| Grand Prix: | Czechoslovak |
| Flag: | Czechoslovakia |
| Official Name: | Grand Prix Brno-ČSFR[1] [2] [3] |
| Location: | Brno Circuit |
| Course Mi: | 3.357 |
| Course Km: | 5.403 |
| Race No: | 13 |
| Season No: | 15 |
| Date: | 26 August |
| Year: | 1990 |
| Pole Rider 500: | Kevin Schwantz |
| Pole Rider 500 Country: | USA |
| Pole Time 500: | 2:02.725 |
| Fast Rider 500: | Wayne Rainey |
| Fast Rider 500 Country: | USA |
| Fast Time 500: | 2:03.718 |
| First Rider 500: | Wayne Rainey |
| First Rider 500 Country: | USA |
| Second Rider 500: | Wayne Gardner |
| Second Rider 500 Country: | Australia |
| Third Rider 500: | Eddie Lawson |
| Third Rider 500 Country: | USA |
| Pole Rider 250: | Helmut Bradl |
| Pole Rider 250 Country: | Germany |
| Pole Time 250: | 2:07.404 |
| Fast Rider 250: | Carlos Cardús |
| Fast Rider 250 Country: | Spain |
| Fast Time 250: | 2:07.341 |
| First Rider 250: | Carlos Cardús |
| First Rider 250 Country: | Spain |
| Second Rider 250: | John Kocinski |
| Second Rider 250 Country: | USA |
| Third Rider 250: | Helmut Bradl |
| Third Rider 250 Country: | Germany |
| Pole Rider 125: | Unknown |
| Fast Rider 125: | Unknown |
| First Rider 125: | Hans Spaan |
| First Rider 125 Country: | Netherlands |
| Second Rider 125: | Stefan Prein |
| Second Rider 125 Country: | Germany |
| Third Rider 125: | Alessandro Gramigni |
| Third Rider 125 Country: | Italy |
The 1990 Czechoslovak Motorcycle Grand Prix was the thirteenth round of the 1990 Grand Prix motorcycle racing season. It took place on the weekend of 24–26 August 1990 at the Masaryk Circuit located in Brno, Czechoslovakia.
Wayne Gardner crashes twice in the same qualifying session, without serious injury, and Eddie Lawson highsides.
Wayne Rainey gets the start, followed closely by Gardner, then Lawson, Mick Doohan and Kevin Schwantz. Gardner through into first, Schwantz into third.
As he closes the gap to the pair in front, Schwantz's front-end tucks in and he crashes out of third place. He runs to the bike to pick it up, but it is starting to burn.
Rainey is only just managing to stay on Gardner's wheel, and eventually passes. By the last lap, Rainey is well ahead of Gardner, and he wins the race and the championship. Lawson takes third, but is absent from the podium celebrations. While it may have been a coincidence that Lawson disappeared on the day he lost his title to Rainey, Lawson had a big fight with crew chief Warren Willing about the bike and left the facilities before the podium ceremonies.[4]
Rainey: "Then, when I crossed the finish line, and I was World Champion, I had a burst of emotion. I felt really great, for about two tenths of a second. Then it was gone, and it was like – wow, what happened to everything? Here I am, with the thing I've devoted everything to win, and there wasn't anything there. It left me feeling really disappointed. It meant so much more to me emotionally losing the title in Sweden when I crashed out than it did winning it. It felt strange."[4]
| Pos. | Rider | Team | Manufacturer | Time/Retired | Points | |||
|---|---|---|---|---|---|---|---|---|
| 1 |  Wayne Rainey | Marlboro Team Roberts | Yamaha | +47:50.847 | 20 | |||
| 2 |  Wayne Gardner | Rothmans Honda Team | Honda | +2.003 | 17 | |||
| 3 | Eddie Lawson | Marlboro Team Roberts | Yamaha | +19.531 | 15 | |||
| 4 |  Niall Mackenzie | Lucky Strike Suzuki | Suzuki | +35.174 | 13 | |||
| 5 |  Juan Garriga | Ducados Yamaha | Yamaha | +42.617 | 11 | |||
| 6 |  Christian Sarron | Sonauto Gauloises | Yamaha | +46.250 | 10 | |||
| 7 | Sito Pons | Campsa Banesto | Honda | +51.386 | 9 | |||
| 8 | Jean Philippe Ruggia | Sonauto Gauloises | Yamaha | +1:06.249 | 8 | |||
| 9 | Mick Doohan | Rothmans Honda Team | Honda | +1:07.917 | 7 | |||
| 10 | Carl Fogarty | Team ROC Elf La Cinq | Honda | +1:19.415 | 6 | |||
| 11 | Randy Mamola | Cagiva Corse | Cagiva | +1:38.932 | 5 | |||
| 12 | Ron Haslam | Cagiva Corse | Cagiva | +2:06.055 | 4 | |||
| 13 |  Marco Papa | Team ROC Elf La Cinq | Honda | +1 Lap | 3 | |||
| 14 |  Eddie Laycock | Millar Racing | Honda | +1 Lap | 2 | |||
| 15 | Rachel Nicotte | Plaisir Vitesse Internationale | Plaisir | +1 Lap | 1 | |||
| 16 |  Cees Doorakkers | HRK Motors | Honda | +1 Lap | ||||
| 17 |  Martin Troesch | Honda | +2 Laps | |||||
| Ret | Kevin Schwantz | Lucky Strike Suzuki | Suzuki | Retirement | ||||
| Ret |  Karl Truchsess | Honda | Retirement | |||||
| Ret |  Alex Barros | Cagiva Corse | Cagiva | Retirement | ||||
| Ret |  Andreas Leuthe | Librenti Corse | Honda | Retirement | ||||
| Sources: [5] [6] | ||||||||