I have Sram Rail 50 wheels (650B) with a 2.4 Ardent Exo TR on the rear and it comes up at 60mm knob to knob,carcass is 57mm and weighed 762g. Not had chance to try it yet :| (parents not playing ball,both quite frail)but all being well this weekend. Went up very easily,fitted it lubed the rim with Stans and used a Co2 to bang it up,let the air out added some Stans and Bob’s yer uncle. Was fancying the Hr2 3C combo but want to see if it’s Ok with my 2.35 Hans Damph on the front first. Let me know how you get on with the Hr2 exo 3C on the front and what size they come up at please. Oh and actual weight. Ta