Ratings F.A.Q. This section is created to answer some of the most frequently asked questions we receive often about our ratings and the contents of the RV Ratings CD. Each answer link opens a new page as a pop-up. Please be sure your browser can accept pop-ups. How do you rate RV's? How do I know you are unbiased in your ratings? Why do motor homes with similar wheelbase-to-length ratios vary greatly in ratings? Why do you not consider the quality of chassis and suspension in your highway control ratings? Why does my inspection differ from your reliability ratings? When will you have the new model year available in the RV Ratings CD? Why is the RV Ratings CD only compatible with Windows and not with the Mac?