Yamaha had a disappointing weekend at the Red Bull Ring, and Jack Miller has pinpointed the main issue he faced.

The Austrian Grand Prix was a terrible weekend for Yamaha; all four riders ended the race at the back of the field and scored one point between them.

However, after a terrible weekend, Jack Miller was outspoken about the issues that the Japanese manufacturer ran into during their time at the Red Bull Ring.

The major issue that held Yamaha back was its lack of rear grip from the moment the race began until the end of the 28-lap Grand Prix.

"There‘s not much to say after a very, very difficult weekend for all of us," Miller said.

"It‘s disappointing, to say the least. I felt good for the first five laps – and by ’good‘ I mean the grip was acceptable, but it was the kind of grip we should normally have at the end of a race, not at the beginning. And here, we never had that level at all.

"It‘s quite clear on paper that this weekend our bike simply doesn‘t work with this rear tire and its construction. There‘s just no way to make it work. I tried everything I know – from short-shifting, to being super patient on the throttle – just trying to find a way to defend myself.

"But once you reach around 120 km/h, when the momentum should be enough, we start losing load on the rear, the bike spins like crazy in a straight line, and there‘s nothing you can do about it.

"The front end of the YZR-M1 is phenomenal, but the rear is the limitation. We need to work hard to understand how to improve it."

Miller ended up finishing the Austrian Grand Prix in 18th place, which was his first race weekend without a point since the Italian Grand Prix.

The Australian is 17th in the MotoGP World Championship, one point behind Ai Ogura in 16th and ten points ahead of Joan Mir in 18th.