| Rank | Board name and description | Posts | Members |
| 1 | Motor-talk.de German automotive discussion forums | 31542235 | 2019512 |
| 2 | Forum Auto Automotive discussion (in french) | 24412819 | 427603 |
| 3 | Elaborare Italian car and bike tuning community | 14483807 | 77343 |
| 4 | Thumper Talk Motocross message boards | 9660465 | 321222 |
| 5 | Daidegas Forum Motorcycles forum (in italian) | 6926363 | 182817 |
| 6 | Motor Forum Dutch motors discussion forums | 6160039 | 50545 |
| 7 | Gixxer Suzuki GSX-R enthousiasts message boards | 5369811 | 165447 |
| 8 | Adventure rider Adventurous motorcycling forums | 4980489 | 49236 |
| 9 | R1 Forum Yamaha R1 motorbikes message boards | 4967850 | 119969 |
| 10 | Visor down Motorbikes message boards | 4846421 | 46826 |
| 11 | Stunt Life Stunters and motorcycling forum | 4229867 | 93747 |
| 12 | Cycle forums Sportsbikes and motorcycling message boards | 4080504 | 77518 |
| 13 | The Sportbike Network Motorbike racing and performance forum | 4009188 | 100207 |
| 14 | Sporthoj Swedish sportbikes forum | 3864432 | 43032 |
| 15 | Exriders Honda motorbikes discussion forums | 3825138 | 100352 |
| 16 | KTM Talk KTM motorcycles forums | 3799290 | 122447 |
| 17 | Harley Davidson Forum Harley Davidson owners forums | 3683780 | 69352 |
| 18 | Cycling Forums Cycling and bike racing message board | 3606445 | 181021 |
| 19 | BARF Bay Area Riders Forum | 3274696 | 22566 |
| 20 | 600RR Honda 600RR enthusiasts community | 3029919 | 58146 |
| 21 | Ten Tenths Motorsports message board | 2988273 | 35477 |
| 22 | Singapore Bikes Singapore Bikes Forum | 2945448 | 36368 |
| 23 | MoppeNet Scooter and Moped forums | 2785708 | 20816 |
| 24 | Performance forums Cars and motorbikes performance forums | 2675856 | 40067 |
| 25 | Aprilia Aprilia motorcycle and scooter discussion board | 2665154 | 63503 |
| 26 | KawiForums.com Kawasaki ATV Forums | 2575343 | 34338 |
| 27 | UKGS'er BMW GS motorcycle community | 2475301 | 12323 |
| 28 | Labusas Suzuki motorcycles message boards | 2390952 | 32951 |
| 29 | R6 Forum Yamaha R6 forum | 2243835 | 70382 |
| 30 | V-Twin Forum Harley Davidson forum | 1956117 | 100598 |
| 31 | 1000rr Honda CBR 1000RR motorcycle forum | 1909688 | 28984 |
| 32 | R6 MessageNet Yamaha R6 owners community | 1903305 | 43166 |
| 33 | Goldwing Facts Honda Goldwing forums | 1518440 | 39690 |
| 34 | Sportbikes.ws Sportbikes discussion board | 1513464 | 37636 |
| 35 | Auto Roule French automotive forums | 1343856 | 5688 |
| 36 | Pacific Northwest Riders Motorcycle rides forum | 1330908 | 10465 |
| 37 | Dirt Rider Motorcycle racing message boards | 1204275 | 106491 |
| 38 | Ducati.ms Ducati message board | 1183918 | 39302 |
| 39 | TLZone Suzuki TLR / TLS motorcycles forum | 1128260 | 20344 |
| 40 | eSportbike Sportbikes message board | 1081560 | 54964 |
| 41 | New England Street Riders Motorcycles forum | 1029917 | 5322 |
| 42 | GSXR Suzuki GSX-R forums | 1015835 | 56834 |
| 43 | Zuwharrie Suzuki Off-Road vehicle forum | 996485 | 14489 |
| 44 | Blue traxx Yamaha ATV Forum | 897041 | 23749 |
| 45 | Sportbikes.com Motorcycles message board | 702654 | 45103 |
| 46 | ZX Forums Kawasaki motorcycles discussion board | 682883 | 40297 |
| 47 | Sportbikeworld Sportbike message boards | 471992 | 57421 |
| 48 | Forums Hawaii Hawaiian automotive community | 324678 | 35293 |
| 49 | Sport Touring Sportbikes riders forums | 18050 | 1896 |
| 50 | Motorsport Forums - discontinued Car racing and rallying discussion board | 8459 | 19829 |