I used to run 2.25 Ardents on my Pig – they come up big – front and rear when it was dry and stick a 2.35 or a 2.5 Minion DHF up front when it was damper – the 2.35 Minion DHF comes up small, the 2.5 is more like a biggish 2.35. Worked for me. Good balance of grip and decent rolling resistance, suited the bike.
Or Bontrager XR4s, used to come up massive in 2.2, but the latest ones are supposed to be more true to nominal size, though I’ve not used them. Again a good all-rounder, though I think the Maxxis 60a rubber compound feels grippier. Loads of clearance on a Pig out back, mate uses a 2.4 Advantage on the rear, 2.5 Minion front and likes that combination. The Advantage looks massive…