If you're looking for the best roadrace and autocross forums on the web you've come to the right place, http://sccaforums.com has been around longer than most of the forums on the web and is the place you should come when looking for any information related to road racing or autox in the United States.
SCCAforums.com has over 11000 members with hundreds of thousands of forum posts cover all topics related to the SCCA and all road racing and autocross organizations.