For trail and mud, the Proline Super Swampers you had today a great. For rocks, you want the Voodoo Ottsix 1.9 KLR Gold Compound 4.7" or Pitbull Rock Beast 1.9 4.75" or Proline Hyrax G8 1.9 4.75". See onetencrawlers.com.au for those. Foams too, though the cheapie sets on asiatees are acceptable if you're doing one big order. 4.19" is max tyre outer diameter for C1. 4.75" is max OD for C2, if you want to run in comps.
Wheels can be anything, but the 'high' mass' beadlock range on asiatees are generally great value for money.
I'm trying to decide between the RTR version of this popular RC crawler and the new assembly kit. The kit comes without a few necessities, so I am trying to work out the best value when comparing the RTR, the kit with the same components as the RTR, and the kit with some popular components that are budget friendly upgrades from the RTR version. Required extras are transmitter & receiver, ESC, motor.