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Actually, spoiler not useless on E36 (more) (archive)

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Posted by Seb on February 08, 2000 at 19:16:25:

In Reply to: Do I have the only M3 w/o a rear spoiler? posted by JonC on February 07, 2000 at 09:31:46:

I guess you guys followed the Audi TT disaster, which shows we have reached the stage where the designer and marketing people rule over the engineers. Our E36 cars have very similar problems to the Audi TT. Despite the BMW's 50:50 weight distribution, there is an extreme lift on the rear axle at high speeds, which (especially on M3/4) can be attributed to the missing rear deck spoiler. Once Dr. Reitzle was asked by a German car magazine to give manufacturer's data about the M3's up-lift forces at different speeds, which he denied, joking that he'd like to keep a few secrets to himself. He pointed out, however, that the (Euro) M3 is speed-governed at 250 km/h (unlimited top speed: 281 km/h), although BMW's competitors (Audi S-Models, Mercedes AMG) all did not speed-limit their models in Europe. If I remember correctly, Motor-Kritik (German carmagazine) tested some M3's back in 1996, and came to the conclusion that a rear deck spoiler reduced the uplift on the rear axle very significantly (don't remember the figures).

I think this speaks for itself (although, personally, I don't really like the looks of a rear-deck spoiler..): Get a rear-deck spoiler, if you don't want to throw your car into the seeds in a fast (Autobahn or track) curve.

--Seb


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