Hi there! So there could be a couple reasons for chasing weight, but the biggest is improper weight placement or a damaged rim. Placing a weight on both the inboard and outboard parallel to each other would create a lot of static forces in the assembly so its not recommended. When you're balancing a tire, look at the center window, and it will show you how much static is left. Then you can hang the weight where it's required. If you're still having issues, feel free to give our tech support a call to help you troubleshoot further: 800-688-6359