any 26" tire will do.
I have a torker Lx 26, I think its more of a unicycle for beginning, it’s best for learning the basics, im going to get a KH20 soon.
…as long as it’s not too wide or tall.
A 24X2.6" Kenda Kinetics will fit on one of the newer 24ers, so a 26X2.6 Kinetics should fit the 26 LX. Be forwarned, tires labeled the same width can be significantly wider or narrower than each other and therefore may not fit.
If you don’t over tighten your pedals and check them before every ride you should never have any problems w/ the pedals falling out (idling and riding backwards tends to unscrew pedals). If you want strongish, light, low Q-factor cranks get these Qu-Ax cranks.
More Q-factor is good for more control at slow to moderate speeds (although some don’t like it for riding skinnies). I’ve never ridden a uni w/ too much Q, for me, but I’ve ridden a lot w/ not enough.
I’ve thought of getting a 26" LX for tech XC - w/ 170 mm Prowheel cranks, 2.6" Kenda, and low profile Kona Wah Wah pedals.
The LX saddle is realatively well shaped, but way too hard IMO and no channel for blood flow.
Poor man’s Freeride - I’ve thought of drilling a grid of small holes every centemeter and grinding out a channel in the center.
I hate rounded profile tires for muni. I’ve seen many 2.5" tires and all of them round. Though I’ve seen many narrower and wider that were square 
Try a high roller if you like a flat profile. I prefer a more round profile personally and I am loving the 2.5" michelin. I had a high roller and it drove me crazy because of the flat profile on road crown. I am converting my LX into a XC uni and changing the cranks to 125s
a gazzaloddi should fit, they’re squarer, udc still has a couple really cheap, i think. another squarer tire i have is a continental gravity 2.3, low rolling resistance, and decent grip, but i like something bouncier for tech stuff.