E36 rear subframe mounting points,check before they crack

the e36 rear subframe pulls away from the body on hard launches and track use. the mounting points crack in the floor pan. check by getting under the car and looking at the rear subframe bolts from underneath. any cracking in the metal around the bolt holes means its already failing. reinforcement plates welded over the top is the fix. about $800 at a good fabricator. if you ignore it the subframe eventually rips out of the car.