The sound of an F1 engine firing up can raise the heartbeat by as much as 15 points. The sound of a BMW M3 engine doesn’t really compare, but there is enough latent menace in its throaty snarl to elicit a frisson of fear in the deepest recesses of the brain.

The pretrack briefing at the Bridgestone-sponsored BMW Driving Experience at Zwartkops Raceway didn’t really help to alleviate this symptom. Sure, it had been delivered in a friendly good-hearted fashion, and was fun as briefings go, but there was no hiding that track days are a serious undertaking and that the devil is often in the details...

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