Regulations overview (2004) - The
Championship is open to two classes of cars - BTC Touring and 'Super
2000'. All cars race in one class with weight ballast to bridge any
performance gap. BTC-T is for cars introduced under the BTCC 2001 rule
changes with Super 2000 cars meeting the specifications of the current
European Touring Car Chgampionship rules. Basic rules require cars
to have two-litre engines and use a mass-production bodyshell. Certain
specific
components
such
as
the gearbox, brakes,
clutch, engine management, wheels, fuel system and data logging - are
common to all cars and can only be purchased from one
supplier.
The car must weigh a minimum of 1150kg, and feature no ‘exotic’
materials, carbon-fibre for example, except for safety applications.
The weight of the car can vary as the official handicap, or 'success
ballast' is added or subtracted to a maximum of plus 42kgs or minus
24kgs.
The cars all run on 17-inch wheels, with tyres from Dunlop, the official
tyre supplier to the 2003 championship. A Touring Class car can use
a maximum of 20 slick tyres per race meeting - including any free practice
sessions. There is no limit to the number of wet tyres that can be used.
The regulations state that the car’s lights must be on when grooved
tyres are fitted.
Engines are sealed by championship officials, and four are allowed
per driver for the season. Engine changes after that figure incur a
loss of Manufacturers’ and Teams’ championship points, specifically
five for the fifth and sixth engine changes, ten points for the seventh,
and 15 for each subsequent change.
MSA
British Touring Car Championship 2005