Covini C6W – is an Italian 2-seat, 2-door sports coupé with a removable roof section. Inspiration for the car was taken from the 1976 Tyrrell P34, which had two pairs of smaller front wheels, a principle applied to the C6W.
The project was started in 1974 but abandoned shortly after, and left dormant into the 1980s due to the lack of availability of low-profile tires at the time. In 2003 the project was revived and in 2004 the C6W was shown in prototype form. In 2005 a slightly revised version debuted at the Salon International de l’Auto, featuring new wheels, new roof structure and a refreshed interior, and went into limited production of 6-8 cars per year, as a result of a tie-up between PMI and Covini Engineering. The car features a rear, 4200 cc 8-cylinder engine and has a top speed of 186 mph (299 km/h). The C6W was built with safety, increased braking, and directional stability in mind.
Because there are four front tires, there is less chance of loss of control due to one front tire deflating as well as less risk of aquaplaning due to the front axle set clearing the road for the following axle set. In addition, having six wheels instead of four produces better braking due to 100% more contact patch and braking components on front axles and better grip. The manufacturer claims the design produces less understeer than conventional designs, and suspension produces less turbulence from potholes and bumps in the road because of the increased surface area. It is hypothesised the increased grip of each tire may mean that the car can achieve greater cornering speeds.
However, having more wheels means more tires, brake pads, rotors, wearable front suspension components to maintain, plus more time intensive front tire rotation procedure (dismount and remount four directional tires on opposite side, drive tires are not able to be rotated to front due to size difference).
Although the car is very light overall, at less than 1,200 kg (2,646 lb), the added weight of additional wheels and steering effort result in less steering feedback to driver than a car of comparable performance using conventional design.
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