Corvette: Year by Year
1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 19671968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982
1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Part IV
Handling was one of the primary goals during the development of the C4. Corvette engineers were obsessed with it. All the usual methods for making the Corvette the best handling car available were tried and a few new ones were developed.
Selecting the right tire is very important if the best handling is desired. Goodyear stepped up to the plate with a special tire designed just for the Corvette. The specifications were tough: reasonably quiet, good in wet weather, safe at a top speed of 145 mph, crisp handling feel and a life span of at least 10,000 miles even with enthusiastic driving. Goodyear used knowledge gained from Formula One racing to meet and even exceed these demands with the VR50 "Gatorback" tires. They were mounted on special 16 inch rims, also a Corvette exclusive. The RPO Z51 equipped cars featured 8.5 inch wide wheels in front and 9.5 inch wheels in the rear. Both the tires and wheels were directional meaning that they were designed to roll in only one direction. Since the front and rear wheels were of different size, a given wheel could only be mounted on one corner of the car. Modular wheels were popular at the time especially on European sourced cars. But they had an aerodynamic disadvantage with their surface close to the brake, so a design that was flush to the body surface was chosen.
One common technique for improving handling is to specify very stiff springs and/or shock absorbers. This was done on the standard Corvette and the optional Performance Handling Package (RPO Z51; $600.20) was equipped with even stiffer springs and German made Bilstein shock absorbers. As is often the case, there can be too much of a good thing and the 1984 Corvette is an excellent example. The Corvette had outstanding handling but a steep price was paid in the form of reduced ride quality. Terms such as "teeth rattling" "bone jarring" and "brain scrambling" were often used by passengers and drivers alike, many of which were not used to performance suspensions.
One of the problems was with the Z51 suspension and the fact that many who ordered it did not know what they were getting in to. Despite its high price nearly half of the 1984 production was Z51 equipped. Although it was a good idea for racetracks (which are typically billiard-table smooth) it had no place in the real world of potholes and speed bumps.
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