Suzuki MotoGP bike 'impossible' to ride in wet conditions

Vinales was a practice pacesetter in the dry at the Sachsenring, but finished the wet-dry German Grand Prix a distant 12th, 41 seconds behind winner Marc Marquez.

It followed similar struggles and a ninth place finish as rain hit Assen for the Dutch TT last month, the first real wet running during the championship this year.

"It makes it impossible to go fast," he said, describing the difficulties in the wet as "incredible".

"When I was behind Jack [Miller] or behind even Jorge [Lorenzo], they go [away] a lot when we accelerate.

"So we have a real problem there and they need to resolve it.

"If we have another wet race, I see myself again in 12th or 13th like this because I cannot go faster."

Vinales was determined to get on top of the problem in Germany when he realised the race running would be wet, but did not know whether the cause was the chassis or electronics.

"[In Sunday's warm-up] the bike had too much power and was spinning," he said.

"Then in the race it was without power and it was the same problem.

"They need to worry because they need to resolve it, I cannot resolve it, just try to ride the bike as fast as I can."

Team-mate Aleix Espargaro finished 14th in Germany, a further 24s behind Vinales, extending a tough run of scoring just two points and dropping from sixth to 11th in the championship in the last three events.

The Spaniard believes electronics are the biggest contributor to the wet-weather woes.

"We have to work still in a lot of parts of the bike," he said.

"The bike improved a lot and for me now the weakness, the worst part of the bike, is the electronics."