Forums in Motor Sports

1. KTMTalk.com
This is a discussion forum for owners of KTM's.
https://www.ktmtalk.com/  

2. 10-Tenths Motorsport
TenTenths Motorsport Forum. Thousands of users, OVER 3 million posts on motorsport around the world. NASCAR, Formula 1, CART, IRL, A1 GP, you'll find them all at Ten-Tenths.
https://www.ten-tenths.com/forum/  

3. TrackForum
The number 1 IndyCar discussion forum
http://www.trackforum.com/forums/  

4. The Dirt Bike, MX & Off-Road Forums @ DirtRider
Dirt Bike, Motocross, Supercross, Off-Road Motorcycle Community - Since 1999
http://www.dirtrider.net/forums3/  

5. - Speed Talk
Forum has 822,218 posts.
https://speedtalk.com/forum/  

6. Cycle Forums: Motorcycle and Sportbikes Forum
A forum community dedicated to all motorcycle owners and enthusiasts. Come join the discussion about performance, reviews, racing, touring, modifications, classifieds, troubleshooting, maintenance,...
http://www.cycleforums.com/forums/  

7. Pashnit Motorcycle
Discussion forum for California Motorcycle Roads & Pashnit Tours
http://www.pashnit.com/forum/  

8. WrestlingClique Wrestling Foru
Wrestling Clique, the best wrestling forum to discuss professional wrestling. WWE, NXT, NJPW, AEW, Indies, Be the Booker, Efeds and more.
http://wrestlingclique.com/forum.php  

9. NESR Forums
New England motorcycle forum.
https://www.nestreetriders.com/forum/forum.php  

10. Sportbike Racing Forum
Forum has 55,462 members.
http://www.esportbike.com/forums/  

11. Tampa Racing
Tampa Florida website dedicated to automotive and racing enthusiasts.
https://www.tamparacing.com/forums/forum.php  

12. Audi TT Forum
A forum community dedicated to Audi TT owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!
https://www.ttforum.co.uk/forum/  

13. Invision Power Board
Forum has 173,465 posts.
http://forum.chumpcar.com/  

14. www.hdforums.com
Harley Davidson news, rumors, and discussion for owners and enthusiasts.
https://www.hdforums.com/forum/  

15. Texas Racing
Texas Racing
http://www.texasracing.us/forums/index.php  

16. IPS Driver Error
http://pitboard.co.uk/