Originally Posted by
chaadster
Hmm…I thought those were 23mm external, 17mm internal. I remember Ardennes was kinda famous for being wide at 17mm, and I recall Ardeness+, intro’d in ‘13, was only 20.6mm. I don’t recall anything about Bastogne or Kermesse besides the name, but I’d double-check the stats, because I doubt they were 21mm internal in ‘09, based on my recollections of the period.
Current HED Ardennes Pro are 21 mm IW, 25 mm external; so I similarly doubt that this is a HED standard from 15 years ago.
I am currently riding 25 mm tires on 19 mm IW wheels, which seem a good compromise between handling and impact absorption for my area.