Michelin's tyre allocation has been expanded for the upcoming German Grand Prix, as the tyre manufacturer has had no opportunity to test at the resurfaced Sachsenring prior to the GP weekend.

Riders will have an extra front and rear tyre available to use throughout the three days, meaning there will be four fronts and four rears on offer, rather than the three fronts and three rears that are in the usual allocation.

The thinking behind the move comes from the fact Michelin has not had the opportunity to test on the resurfaced track, due to noise restrictions that are in place at the Sachsenring - a circuit situated next to residential and commercial zones.

Racing technical director Nicolas Goubert said the company "tried everything" to arrange a test there before the race weekend, as the new surface is bound to offer up a great deal of challenges. Michelin is concerned about the added grip of the surface increasing tyre temperature, he said, rather than excessive wear, as Bridgestone found out - to great cost - at the resurfaced Phillip Island in 2013.

What's more, the temperature range at the East German venue is an extreme variable. Morning temperatures tend to be quite cold for June/July, while there is a normal rise in the afternoon. Then, of course, the threat of rain is never far away.

Add that to the track's unique layout, with riders punishing the left side of both tyres through the ever quickening turns 5-11 before taking the plunge to the right at turn 12 - the infamous 'Waterfall' corner -, and you quickly understands the considerable challenge of designing the tyres with no prior experience of the new surface.

Thus, the French company has had to take "an educated guess" on what specifications to use. All front and rear tyres will feature the asymmetric design, with the left side a harder compound than the right.

The extra slick front tyre in the allocation will be a medium compound, meaning riders have a soft, a hard and two medium fronts to choose from. For the rear, the added tyre will be a hard. Therefore, there will be one soft, one medium and two hard compounds to select.

In both instances, the two medium fronts and two hard rears will have a slight variation in terms of the rigidity of the compound.

Speaking at Assen on Saturday, Goubert explained, "There have been no tests [at the Sachsenring]. We tried everything to have a test. At the end it was not possible because of the noise regulations and so on.

"We agreed with Dorna that we could have one more specification of tyre. One more front and one more rear to cover a wider [range]. So that's a way to cover wider conditions.

"Usually when a track is resurfaced the grip level is higher. So tyre temperature is higher. It does not affect so much the wear. We took that information and built some tyres but it's an educated guess.

"Phillip Island is exactly what I said. They had trouble with tyre temperature. Not with wear. It [the Sachsenring] is very asymmetric. Last year we experienced that. If you remember on Friday morning last year it was terribly cold. So we'll see."

By Neil Morrison

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easy,. hard-hard..

It's all getting too complicated.
There should be a far simpler tyre selection,decide on the compounds in the closed season and just make the same tyres for every race,stop trying to custom build tyres for every single circuit/surface,thankfully Michelin got it right for as Sen and we got a wonderful race,but we have had far too many races dominated/ruined by tyres,fans want to watch ridersvon bikes racing each other on a fair basis,not watch michelins development program.
It's hard enough for even master's like vale to get these bikes set up,what with the ecu's now being such a vital part,the chassis etc etc,how they are meant to achive any consistancency when the tyres vary so widely variable is beyond me.
KISS,4 compounds,+ assymetrics for the circuits that realy need them + wets,the compounds and carcass stay identical from race 1 through to end of season..
Michelin might find it a bit easier and riders would have at least one less variable to work round and us fans might see more

So tyres that have never been tested, resurfaced track that no one has ridden, four different compounds for maximum confusion, and rain showers at the weekend so that no one has time to test the tyres and Michelin has not enough data to know what's going to work or for how long. What could possibly go wrong?

Yearby23:Some weekends we see Yamaha at the front and Honda struggling then vice-versa...but much more exaggerated than in previous years.[\blockquote]
True, with BS it was moderate, with Michelin, specially this year, the difference between bikes are being magnified making it tough for riders/teams but is very exciting & depressing for fans in every alternating weekend.

We're seeing some amazing racing, the championship at this stage has never been closer due in part to tricky tyre selection. Michelin please keep up the good work.

im not sure if is intentional for shake the championship or only are testing a lot of things to have a clear idea of the way they should do best for everyone...

This is becoming a mess.

It's making it exciting for us viewers as every weekend is a total lotterybut it doesn't give the riders any confidence at each track.

Some weekends we see Yamaha at the front and Honda struggling then vice-versa...but much more exaggerated than in previous years.