I wonder if "modern" tyres have a harder life than those of old,after all even moderate driving,ie speeds.acceleration,cornering have increased by virtue of improved suspension, softer compounds, plus bad roads etc. For those of us old enough and able to remember and I for one do you had to be a bit slower on corners etc or you did end in the ditch! A heavy car like the 75/ZT and about 20/30000miles/3years is about the reasonable figure. Chris.S.
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