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LIVE: F1 Dutch GP updates - qualifying coming up after Russell won sprint race

Formula 1
Dutch GP
LIVE: F1 Dutch GP updates - qualifying coming up after Russell won sprint race

Why Williams problems are worse than previously known

Feature
Formula 1
Dutch GP
Why Williams problems are worse than previously known

BTCC Donington Park: Ingram leads practice from Doble

BTCC
Donington Park (Grand Prix Circuit)
BTCC Donington Park: Ingram leads practice from Doble

F1 Dutch GP: Russell controls sprint race as Leclerc overhauls Norris for second

Formula 1
Dutch GP
F1 Dutch GP: Russell controls sprint race as Leclerc overhauls Norris for second

Supercars Ipswich: Kostecki and Brown take a win each in hectic first day

Supercars
Ipswich Super 440
Supercars Ipswich: Kostecki and Brown take a win each in hectic first day

Why Honda's new F1 engine comes with fresh but expected driveability issues

Formula 1
Dutch GP
Why Honda's new F1 engine comes with fresh but expected driveability issues

The advice Marquez gave Hadjar over his wrist injury

Formula 1
Dutch GP
The advice Marquez gave Hadjar over his wrist injury

LIVE: F1 Dutch GP updates - Russell wins sprint race from Leclerc

Formula 1
Dutch GP
LIVE: F1 Dutch GP updates - Russell wins sprint race from Leclerc

De la Rosa happy with 2010 tyres

Formula One tyre supplier Bridgestone has made a step forward in producing tyres that can operate without the need for pre-warming, claims McLaren test driver Pedro de la Rosa

With the use of tyre warmers set to be banned from the start of next season, Bridgestone has begun evaluating new rubber that will better be able to cope with the situation.

An earlier plan to ban tyre warmers for 2009 was delayed because of safety fears expressed by teams about the behaviour of the rubber when it was cold.

But the latest batch of tyres tried out at Jerez in Spain this week are much improved compared to those tried out last year says de la Rosa.

"It wasn't that bad," explained the Spaniard. "Bridgestone has brought new compounds which are designed to work at lower temperatures, so it wasn't so hard to bring them heat them up.

"After a long run they were very worn out, but this is normal. We were trying to complete the biggest number of laps per set."

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