I built the car perfectly standard to the 'kit'. The wheels though are just flat disks, part of the chassis. They actually look ok from some angles, but from most, if it was a real car it would look like it has plywood wheels! So i decided to pimp my ride a little!
Since i printed two copies, i used sections of the spare chassis as 'tyres', and cut out the bits of wheel i'd need. Initially, the tyres had a whole bunch of tabs. But that was a disaster. I came apon a neat solution, As seen in the pics. Tyres are strips 10mm x about 24mm, plus a bit of a tab on the ends.
I attached a little tab on the inside of the wheels, both the original and the inside ones. Then lining everything up, i glued the 'tyre' to the tab on the original wheel first. The tabs are inset just enough to allow the tyres to be flush. When that is dry, then i glued the tyre tabs down, tucking them in nice and neat so the tyres apparent diameter wasn't bigger than the wheel. When i did this, i used the inside wheel to make sure the tyre was spaced properly, but didnt glue them yet. If you have more than a couple of things gluing at the same time it becmes quite difficult to keep everything lined up.