Worn down to the canvas and steel hey.

Well if its that bad chances are you will need all 4 tyres replacing.

Falken ST115's or FK452's will be great bang for you buck.
Ring up Tempe tyres over East for the cheapest prices in Australia on Falkens would be my recommendation
Or otherwise grab something in the for sale section.

J

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"You can turn your back on a person, but, never turn your back on a drug. Especially when it's waving a razor-sharp hunting knife in your eye." - Raoul Duke