Pata Honda's Leon Haslam ended his second test on the Fireblade with a crash after trying the softer Pirelli tyre option at the end of day two.
The Derbyshire rider had spent all the available dry track time, which was pretty limited, getting used to the hard tyre and how it behaved with a new swingarm and then switched to the softer tyre.
"I did a few wet laps on Wednesday but it was only to get more accustomed to bike. When the track finally dried we got to try a load of different stuff and did everything on the harder tyre, which felt good. When I went out on the softer tyre, I lost the rear going into turn one and the bike ended up in the barrier and too badly damaged to repair," said Haslam.
"The boys got the spare bike ready but it was quite different and there really wasn’t much time left anyway, so it was quite frustrating in the end. The one lap that I did on the softer tyre told me that the swingarm felt much better, so I’m looking forward to trying that with some other new parts at Jerez."