New improved tyre (Patreon)

Ok, so version 3 or 4 of the drive system was great but wheel spins galore! So we've now got a new chunkier tyre and it looks good! Just printing the second one then I'll fit them. It worked well previously on flat surface but carpet was a struggle. Let's see how we go with these bad boys. If this works then the drive is fully complete for now (tempted to do a direct 4 wheel drive in the future. ).