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Well, we knew the weather was going to be a factor at the Sachsenring, and we weren’t disappointed. (Or perhaps we were, depending on your point of view.)

The MotoGP riders started off on a bone dry track in the morning, spent an extended 55 minutes on slick tires, then suffered through a couple of full on rain showers in the afternoon. They had time on a dry track, and time on a wet track, and time on a track with a dry line forming.

It was the perfect preparation for what promises to be a weekend of mixed weather. The chances of making it all the way to the race on Sunday without another wet session are very small. But they are also not zero.

Riding in both weather conditions gave the riders a chance to assess the grip of the new surface. The response was overwhelmingly positive. Aleix Espargaro summed up the general impressions, and entirely in character, he also summed it up with the most enthusiasm.

“It’s unbelievable,” the Aprilia rider said. “They did a super job, a fantastic job. The tarmac has zero bumps, nowhere. The grip is super high. Actually, I think we finished five seconds from the dry times, which is very very very fast. So, German style, they did a great job!”

The grip was generally judged to be good in the dry, but absolutely phenomenal in the wet. “Honestly, in the wet you can’t believe it,” Cal Crutchlow told us.

“I left the pit lane. I was late because we were messing around in the garage. Marc had done three laps. I saw the blue flags, sit up and I looked down and Marc’s got his elbow on the floor! When I see someone’s got their elbow on the floor it means you’ve got to push.”

From Assen to Sachsenring, 700 kilometers in 7 days. One of the shorter hauls between back-to-back races, but a tight schedule nonetheless.

Sachsenring’s weird split paddock was full of tired looking faces on Thursday, as truck drivers and hospitality staff rushed to tear the entire paddock down in Drenthe, then build it all up again in Saxony.

It is hard to think of a greater contrast in circuits, too. Assen is flat, fast, and sweeping, the Sachsenring tight, slow, and with massive changes in elevation. There are similarities too: the bikes spend a lot of time on the edge of the tire at both tracks.

At Assen, it’s especially the right side of the tire, as riders sweep through the succession of right-handers from Mandeveen all the way to the Ramshoek.

At the Sachsenring, it’s all left-hand side of the tire which takes the punishment, as the bikes come out of the Omegakurve, pitch into Turn 4, then hustle their way all the way down and then up and over the hill before Turn 11.

Turn 11 is a vicious beast, laying in wait for the unwary, its voracious gravel trap waiting to claim anyone who flicks the bike just a little too enthusiastically right after spending so much time on the left-hand side of the tire.

The opposite right-hand side has had 40 seconds to cool off, while the right-hand side of the tire takes all the punishment. The transition from left to right, from scorching hot to cool rubber, from one of the hardest tire compounds of the year to one of the softest, is tricky.

Switching between two very different feeling rubbers catches plenty of riders out, in both MotoGP and Moto2.

Just how clever has Honda been with its fairings? At Assen, Cal Crutchlow spent Friday going back and forth between bikes with and without the addition of aerodynamic side pods on the outside of the fairing.

That led to some confusion among the media. Had Honda homologated the aerodynamic fairing already? Or was this something new?

I went to see Danny Aldridge to ask what the situation was, and the MotoGP technical director explained the situation.

For the first ten years I spent writing previews for the Dutch TT at Assen, I would start have to start of on a tangent, with a brief summary of the schisms and splits of the Dutch Reformed Church.

Without the background to the religious topology of The Netherlands, it is hard to explain why the race was held on Saturday. Last year, when the MotoGP race was held on a Sunday for the first time, I had to recap that, to explain why it was a big deal for the race to be held on Sunday, and to be moved from Saturday.

This year, 2017, I can leave aside the history of Dutch Protestantism and its aversion to any activity on the Sabbath. This will be the second time the race will be held on Sunday, and so the novelty of the change has worn off.

It has fallen in line with the rest of the calendar, and so it is just another race weekend, same as any other. Although of course, being Assen, it is still something a bit special.

If anything, the switch from having a Saturday race to a Sunday race has been a positive boon. Though some feared the traditionalists would stay away, offended by change, visitor numbers were up last year, especially on Friday and Saturday.

More people came for the race as well, despite taking place in an absolute downpour. Over 105,000 fans packed a flooded Assen, because being Assen, it is still something a bit special.

Are Michelin deciding the 2017 MotoGP championship? That would be an easy conclusion to draw after the war of attrition which the Gran Premi de Catalunya at Barcelona turned into. It would also be inaccurate.

This race, like the race at Jerez, was about managing tires in poor grip conditions, with the added complication in Barcelona of extremely high tire wear. The riders and bikes which managed that best ended up at the top of the results sheet. The bikes and riders which struggled with that went backwards, and lost out.

And yet Michelin undeniably has a role in all this. After the race, Honda boss Livio Suppo pointed out that we were seeing different manufacturers do well at each different race.

The pendulum swings between one and another, as a particular team or a particular factory hits the performance sweet spot for the tires, and gets the most out of them. At the next race, it’s a different rider, a different bike, a different team.

The criticism Suppo had was that the sweet spot for the tires could be hard to find. “The tires seem to have a very narrow operating window. If you get it right, you can be competitive,” he told me.

If you didn’t get it right, if you couldn’t find that operating window, you are in deep trouble. “Maybe it would be better if that window was bigger.”

That may be true. When Bridgestone were official tire supplier to MotoGP, their tires had a much wider operating window. But that tended to reward the teams with the biggest budgets to spend the most time analyzing data, finding the perfect setup, and the riders who could ride with inch-perfect precision for 25 laps.

That left little room for improvisation, for adapting to circumstances, for the element of surprise. Whether you prefer the Bridgestone way, rewarding relentless precision, or the Michelin way, rewarding the ability to adapt quickly, is probably a factor of where you as a fan fall on the Motorcycle Racing Purist Scale.

However you feel about it, though, the racing in the Michelin era is undeniably more entertaining.

Sunday at Barcelona is going to be a war of attrition. Everything is conspiring against the riders, and most especially the tires.

Temperatures are expected to rise even higher than they were on Saturday, when air temperatures hit over 32°C, and track temperatures climbed to 55°C and above.

Those are punishing temperatures in which to race a MotoGP bike, especially at Montmelo, where the heat gets trapped in the bowl of hills which holds the circuit.

Then there’s the tires. There is much complaining about the lack of grip and the fact that grip drops off a cliff after seven or eight laps.

It would be more accurate to blame that on the track, though: the Circuit de Barcelona-Catalunya has not been resurfaced in twelve or thirteen years, and is very heavily used, both by bikes and by cars.

That has created a surface which is both too smooth to provide grip, while simultaneously being incredibly abrasive.

That sounds contradictory, so when Michelin boss Nicolas Goubert spoke to a group of journalists on Friday night, I asked him to explain. The Frenchman explained that grip and abrasiveness came from two different parts of the surface.

Asphalt (or rather, a road or racing surface) consists two parts: binder and aggregate. Aggregate is basically small stones, specially selected for size and shape. Binder is usually a special formulation of bitumen, often containing other ingredients.