I wanted the tires to fit the wheel better, the Toyota Tundra has a good offset in the fender so I tried these spacers. I installed them myself, tightened them to the required spec and they seemed to work great. I was very happy with how they changed my offset. Everything was fine and I worked with them for a month without any problems. I took my truck to Les Schwab to spin the tires and I heard a clicking noise coming from my left front, so I did an investigation at home and found that Les Schwab threaded one of my cross-thread nuts about 1/8th of the way down and left her. there. I picked it up and they ended up breaking a bolt on the spacer to take it off so I just took them all off. This is probably not the spacer's fault, but a warning to be careful who you let work on your car.