Originally Posted by makeinu

I think those are more likely scooter wheels than skate wheels and as small wheels are quite common among hand carts, fork lifts, and other devices designed to carry extremely heavy loads, I'd be very surprised if they could damage brick. I can, however, think of more than a few bicycle frames that would be damaged by a 120kg rider. I obviously haven't done the engineering myself, but if your calculations were even close then old men with canes would be wreaking carnage the world over.



And? The fact of the matter is that polyurethane is perfectly suited to the very gentle demands of small wheel cycling and, while you're perfectly free to fuel your doubt with ignorance, there's no rational reason to think otherwise.