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Message: <blockquote data-quote="Binastro" data-source="post: 3600887" data-attributes="member: 111403">Our Saab had almost complete tread separation at motorway speeds. A good quality Michelin tyre. Perhaps half the tread parted.I wasn't driving, but the driver skillfully kept control.We change tyres well before the necessary 1.5mm tread etc. Also uneven side tread wear and we change tyres.Always balanced properly.One day our old Saab 99 was parked at the back. Getting in the car something was odd.All four wheels were neatly supported on piles of house bricks. No tyres at all or wheels. Strong thieves. We then bought anti thief bolts, but these are not totally safe either.One day the driver opened the Saab door and was about to start it. It wasn't our car, but an identical one parked very near ours.Every morning, always, I would go round my car visually inspecting the four tyres.I repeatedly point out underinflated tyres to drivers. Women go berserk thinking I am about to accost them. They drive off, no doubt to have the tyre fail on the motoway.Even if I see a tyre low pressure on a parked car I will inform the owner.It is astounding how many people drive around with faulty tyres.We anyway keep our tyre pressures slightly high. Better control but slightly less comfort.The only contact with the road is with your tyres.Even total brake failure is more acceptable than tyre failure at high speeds.Also the tyres must be fit for the car's maximum speed.In Scandinavia tyres fail at minus 40 degrees. The rubber gets too brittle. I suppose Canadian winter tyres are specially made.I had a set of 4 studded tyres fail from age even stored horizontally.With binocular FOV. The observer's pupil size also causes changes in measured field sizes.</blockquote>

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