Here you see my Optima Mid Custom Special zipping around grass and loose sand surface. I tried the proline M3s and they were practically useless on these surfaces. The M3s spin like crazy and i loose a lot of grip and acceleration. With the OT-66 on optima mid rims, i have lots of punch out of the corners and much much more steering and control. In fact the car even traction rolls on certain sections. Lesson is, dont rule out old tech, they might just come in handy. Viedo taken on 3rd March 2012