Best/fastest clincher tyre?

Gp5000 TT
Vitoria corsa speeds

^^^^ this.

stupid question.
Is the gp5000 tt, which is marked tr, suitable as clincher (with a tube inside)?

The Continental Grand Prix 5000 TT TR tire is a tubeless tire, but you can put a tube in it.

However, it would be smarter to use a standard clincher tire because it would weigh less.

such as what tire ?
You’re better off ignoring Jimatbeyond his advice only really works inside his own head. I’m surprised he hasn’t suggested short cranks on this thread.
He suggested the Standard GP5000 with a latex tube which would be the same weight as a GP5000TT with latex tube but measurably slower.
In theory Your less likely to picture though but the same could be said for Gatorskins.

According to BRR, the original gp5000 is actually heavier than the gp5000 TT TR (221g vs 210g).