BMW was quicker round the track and in the drag race....well if it had finished it would have done. Clarkson aquaplaned and left the road sideways, and backwards and then facing the other side too.
Basically, standing water, rear wheel drive and wide tyres/run flats = aquaplane.
He then spent the rest of the show saying the 135M was stupid. Which in all fairness, it did spin and wasn't as if he could do much about it.
On the other hand, Stig didn't seem to have a problem...