Williams will have a new rear wing and diffuser at Spa Francorchamps

Williams will have a new rear wing and diffuser at Spa Francorchamps © Sutton Images

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Williams will have yet another tweak to the rear wing and diffuser of its car for the Belgian Grand Prix as it attempts to unlock performance from the FW33.

The rear of the Williams has been constantly evolving this season as the team has brought updates and improvements to try and turn the car into a regular points scorer. The team ditched its original diffuser at the Spanish Grand Prix earlier this year but has struggled to find the overall performance to consistently put the car in the top ten despite further updates.

Technical director Sam Michael said the team would test some improvements when it arrives at Spa Francorchamps this weekend.

"We will bring new rear wings which feature a different drag level and some diffuser modifications to evaluate during practice," he said.

Rubens Barrichello added: "We are going to have a new aero package for this race that I hope will give us a better chance to fight for points."

But Michael believes the weather could be one of the biggest contributing factors towards the team's results at Spa Francorchamps.

"Spa is one of the greatest circuits in the Formula One Championship," he added. "Large variations in terrain provide a challenge to the engineers to cover all of the different corner types, from slow speed curb riding to the flat out Eau Rouge. Race day can be really interesting when the weather changes as it can rain on one side of the circuit and be dry on the other!"

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