I was amazed that I returned 7.1 /100 without even trying in a 2005 Lexus 330. Lots of 110 KPH and even up around the Blue Mountains. I repeated it on the way back but filled it at Seymour as the consequences are too great for a one way trip without refuelling.I have even pulled a poptop camper to Wangaratta and back and still got 10.3/100.A two way trip would be impossible I think as on a standard 70 litres one would have to average 3.5/100.Hybrids can't sustain that.Kumho tyres 18" are obtainable for $160 at Tempe Tyres in Sydney,fitted and balanced, or freighted anywhere in Australia.Cheaper by $60 a tyre anywhere.