What a great question! This Kubota has the airless tires on the front. While testing the braking force on the Kubota (over 1000 lbs of braking force on those particular tires), we noticed that our brakes worked so well that the tires were slightly spinning on the rim. Not acceptable to use on our show winch stand, so we locked them down.
No problems with the inflated tires on the other mowers what so ever, and no more problems from the Kubota after we put the bead locks on there.
I have to say that questions like that are why we post on Lawnsite.com and nowhere else. You guys are razor sharp!