Global InformationToro Rosso STR4 information
 | This article needs additional citations for verification. (June 2023) |
 Sébastien Bourdais driving the STR4 at the 2009 Spanish Grand Prix | |||||||||||
| Category | Formula One | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Constructor | Toro Rosso | ||||||||||
| Designer(s) | Adrian Newey (Chief Technical Officer) Geoff Willis (Technical Director) Rob Marshall (Chief Designer) Peter Prodromou (Head of Aerodynamics) | ||||||||||
| Predecessor | Toro Rosso STR3 | ||||||||||
| Successor | Toro Rosso STR5 | ||||||||||
| Technical specifications | |||||||||||
| Chassis | carbon-fibre and honeycomb composite structure | ||||||||||
| Suspension (front) | cast titanium uprights, pushrods, carbon-fibre upper and lower wishbones | ||||||||||
| Suspension (rear) | cast titanium uprights, pullrods, carbon-fibre upper and lower wishbones | ||||||||||
| Engine | Ferrari 056 (2008-spec) 2398cc V8 18,000 RPM Limited | ||||||||||
| Transmission | 7-speed sequential | ||||||||||
| Fuel | Shell | ||||||||||
| Tyres | Bridgestone | ||||||||||
| Competition history | |||||||||||
| Notable entrants | Scuderia Toro Rosso | ||||||||||
| Notable drivers | 11.  Sébastien Bourdais11.  Jaime Alguersuari12.  Sébastien Buemi | ||||||||||
| Debut | 2009 Australian Grand Prix | ||||||||||
| Last event | 2009 Abu Dhabi Grand Prix | ||||||||||
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The Toro Rosso STR4 was a Formula One car which Scuderia Toro Rosso used in the 2009 Formula One season. The car was revealed to be a Red Bull RB5 with a 2008-spec Ferrari 056 engine in Barcelona on March 9, 2009. It was revealed before the testing session.[1]
The Toro Rosso STR4 was the last-ever Toro Rosso car to be built by its senior sister team Red Bull Racing, as from the 2010 season onwards Toro Rosso switched to in-house designed cars until the Scuderia AlphaTauri era.
- ^ "Toro Rosso face uphill struggle, claims team principal". The Guardian. 9 March 2009. Retrieved 4 June 2023.