I bought two sets (4 washers total) 5 months ago and today I drove 5000 miles to change a tire and one of the bolts broke when removing the wheel, the others 3 spacers are fine. I hope Rugged Ridge lives up to the warranty. Edit: I changed my rating to 4 stars because Rugged Ridge gave me a guarantee and sent me a new kit. I'm still disappointed that the bolt broke after 5 months but good customer service goes a long way.