awesome review GTO!

It makes the reviews in the car mags look amateur-ish and i've long stopped watching any car show other than TG and Fifth gear.
A question on the tyres.
The 15-inchers look small for the car, but are they adequate i.e. not under-tyred? Is there a
need to upsize? How good is the rubber on them?
I'm seriously thinking of trading in my Dad's Indigo for the Manza sometime early next year and this review is pushing me harder in that direction