Blame it on the Bass Strait. The weather, or perhaps more accurately, the weather, the climate, and the environment, has a huge effect on the Phillip Island circuit.
The weather, because the strong winds which blow in off the Strait brings regular dowsings of rain. The climate, because the hot summers, cool winters and wet weather places a severe strain on the asphalt. And the environment, because the sea breeze brings in salt, and the Antarctic ozone hole means UV levels are high, both of which have a corrosive effect on the circuit surface.
Perched on top of cliffs overlooking the Bass Strait is a stunning setting for a race track, but the Phillip Island circuit pays a heavy price for the privilege.
All of those factors have combined this year to throw the Australian round of MotoGP a curveball, or to make it more colloquially accurate, bowled MotoGP a googly.
The weather at Phillip Island was at its most deceptive, relatively warm and sunny, but with clouds bearing quick showers blowing in at regular intervals.
No class would escape the tricky conditions, though some were more badly affected than others, Moto3 losing the first half of FP2 to the wet.
Is the strain of the championship starting to take its toll on the relationship between the two Movistar Yamaha riders? It was all Valentino Rossi and Jorge Lorenzo could do to roll their eyes when they were asked this question during the press conference.
They get asked it a lot: in just about every press conference at which they are together, in their media debriefs after every day of practice, and presumably, in just about every TV and media interview.
Valentino Rossi had armed himself with a quip to deflect the question. “We are very happy about your interest,” he joked. “We have a diary about our relationship, which we will keep secret until the last race.”
It is a shame he was only joking. There is no doubt that a diary, especially a video diary, following Rossi and Lorenzo behind the scenes through this season would have made compelling reading or viewing.
Phillip Island, like Mugello, is one of the tracks which any motorcycle racer worth their salt puts at the very top of their list of favorite tracks. And rightly so: swooping over gently undulating ground sitting atop cliffs overlooking a bay on the Bass Strait, it is perhaps the greatest of the natural race tracks.
It has everything a race track should have: a collection of fast, sweeping corners which richly reward bravery; a couple of hard braking corners fast and slow at which to overtake; a superb and treacherous combination of turns in Lukey Heights and MG at which to make a last ditch passing attempt, and a long enough run to the finish line to make drafting a possibility.
Add in arguably the most breathtaking setting on the calendar, and you have just about everything.
Bridgestone have added two new tires to their 2015 allocation, in response to developments in 2014. A new extra-hard rear will be made available at a few of the more abrasive circuits on the calendar, while the asymmetric front, debuted at Phillip Island last year, will also be available at more tracks.
Two new tires means two new color codings, to distinguish them from the existing allocation of tires. The extra hard rear will carry a yellow stripe around the side, while the asymmetric front will be indentifiable by a light blue band on the sidewall.
The existing color codings for the remainder of the tires remain unchanged, as shown in the tire chart and table below.
Convinced they had cracked the code of the cork screw, Bridgestone arrived at the US GP with a single compound tire. Relying on data from last year’s GP, the tire manufacturer was only expecting a marginal variance in tire temperature between the left and right sides of their racing slicks. As such, they did not develop an asymetrical tire compound like they did for the Catalan GP.
As we now well know from the high-sides of Casey Stoner and Jorge Lorenzo, as well as the plethora of riders that ended up in the gravel that week, this single-compound design wasn’t up to the task of handling the track that many riders described as “one big turn”.