The best advice I can give, is not to have worn tyres at all, be them on the front or the rear. I can't remember when I last tried to extend the life of a tyre by wearing them to the limit. Not worth it at all.
Also, I don't think I've ever aquaplaned. If I have, it had no affect and I never noticed.
Grip on a dry road is better with slicks, but as soon as there's any wet or damp, you need tread. The legal minimum of 1.6mm tread depth is just that ........... an absolute minimum, not a target.
That's good advice.
The wider your tyres, the greater the risk. 1.6mm might have been sufficient in the days of 135x13's, but modern tyres need more tread depth to give the same aquaplaning resistance.
The only time I've had a serious aquaplaning issue was in the late '80's on an inherited company-owned Cavalier SRi. The tyres were down to 2mm and they refused to replace them as they were technically still legal and the car was due for replacement in a few weeks. On wet roads, at anything above 50mph even gentle manoevuring or braking could easily have put it in the ditch.
Six weeks later it was replaced by an only slightly less knackered Mondeo which shed its clutch the week after I got it. I left the company shortly afterwards.
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