speed of , although the manufacturer claims the car is engineered to attain speeds up to . Carbon fiber is used on the roof, hood, fenders, front splitter, and rocker moldings; the hood and fenders are painted over, while the roof and splitter are merely covered in a clear-coat, retaining their original black color. A polycarbonate window is placed in the center of the hood, allowing the engine intercooler to be seen from the exterior. The wheels were the largest ever placed on a production Corvette, with both front and rear wheels increasing in size and diameter over the Z06. Carbon-ceramic brakes are included. The brake calipers are painted blue, as are the engine intercooler trim and the ZR1 logo. Magnetic Selective Ride Control was also included on the car, with sensors to automatically adjust stiffness levels based on road conditions and vehicle movement. Grand Sport The 2010 Grand Sport was unveiled at the 12th annual C5/C6 Corvette Birthday Bash, held at the National Corvette Museum. The Grand Sport replaces the previous Z51 option. The GS or Grand Sport was equipped with the following enhancements: Specific manual transmission with different gear ratios Larger/stiffer anti-sway bars Stiffer springs Revised shocks Larger Z06 rear spoiler Transmission cooler Functional front and rear brake ducts for added brake system cooling Unique light weight forged aluminum 18-inch front and 19-inch rear wheels (painted finish standard and chromed finish optional) Z06 brakes, including cross-drilled front rotors and rear rotors Specific rear axle ratio on automatic transmission equipped models Optional 1LT, 2LT, 3LT and 4LT trim packages. Wider front and rear fenders with integrated Grand Sport badges Wider 275/35ZR18 tires in the front Wider 325/30ZR19 tires in the rear 6-piston front calipers and 4-piston rear calipers Dry-sump oil system (manual transmission coupes only) Hand-built LS3 6.2 L V8 (manual transmission coupes only) launch control (manual only) Engines The LS2 was replaced by LS3 from model years 2008–2013. The LS3 engine in the GS convertible or Grand Sport coupé equipped with an automatic transmission has wet sump instead of dry sump lubrication. Limited editions Ron Fellows ALMS GT1 Championship Edition (2007) The Ron Fellows ALMS GT1 Championship Edition is a special edition of the Corvette Z06 developed to commemorate the victory of the Corvette racing team driver Ron Fellows at the 2007 ALMS GT1 championship. Notable exterior features include special Arctic White paint, red grand sport style stripes