Measured the ride height of my E86 and the rear is higher than I understand it should be. Measuring from wheel arch to the lower rim I've got 610mm on the right side and 615mm on the left side (fronts also have a slightly lower right side). The car is a sport so believe the the rear height should be 588mm. I have just checked the rear springs and they have three dabs of blue paint on that confirms them as sport springs. I had hoped to find non sport springs as this would explain the ride height, but I am now confused as to why its riding so high.