I believe (but may be wrong) the arrow is only on one side of the tyre....

I looked for one when fitting my TKC front last week and couldn't see one, so I thought I'd check the other side and found the little ******....

PHILINFRANCE, I see you live in France are you from the UK originally ? My wife and I have pondered moving out there (south west - Dor Dogne probably) what's it like ?

Off topic so please feel free to PM me.