I'm putting the wheels on a full crank I have here in the morning and my grandson is going to give them a workout on some long grass that hasn't been cut for quite a while. See how they stand up. One concern I have with the stud adhesive is that the blue colour will probably start to show through once the stones etc start hitting it. Maybe the stud adhesive with a smear of black silicone over it might work. Has to be an answer somewhere