MDM off 100% of the time if you want maximum performance from your car even in the wet.MDM is way too intrusive to get even near the limits when it is on.The other big problem with MDM on is that your brake temps will be much higher as the yaw control uses the brakes to intervene.If you are concerned about your ability to control a slide,invest the time & money in learning skid control.Most proper schools will have at least 1 skid pad session to teach the basics of car control.Besides its a lot of fun to slide an M around
