I reckon 355s are tougher than Mavic 317s
Yep, reckon you’re right
I have been using the 29er 355’s for nearly two years now on rocky terrain (Cairngorms area) and had no problems so far.
Yeah, found the same when I had a set.
I’m sure a 355 would be fine, just seems a bit lightweight when matched up with Pikes and 2.35 Highroller