Hood and fender shake

7172 Duster, you are a very wise man. I got what you were trying to explain about the out of round tires. When I turned the corner, they may have gotten into sync with each other and then the shake went away and when I turned again, they went out of sync and the imbalance came back. Never even occurred to me. Thanks, I will relay this tidbit to my tire shop so they can understand!