Small wheels best grip?

[frame]

oh and i forgot hollow wheels exist:

DIY Wheels - Hollow Wheels - Very Comfy

First, I don’t know if this is the right place to post. It is a DIY build, not a skateboard, but wheels. Feel free to move if I screwed up. I’m Doug. I’ve been working on this project for the past 2 years. I made hundreds of molds, made possible by 3D printing and then cast urethane into it. I took the most popular wheels on the market and redesigned them and also drew inspiration from my past engineering experiences in engine design and also suspension engineering when I worked on a small open-…

also a decent option for grip, but not sure about loose sand, gravel / wet road performance, probably still better than thane tho