The 2011 F1 rules changes at-a-glance

By Zaki JufriEvents - 20 September 2011 10:01 AM | Updated 10:11 AM

The 2011 F1 rules changes at-a-glance

Re-Introduction Of Kers

Otherwise known as the Kinetic Energy Recovery System (KERS), the teams agreed to ban it last year after it made its debut in 2009. KERS stores energy from the cars’ braking system, which can be utilised to boost speed. Via the push of another button a car is given a 80hp boost for a maximum of 6.6 seconds per lap. Can be used in one go or in spurts. As a result, the minimum weight of the car has been increased by 20kg to 640kg.

Adjustable Rear Wing

Designed to aid overtaking, via the press of a button, a driver can now open a slot gap in the rear wing that reduces drag, increasing speed by up to 10-12mph by the end of a straight.

Return of Pirelli

Pirelli tyres for F1

Pirelli's six Formula One tyre types for 2011 - (L to R) wet, intermediate, super soft, soft, medium, hard

Pirelli is the sole supplier for 2011 and tyre allocation has been reduced to 11 instead of 14 sets of dry weather per driver per race weekend. This will significantly impact the race as Pirelli tyres are designer to degrade more quickly, meaning many will be forced to make potentially three pit stops per race rather the one as was the case last year.

Bans On Double Diffusers And F-Ducts

The double diffuser, holes in the underfloor of the car which use exhaust gases re-routed over the diffuser to increase downforce are gone, although single blown diffusers are still allowed. So too are F-Ducts. Developed by McLaren and copied by other teams, the system relies on drivers blocking a gap in the cockpit and that was judged unsafe.


A gearbox must now last five consecutive races this year. However, teams are permitted to make one change per car without incurring a five-place grid penalty should that change occur out of sequence.

107% Rule

Any driver who fails to set a time within 107% of the fastest lap in Q1 will not be permitted to take part in the race; for instance, if the fastest lap is 1 minute 40 seconds, a driver must set a time faster than 1 minute 47 seconds in order to make it to the grid.

More Power To Stewards

The race stewards have been granted more powers which mean they can impose a range of penalties that now includes disqualification from a grand prix and even suspension for a subsequent race. 

Source: Formula 1