for unsealed but properly maintained - typically this means fine gravel & hardpack - then normal tires are fine. for what I call offroad (bit of mud etc) then normal tires are a pain so something more chunky would be nicer (Kenda big block K784 are a extreme example of this) but wouldn't recommend for lots of onroad. I stick with my Pirelli Diablo because although I do regularly lots of unsealed it's when I'm on sealed roads pushing really hard that I need maximum grip.
and suspension as RRider mentions ... the real problem is the 6.5cm of travel. both stock and aftermarket have the same travel. the rubber stopper at the end of the stock is thicker and softer so not as harsh when you bottom out when hitting a pothole too quick. but with aftermarket and their firmer rubber stopper, if you set the compression a bit firmer than stock then you're less likely to bottom out but is bouncier - it's a trade off. also using the preload on the aftermarket is handy for getting a better balance of extension/compression.
but more important than tires is practice in particular reading the road surface
there's some slippery mud halfway through this clip of a ride
⚠️ Last edited by SteelBytes on UTC; edited 7 times