Hello
Well the first Gullwing had to use the doors as the tubular space frame forced very high sills.
Now the new Opel is just a Formula racer with a Astra body. It uses the lower body profile for full aerodynamics and a space frame.
The competition is hard and it is a bit like in F1. You go to the max and if someone protests you go a step back. DTM history has a history in protesting ( That killed the DTM togehter with the Aufrecht/Ecclestone deal ).
Now the new rules where made to suit the interessts from BMW but they threw the henkerchief at the first round.
One reason was that they allowed the Audi TT to join the field with a streched body and a slight larger wing to compensate the bad aerodynamics. The fact is that the Audi isnīt runed by the factory. Abt is something like Ruf to Porsche.
Most Racers canīt afford the high tech series and moved to the STAR V8 shiluette series.
As far I remeber one car has to be build and sold to a privat person or a private racer. This is prototype status in most race classes.
The engines must be 4L V8 and breath trough restrictors ( 28 mm per 4 cyl like on the F3 ). This will limit the revs to some 8000/min and make the engines cheaper are the tourqe makes them more drivable.
98 ROZ Pump gas and working catalyc converters. Rumors say they have close to 500 HP
The driver sits in a carbon cevlar monoque with controled deformation crash boxes. Those boxes must cover front and rear too. Just like in the F1. Brakes are carbon like in the F1.
Try that likk :
www.dtm.de
The R200 had the same problem like the 959, they came to late. R 200 where sold off at 25% from the normal price ( In fact a full loaded Sierra Cosworth was same price level )
Right now the Renault Clio V6 Sport seem to jump into the R5 Turbo or Metro V6 gap. But in germany at the same price level you can get a slightly detuned Subaru WRX, Seat Leon Cupra or for a bit more the Audi S3.
The V6 clio is a RWD and tailhappy like the 911īs.
Grüsse