The 1970 Isle of Man TT, the fourth round of the 1970 Grand Prix motorcycle racing season, involved a number of races on the Mountain Course on the Isle of Man.
German pairs won both sidecar events; Klaus Enders and Wolfgang Kalauch in the 500 cc and Siegfried Schauzu and H. Schneider in the 750 cc.
Braun's victory was notable because he was one of only seven riders to have won an Isle of Man TT race in their first attempt.
[1] Due to the circuit's 37.7 mile length, it usually takes competitors two or three attempts before they learn its nuances.
There were six fatalities among the competitors, including world championship contender Santiago Herrero, making this the deadliest year in the history of the Isle of Man TT.