On Thursday, October 18, 2018 at 9:49:06 PM UTC-7, Tango Whisky wrote:
Funny though. I haven't yet seen a Ventus C with 16.6 m tips in Europe.

Wasn't it the B that had optional 16.6m tips?
The C 17.6m tips are essentially the same as the Nimbus 3 25.5m tips - without the spoileron you never hook up anyway.
The Schempp tips are more easily interchangeable than Schleicher tips.
Jim