Yes we do have tyres here Gav.
But as the well travelled TonyS noted, they seem to attract a rather healthy price down under. I don't really get into tyres much, although I do offer them as part of a bigger project build, as a matter of service. But between high prices and horrific transport costs, they are the rubber version of black gold in Oz.
My last set of six cost me $3000, which makes you cry when you slice them on a rock etc.