Veteran MotoGP rider Valentino Rossi is unsure what to expect from the weather gods and his Yamaha this weekend in France.
The weather forecast is poor in Le Mans for the next few days, with intermittent showers predicted, making tyre choice both difficult and important.
"The weather is very bad, it is very cold and also we expect some rain," the nine-time MotoGP winner told crash.net.
"It will also be an important test under these conditions. We did one day of testing [at Le Mans] before Jerez to understand the surface but the conditions on that day were not fantastic because it was very cold, wet in the morning and dry in the afternoon.
"They make a very good job I think because the asphalt is great and nearly no bumps, so good grip and also the tyre worked well and I think it will be positive for everybody."
— Yamaha MotoGP (@YamahaMotoGP) May 19, 2017
Rossi had a weekend to forget last time out in Jerez, where he limped to a tenth place finish.
While he is still on top of the rider's standings after four rounds, defending champion Marc Marquez made up some ground with a second place with teammate Dani Pedrosa on top of the podium in Spain.
"Unfortunately we lost the small advantage that we had on the two Hondas, but I'm still at the front with the points and this is positive," continued the 38-year-old.
"But for sure we have to work a lot and try to understand because in Jerez we struggled a lot in all the conditions and it looks like the marriage between the tyres and the M1 in all the track was very bad.
"For this reason we don't know what to expect this weekend. Usually here, the M1 was always good, always good races in the last years. But we need to wait and we hope for a good feeling."