I am the second registered owner and I purchased the car in May 2006 from Robert Voytcheff at
www.splendidauto.com. He had it imported from Germany. The previous owner had deregistered it every winter to spare it from German winters. Only 507 ever made. This is #37.
More info here:
http://home.swipnet.se/~w-19495/biturbo.htm
and here:
http://www.m5board.com/alpina/e34.html
360 HP, 384 TQ. Approx. 10 lbs per horsepower to weight ratio. Performance figures are similar to a Ferrari Testarossa. More power and torque than 928GT, 500E. Faster than similar vintage 911 C2, 911 C4, NSX, 348. Only one sedan of that era was faster: Lotus Carlton aka Lotus Omega.
The fronts are 235/45/17 and rears 265/40/17. Both are Y-rated.
The car is about finesse, refinement and is very, very balanced and is a pleasure to drive on the highway as it was designed for the autobahn. The car rides very low as you can see. There isn't much of a gap in the rear wheel arch. The rears uses Self-Levelling Suspension to maintain a constant rear camber regardless of vehicle load. Improper camber at prolonged high speeds can lead to tire failure.
There are oil coolers for the engine, transmission and rear differential. Aside from maintenance items and parts replacements, I have installed a clutch stop, a Z3M short shifter, Racing King's (aka Bruno's) Delrin subframe inserts
and a blow off valve (to prolong the life of the turbos and avoid turbo surge).
Enjoy!