Wally,
I'm on the Gold Coast, no snow up here either. Bummer. Soon to go onto level 5 water restrictions. Can't wash your car, even with a bucket! I also have 19" wheels. What are your original equip' tyres that have lasted 60.000km? Are they Yokohama Advans? Can get the Advans from Bob Jane for $520 rear and $460 front. Replacement Bridgestone Turanza's $705 rear and $685 front. A no brainer if noise, handling and wear are all equal.
Colin.