I always glue my NSR tyres on, makes them run much smoother. Use some lighter fluid on a rag to remove the moulding release agent on the inside of the tyres, then glue with superglue. I always true the tyres to make sure they run level and all the tyre is touching the track.
The motors in NSRs have a tendency to move a little in the motor pod, so I glue that in with hot glue. Also glue the bearings by popping them out, apply a tiny amount of superglue in the gap, and pop the rear axle section back in.
Then have a play by undoing the screws until it runs how you want.