kool-vue supposedly shake at highway speeds, get OEM

 

Yes, they do shake at highway speeds...I had them for two days and returned them to buy the OEM tow mirrors

 

I bought mine from AmAutoParts on ebay, they are a stock replacement mirror, and are high quality. They do not shake at all.. Only had them for about two weeks or so, so we will see over time how they hold up but thus far I am happy.