In nyc you just bring them in and they give you new ones no questions asked….i don’t install myself but I bring the old ones back after paying for new ones and get full refund straight out the register again no questions asked….sorry they do ask for phone number for warranty lol
I think they look up your account to see when they were purchased. I never had issues replacing pads but if it’s more than the recommended years from the company then you’ll have a harder time using the warranty.