I have size 15 as well. The barricade 6's did my two toe nails in two consecutive days. Went to Nike and no problems......well........no more black nails. My big toe nails were always sore.
Rewind a bit. I had ingrown nails when I was 18 and had the sides of each big toe cut and the root killed. I didn't want to have the whole nail removed back them. Problem solved.
Fast forward. Toes hurt as I got older and when the adidas caused both nails to fall off, my feet felt wonderful. As they grew back......pressure and pain.
Off with both big toe nails for good this year. Now i am Pain free....
HEAD GRAPHENE SPEED PRO LTD
SOLINCO SILVER ROUGH 16LG @ 55#