Some more wheel hubs. Rear:
Front:
I made them so they screw onto the end of the center axle bolt, to cover the wheelnut, but if you're smarter than me you will of course know that the bolt and nut on the non-driven front axle doesn't actually rotate with the wheel, so I might have to find a low tack glue and stick them to the rim instead.
I've been trying to come up with a simple way to add baffles to the water tank without ripping it apart, and I spotted some spare separators from some component / assortment boxes. Perfect fit, can be assembled inside the tank and are easily removed for maintenance.
Video:
https://www.youtube.com/watch?v=m6BDHUII7Jo
Bonus picture. It's odd how small details change the whole truck. The black wheel hubs helps a lot with making it look heavier, and makes the wheels look less like plastic: