Goodyear P205/70R-13 white-letter tires. In 1981, the 13-inch wheels were replaced with 14-inch wheels with Goodyear Eagle GT P215/60 R14 radial tires. To upgrade handling, for 1982, the steering rack was relocated from the firewall to the subframe holding the engine and front suspension. The design change was intended to prevent subframe movement from affecting steering behavior. For 1980, the X-11 offered only handling upgrades over a Citation, with the powertrain consisting of a 90 hp 2.5L inline-4 and a 115 hp 2.8L V6. Alongside the standard Citation, the X-11 was available with either a 4-speed overdrive manual transmission or a 3-speed automatic transmission (the only transmission available for 1985). To aid acceleration, axle ratios of the X-11 were changed, alongside the transmission gearing. A taller first gear was intended to allow the X-11 to accelerate to 60 mph without shifting to third gear. For 1981, the X-11 was powered exclusively by a "high-output" version of the 2.8L V6; a higher-performance dual-tip exhaust system raised output to 135 hp/165 lb-ft of torque. As before, the X-11 maintained separate final-drive ratios. In 1982, emissions regulations required a decrease in torque output, to 145 lb-ft (horsepower remained unchanged). This output remained the same through 1984. In 1985, the carbureted engine was replaced by a fuel-injected version of the 2.8L V6 with output decreased to 130 hp/155 lb-ft of torque. In slightly different tuning, the Citation X-11 shared its powertrain with the Chevrolet Celebrity Eurosport, Pontiac 6000STE, and Pontiac Fiero. Body upgrades In 1980, the Citation X-11 shared most of its powertrain with the standard Citation, with the model being mostly a chassis and visual upgrade. Alongside the alloy wheels and tires, the X-11 featured a trunklid spoiler, sport mirrors, body skirting, and side striping. In 1981, to better distinguish the model from standard two-tone Citations, the side striping of the X-11 was replaced in favor of large "X-11" door graphic, which remained in use for the rest of its production. The model is best distinguished from a standard Citation by its use of a black grille (the only exterior chrome trim on a Citation II X-11 is the Chevrolet grille bowtie and trunklid badging). In 1981, a functional cowl-induction hood scoop was added. Under hard acceleration, a solenoid operated switch opened a flap that let in extra air. While produced without the front bench seat seen in the launch of the Citation,