I amwondering if there are reasearch how much tyres warnout and their durability. Is there any kind of survey as to how much footwear suffer. It will help let governments understand how much poor who walk have to pay to give road to motorists, especially in developing countries.

Could someone please help me on trying to find how much pressure is put on the foot when wearing high heels. I’ve hypothesised that the taller the heel-the bigger the angle-the worse the pressure.
So if anyone could help me workout, give me some suggestions-ANY FORMULAS??-that would be great!

I am 22 years old and want some cute wedged sandals but don’t want ones that are too high as I am 6’1″ tall already.