@Umeshg.
I can't give much advice other than:
My new wheels are FG F1 wets - because I'd got them handy - but you also need FG wheelsquares.
Since then I have superglued extra rubber to the orig tyres and spun them down on a lathe.
For spares search "Kyosho GC" on ebay. You'd better be patient and have deep pockets.
Other than that, strip, clean, put pack together, enjoy.