many carefree miles on my carbides, and i have been over the mat lots. the 800 just keeps on rolling thru all that clatter just fine this year. i wish i would have checked carbides before and after, seemed to have lost quit a few chunks somewhere this snow covered week. in the days of hub caps on cars you could always see the bad potholes. i know i know, saw the video. any one out there maybe have a similar experience on the bridge?