| Rank | Board name and description | Posts | Members |
| 1 | Motor-talk.de German automotive discussion forums | 36519249 | 2296140 |
| 2 | Forum Auto Automotive discussion (in french) | 24412819 | 427603 |
| 3 | Elaborare Italian car and bike tuning community | 14595241 | 78893 |
| 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 | 5834475 | 184451 |
| 8 | R1 Forum Yamaha R1 motorbikes message boards | 5384315 | 127667 |
| 9 | Adventure rider Adventurous motorcycling forums | 4980489 | 49236 |
| 10 | Visor down Motorbikes message boards | 4846421 | 46826 |
| 11 | Stunt Life Stunters and motorcycling forum | 4241846 | 97724 |
| 12 | Cycle forums Sportsbikes and motorcycling message boards | 4080504 | 77518 |
| 13 | KTM Talk KTM motorcycles forums | 4032223 | 128672 |
| 14 | The Sportbike Network Motorbike racing and performance forum | 4009188 | 100207 |
| 15 | Exriders Honda motorbikes discussion forums | 3924388 | 103097 |
| 16 | Sporthoj Swedish sportbikes forum | 3864432 | 43032 |
| 17 | Harley Davidson Forum Harley Davidson owners forums | 3683780 | 69352 |
| 18 | Cycling Forums Cycling and bike racing message board | 3606445 | 181021 |
| 19 | 600RR Honda 600RR enthusiasts community | 3444842 | 66442 |
| 20 | BARF Bay Area Riders Forum | 3274696 | 22566 |
| 21 | Ten Tenths Motorsports message board | 3216581 | 38643 |
| 22 | Singapore Bikes Singapore Bikes Forum | 2945448 | 36368 |
| 23 | UKGS'er BMW GS motorcycle community | 2867461 | 13937 |
| 24 | KawiForums.com Kawasaki ATV Forums | 2800062 | 34338 |
| 25 | MoppeNet Scooter and Moped forums | 2785708 | 20816 |
| 26 | R6 Forum Yamaha R6 forum | 2712802 | 82104 |
| 27 | Performance forums Cars and motorbikes performance forums | 2675856 | 40067 |
| 28 | Aprilia Aprilia motorcycle and scooter discussion board | 2665154 | 63503 |
| 29 | Labusas Suzuki motorcycles message boards | 2558610 | 18684 |
| 30 | V-Twin Forum Harley Davidson forum | 2125703 | 109438 |
| 31 | 1000rr Honda CBR 1000RR motorcycle forum | 2059171 | 34292 |
| 32 | R6 MessageNet Yamaha R6 owners community | 1904055 | 45053 |
| 33 | Goldwing Facts Honda Goldwing forums | 1719900 | 44165 |
| 34 | Sportbikes.ws Sportbikes discussion board | 1517719 | 38039 |
| 35 | Ducati.ms Ducati message board | 1487180 | 49036 |
| 36 | Auto Roule French automotive forums | 1343856 | 5688 |
| 37 | Pacific Northwest Riders Motorcycle rides forum | 1330908 | 10465 |
| 38 | Dirt Rider Motorcycle racing message boards | 1213924 | 107877 |
| 39 | GSXR Suzuki GSX-R forums | 1169079 | 65108 |
| 40 | TLZone Suzuki TLR / TLS motorcycles forum | 1128260 | 20344 |
| 41 | eSportbike Sportbikes message board | 1083329 | 55360 |
| 42 | New England Street Riders Motorcycles forum | 1031729 | 5328 |
| 43 | Zuwharrie Suzuki Off-Road vehicle forum | 996485 | 14489 |
| 44 | Blue traxx Yamaha ATV Forum | 897041 | 23749 |
| 45 | ZX Forums Kawasaki motorcycles discussion board | 840506 | 47331 |
| 46 | Sportbikes.com Motorcycles message board | 702654 | 45103 |
| 47 | Sportbikeworld Sportbike message boards | 473234 | 60432 |
| 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 |