I know a good visual clue to bad mounts can be seen on non m engine mounts as they will create a hole in the hood insulation right above the power-steering reservoir cap. I changed mine out in the blown 330ci at 120k
On my current m3, @ 40k miles, last time I chcked it looked good will be looking for one at around 60k with new spark, and general maintenance
"Player-haters turning bitch like they have vaginas ‘Cause we see them dollar signs and let the cash blind us.
Money'll brainwash you and leave your ass mindless..When snakes slither in the grass spineless.."