Collard leads opening BTCC practice

Rob Collard topped the first British Touring Car session of 2012 with his turbocharged WSR BMW at Brands Hatch on Saturday morning. Rob Austin's rear-wheel-drive NGTC Audi A4 set the pace in the early part of the session before the BMW, now running a Neil Brown-prepared turbo unit for the first time, set a time of 48.932s.

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