was likely to lead to very expensive failures of the transfer gearbox. Dimensions Length: 4492 mm Width (without mirrors): 1688 mm Height (empty): 1320 mm Wheelbase: 2600 mm Track front/rear: 1426/1446 mm Tyres: 175/70 R 14 or 195/60 R 14 85 V, 195/60 R 15 or 205/55 R 15 and 205/50 R 16 87 W Turning circle: 11,44 m Safety and Sustainability The car got some recycled and recyclable plastics (like headlight frames, water deflector, bumper attachments, inlet manifold, sound insulation) and catalytic converter already at the beginning of the production. Since the beginning of 1993 all Calibras were delivered with a driver's airbag as standard, and co-driver's full size airbag was added in August. Amongst other small changes during the ongoing development program, other important safety features were added in August 1993: double steel tube strengthening bars in the doors as side crash protection, strengthened door sills, strengthened pillars and roof frame, and seat belt pre-tensioners also became standard for front passengers. Waterbased paint and CFC-free air-conditioning were also reasonable steps taken for sustainability. Motorsport Deutsche Tourenwagen Meisterschaft/FIA International Touring Car Championship The DTM/ITC-specification race cars used an all-wheel-drive layout, with the engine mounted longitudinally instead of transversely. Early DTM cars used a naturally-aspirated Cosworth-developed 54-degree V6 engine based on General Motors' iron block/aluminium head C25XE. Power output improved from from 1993 to 1995. Due to changes in the Group A Class 1 FIA regulations for 1996, a switch was made to an all-aluminium, 75-degree V6 based on the Isuzu 6VD1 (as used in the Trooper/Amigo). Using this engine, Opel won the 1996 ITC Championship. The Isuzu-based KF V6 was capable of revving to 15,000 rpm. The last known KF V6-powered Calibra race car in existence is the Zakspeed Calibra Concept 2 prototype. The car was built to be used as a test mule for the cancelled 1997 FIA ITC championship. South African Wesbank Modifieds series Wanting a car that would be competitive in the Wesbank Modifieds Series (at the time, South Africa's premier circuit-racing series), South Africa's Delta Motor Corporation commissioned a one-off Calibra race car. Owen Ashley Auto Developments, based in Cape Town, was contracted to design and build the car in late 1990, with financial backing from DMC. The car was designed around the then-current Class A rule set (broadly similar to that used in the American IMSA GT series). The car was based around an