Nick Heidfeld believes Silverstone could be good for Lotus Renault GP, despite the uncertainty created by the FIA's ban on off-throttle blown diffusers.

Heidfeld heads to the British Grand Prix with 30 points on the board and while he has stood on the podium this season, he has only done so once - and that was back in April at Sepang.

Since then the results have been far less favourable and while it is thought the ban could hit Renault hard, given its unique exhaust, the German is not convinced.

"The question on all our minds is what's going to happen with the change in regulations from Silverstone," he said. "We will wait to see if that changes the pecking order or the gap between the teams, and then go from there.

"Some people think nothing will change, some think that we will see changes but it is all just guesswork.

"A number of people think we will be one of the teams most badly hit (by the changes), but I doubt it."

Pressed on his prospects for the weekend, Heidfeld is actually pretty upbeat about what the team might achieve.

"I think Silverstone will suit our car a lot better [than some of the other races] because at the other high speed circuits this year we have been relatively strong," he continued.

"[Overall] I am looking forward to this weekend a lot," he added. "It is a bit unique obviously this year because there are some changes to the circuit, because I did not drive here last year and also the pit area and everything is new. I have been here many, many times, but I always enjoy coming to Silverstone."

Team-mate Vitaly Petrov meanwhile is also a fan of the 3.67 mile circuit: "Silverstone is an interesting track and it has a new pitlane which we will use for the first time," he chipped in.

"The circuit has good high speed corners, and it's the first GP of the season where we'll have high speed corners like these, so we'll have to see how the tyres will behave.

"I have good memories of Silverstone; I won there in GP2 in 2006 so it always makes it enjoyable to come back to a track where I've done well in the past. The typical British weather also means that rain or sunshine will be pretty unpredictable - but that makes the charm of Silverstone!"