I can tell instantly.I guess the fact I can't tell the difference without looking REALLLLLYYYYY hard means I made the right choice not spending the money.
I have a vehicle with even lower profile tires and have had zero problems. Maybe I'd be concerned if I drove a lot in winter areas that are prone to pot holes, but I don't.Potholes can tell without looking.
"Low profile" covers a lot of different sidewall heights.,,,
My son had a used Volvo C70 with low profile tires as his first car. In the two years he drove it, he had 4 flats due to road hazards, all of them through the sidewalls. So I guess YMMV.