i have been riding about 3 months now ad my computer is recently giving me problems. The last ride and then also one a few days before that when i was done with my ride my Trek Wireless computer said my top speed was 91MI the first time and 92MI the second time. Has anybody else has a problem like this? What could be causing it? Not that its really a serious thing but I would like to know why. Thanks.