In Reply to: Balance and rollcages posted by Howard on January 10, 2002 at 09:11:41:
If you track the car several times a year, get a cage. You will notice the car is stiffer even with a 4-pt bolt in unit. A 6-pt bolt-in is better, and a 6-pt welded cage offers the greatest stiffness. If you roll the car, a 6-pt will prevent the A-pillars (the weakest structure in a rollover) from coming right in toward your head! Many people survive rollovers unharmed, but why risk it?
Most guys wait for months while their 6-pt bolt-in is constructed and shipped to them at great expense. If you're near south-west Virginia, go to Bimmerworld in Radford and have Barry fab up a custom 4 or 6-point. He's done many E30s in the last year, and the client list is growing quickly. He will be doing my E30 M3 in the next couple of months, whenever I can get down there for a couple days.