1991 San Marino Grand Prix was a Formula One race held at Imola on April 28, 1991.
claimed his 55th pole
position from Riccardo Patrese
, Nigel Mansell
and Gerhard Berger
. However, the warm-up lap saw
two dramatic incidents - Prost spun off the track at Rivazza Turn,
followed by Berger, who was able to continue. However Prost stalled
the engine and was an early retirement.
At the lights, Patrese took the lead ahead of Senna, whilst
Mansell, already slow off the line with gearbox problems, retired
at the end of lap 1 after a collision with Martin Brundle
. He was followed out by
who spun on lap 2 and
who spun off on lap 3
attempting a rather foolhardy pass on Stefano Modena
In a strong lead, Patrese pitted for originally what appeared to be
an early stop to slicks turned out to be more serious - a misfire
with a faulty camshaft sensor. He restarted last before retiring
for good 9 laps later.
Berger was catching Senna, lapping 1.5 seconds quicker than his
teammate. The lead was soon down to 5 seconds, with Modena a superb
third from Satoru Nakajima
of Pierluigi Martini
and Gianni Morbidelli
McLaren pitted for
tyres with Senna maintaining his lead.
Just after setting
fastest lap, Berger was delayed in traffic, held up by the trio of
, Julian Bailey
and Thierry Boutsen
. Bailey himself moved past
Andrea de Cesaris
into 6th, whilst
Nakajima retired with transmission problems.
spun into retirement from
4th to hand over to JJ Lehto
. Modena retired with transmission problems
which meant that behind the two dominant McLarens, the order was
now Roberto Moreno
, Lehto, Eric van der Poele
in for the little
team and Martini's Minardi.
Moreno's gearbox broke on lap 52 causing him to retire, whilst
Senna was having problems with oil pressure caused by the special
high-torque Honda V12. Berger put in a series of fastest laps to
cut Senna's lead to just 1.7s at the line.Lehto was overjoyed to
gain a podium place for Dallara, with Martini 4th. The Lotus
drivers of Mika Häkkinen
and Bailey took 5th and
Van de Poele's drive ended when a fuel pump broke on the last lap -
he was classified ninth overall.
- Unless otherwise indicated, all race results are taken