Didn’t realise they were selling R8’s with 2.25″ maxxis. It does strike me as on the big side for that bike (100mm XC Hardtail?)
What rims are they on?
I know orange (used to) supply complete bikes with largeish 2.25″ maxxis on pretty narrow 17mm mavic rims, which would explain the ‘massively overvolumed feeling’
ime 19mm mavic rims with 2.25″ maxxis is on the limit (and 2.1″new/2.35″old on a 17mm)
You’ll likely find the 62a 2.1″ more expensive than the 60a 2.25″ or 70a 2.1″.
Supposidly the 62a has similar rolling resistance to the 70a and similar grip to the 60a. Though I’m going with what I remember of the marketting spiel