Personally I find tires always seem to cost too much so I would like to post now that I have found somewhere that is both cheap and has great service. Northwest tyres.
I got all four tires changed on my porsche boxster for $550! This is after bob j and costco both quoted me around $1000. Federal too. They even helped me out with a busted lock nut for free.
Very happy to promote them!
They are in fyshwick, 110 wollongong st 02 62281428.