Review on THULE KONIG CG 9 Snow Chains by Mark Howard

I used chains on my recent trip to Tahoe this weekend and they worked great. I was able to install the tracks in less than 5 minutes and got me to my destination with no problems. However when I removed the chains there were some pretty big scratches on my rims! I drive an Infiniti G35. I used the scratch resistant bumper included in the kit but it didn't really work as advertised. It was really disappointing. I have written to Thule and am waiting for a reply.