[Paladin2]

Hard to believe that road surface temperatures would make such a difference.

I’ve driven on cold concrete with studded tires [ they obviously have to come off before June, most places] without trouble, though I rarely brake beyond 0.3 G in any conditions.

To use the >60% worn snows in the summer I pull all of the studs out.

[Carriage Hill]

Not road surface temperatures; it the road surfaces. Macadam is rough and studs get popped-out, while concrete is much smoother and you just slide. The sun warms both surfaces, but macadam (blacktop) is dark and absorbs more sun. On concrete you just hydroplane and slide.

Plus, both surfaces are damaged; concrete more so.

Here’s a whole set of articles on the damage studded tires do, and the hazards of driving on them on bare roads:

https://www.google.com/search?client=opera&q=studded+tires+on+concrete&sourceid=opera&ie=UTF-8&oe=UTF-8