I have a 05 r50 and my tire pressure light has been on for 6 months even after I check my pressures and the abs light turns on after I hit the smallest bump in the road. The past week my abs has started randomly turning on under normaly braking as well. I have checked my pads and they are fine.im getting new rims and tires so I just want to solve this problem at the same time

 

Have you looked at the sensors? Sound like one is loose and/or going bad.