i will let everyone know. but i don't consider myself pushing these tires to the breaking point. i think i was going far under that point. i had a honda valkyrie with a motortrike for 20 years. put 214,000 miles on it. the only time the backend broke loose on it was in Virginia beach trying to get back to the hotel in a frog choker. running threw 3 inches of water running down the street.
i am going to back off of this suspension though. mainly because in my opinion it is too stiff. when i hit a rough section of road the rear suspension on this thing will rock this trike side to side bad enough that my feet come off the floorboards and the fairing shakes. still waiting on my front wheel to be powder coated then its jack the backend up. install new tires and adjust the suspension.