F1 drivers raise concerns over 'bumpy' Miami track

Lando Norris and Sergio Perez have criticised the track at the first Miami Grand Prix after several drivers struggled with the surface in the opening practice sessions.

McLaren's Norris took P6 after Friday's second session but was far from happy with race conditions."It is extremely tricky. It is very bumpy in some areas which is not quite what we were expecting," Norris said.

"I think everyone was expecting it to be very smooth and beautiful but it's not," he added.

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Alfa Romeo's Valtteri Bottas spun backwards into the tyre barrier at turn seven, damaging his car's rear wing in the first practice session while Ferrari's Carlo Sainz crashed into Turn 14.

A premature end to Carlos Sainz's FP2 session ??#MiamiGP #F1 pic.twitter.com/Daz29vaFD1

"The surface is very tricky as well because you go off line anywhere and it is pretty much game over and you end up in the wall, so it punishing let's say," Norris said.

"That is why you have seen quite a few people ending up in the barriers. I feel like it isn't going to be great for racing now.

"That is the negatives but the positives are it is still a good track," he added.

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Red Bull's Sergio Perez agreed with Norris's concerns.

"I am really disappointed there is no grip off-line. It’s a shame because I think the racing will be bad due to that. As soon as you try to go off-line, there is no grip," the Mexican said.

Decent overtaking attempt, but just slightly late on the brakes from @SChecoPerez ??#MiamiGP #F1 pic.twitter.com/gJIBQmcJEM

"It’s wet on that side. It feels very gravelly. Racing will be hard. I think it’s going to be