I would go right to Duratrax for some of their 3.8 monster truck tires. I've used the Duratrax basher tires in smaller sizes and their rubber compound is by far the softest, stickiest compound I've ever used in a basher. I think their compounds are the same as what they use on their crawler tires.
The 2.2 Six Pack tires that I put on my Q46 literally stick to my tile floor and I have to forcibly pull the tires off the tile.
I bet a set of Six Packs or Lockups would work really well as a crawler tire, especially if you can replace the foams with something softer.
https://www.duratrax.com/tires/3-8monstertruck.html
The 2.2 Six Pack tires that I put on my Q46 literally stick to my tile floor and I have to forcibly pull the tires off the tile.
I bet a set of Six Packs or Lockups would work really well as a crawler tire, especially if you can replace the foams with something softer.
https://www.duratrax.com/tires/3-8monstertruck.html