I went to buy low profile 17" Pirelli P7 225/45 ZR17 91W, after much research and getting different quotes, I found this store to be the cheapest ($260 in April 2011), even beating other Bob Jane stores around Perth ($279, $289 etc), who refused to match their price. They put hydrogen (makes the tyres last longer, apprently) in the tyres for a small fee, and you get free refills for the life of the tyre. So far so good, they drive much better than my previous stock tyres, and also Sumitomo HTRZIII, which the top of the range, rated at 300km/hr but only lasted 18000km (mostly country driving). They are a better deal than the RAC 10% off for Beaurepairs or Bridgestone $5/tyre discount. The staff were polite and easy to deal with. Service was on time. I highly recommend this one.

Approximate cost: $260