Re: BMW M3 GTR sounding like food blenders...
The Jorg Muller at Spa bit is interesting. They really went all out on gear (maybe they need it for the rest of the course), trimmed out the rear wing, or the air conditions or wind direction changed considerably to allow higher speeds because they're on the limiter for a split second. They also went pretty aggressive on the brake bias to the rear. The car gets tries to come round twice under braking then you see him go for possibly about a full turn of bias adjustment to the front, with at least well over half a turn confirmed because he makes runs out of wrist rotation. Trimming out the rear wing is a possible explanation for both events - riding the limiter and getting loose under braking.