I hv an 08 base model and the front end shakes above 40, not a violent shake but enough that its annoying. Here's the strange thing, when I take off any of the front tires it will stop for about a day or two then come back. I changed my rims and tires to see if that was culprit. That didn't do anything. I've tried it many times taking the tire off and every time it went away temporary. I know my struts needs changing but their not singing yet. Any ideas