Seriously, if your car's new wheels are vibrating, you need them. I've had vibrations for years after new wheels. Nothing seemed to fix the vibration. After the last balancing and turning it got even worse. I couldn't go past 60 despite being 70 and the steering wheel shaking out of my hands. The sellers mentioned that I should have these centering rings. It took my son less than an hour to mount them on all four wheels. Just put them in their place, put a board on top, e.g. B. Take a six to eight inch board and gently tap the board with a rubber mallet. The vibration is almost completely gone, I don't know if it's the 11 year old car or the damage on the old tire bouncing up and down from thousands of miles because the wheel wasn't trued. Nevertheless they work. The rest of the vibration is barely noticeable. I should have gotten that years ago.