Quote:
Originally Posted by Spektyr
It's up to you what you do on your car, I just wouldn't personally recommend anyone operate their vehicle in a way that's likely to cause damage to it and/or increase the opportunity to create an unsafe situation.
Since I'm not the sole driver of any of our cars, I'm certainly not going to do anything that risks compromising the tires of a car my wife will drive.
There's also the perspective that taking risks with your tires has the potential to endanger other drivers on the road, should those risks turn out poorly and a sudden failure result then, or in the future. Different people have different comfort levels with that concept, and different levels of confidence (and justification for that confidence) in their ability to mitigate that risk to others.
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You do you. Like I said, on the occasion you need to do it, it isn't as detrimental as it is being made out to be. I have gotten about 20-30k miles out of each set of my street tires on a track alignment and winter driving. If it is that much of a concern get another set of wheels for tires matching the conditions you intend to drive in. Gen 1 wheels are almost free. Both of those pictures are not the norm, they were, "oh shit, this is my only choice so here we go." The second picture I had to go nearly 50 miles. I actually have a set of winters now.
Also, from google. I am sure this is pretty loose approximation and will very on brand and TW rating.
Rubber compounds have a physical feature known as a glass transition temperature, below which the mechanical properties of the rubber change significantly. All season tires will experience this glass transition temp closer to 0 degrees F., while summer tires will experience it in the 20-25 degree F.
Dunlops warning on the Z3, 200TW commonly used for track days.
Note: Tires exposed to temperatures of 20 degrees F (-7 degrees C) or lower must be permitted to gradually return to temperatures of at least 40 degrees F (5 degrees C) for at least 24 hours before they are flexed in any manner, such as by adjusting inflation pressures, mounting them on wheels, or using them to support, roll or drive a vehicle.