MotoGP bosses have finally bowed to pressure from riders and changed the tyre allocation rules for the remainder of the 2011 season, starting with this weekend's Brno meeting.

After consultation with the almost the whole MotoGP grid, the Grand Prix Commission met yesterday and agreed the new rules in an attempt to stop the plethora of broken bones and other injuries and reduce the huge number of front-end crashes caused by riders being unable to get Bridgestone's finest up to temperature on cold tarmac as at the Sachsenring.

The new regulations state that each rider is now allowed 19 slick tyres over the three days, nine front and ten rears, with three compound options for the former and two for the latter.

In terms of rear tyres, riders can now choose half and half soft/hard or 60/40 either way after the second free practice session but it is still down to Bridgestone to decide which compounds to turn up with. This weekend, they have brought asymmetric soft and medium (which the FIM will designate as the hard option).

Up the front, the choice of three compounds (hard, medium, soft) may be restricted to two if track or whether conditions deem the third not necessary. These 'Special Case' races will be designated by the organisers and Bridgestone. For this year those are Phillip Island, Sepang and Valencia.

Rules over the numbers of wets remain the same, however, Bridegstone may allocate one extra set (one front and one rear) of wet tyres to every rider after qualifying, for use as race back-up. In the case that all four practice sessions (excluding warm-up) are declared wet by the Race Director, one more set of wet tyres will be allocated to every rider in addition to the race backup extra set.