alex, countach & ramon thanks
ramon, this is how the wheels look like when i got it, no bolts, only 4 air valves were provided
the round hex from top studio are rubber backed, no need to cut, also available in hex
http://www.hobbyeasy.com/en/data/48680.html
http://www.hobbyeasy.com/en/data/48679.html
A bit updates:
Original seat, nice but lack of detail
so i add some lining using stretch sprue
position and glue the bottom first, then align with masking tape
apply thin cement along
this is the thin cement i'm using, equivalent to tamiya's thin cement
there should be extra stitched panel, so i draw line using masking tape
cut along the line using modeling knife
then i re-scribe the line
this is how it looks
also i scribe the back where the carbon fiber will be