As with all Formula 1 cars, the F300 was heavily and consistently revised during the 1998 season. At the Argentine Grand Prix, a wider front tyre from Goodyear was introduced which significantly improved the handling of the car. "X-wings" were introduced at the San Marino Grand Prix, but were later banned before the Spanish Grand Prix due to safety reasons. A longer wheelbase version of the car was introduced for the German and Belgian Grands Prix, and a new spec engine was also designed for the title-deciding Japanese Grand Prix. The most significant upgrade to the car was introduced at the Canadian Grand Prix, where it received a new diffuser, new rear body panels, a new delta-shaped front wing, and top-exiting exhausts. This overhaul coincided with a hat trick of wins for Schumacher. The latter of which improved cooling and aerodynamics of the car which was so effective that many other teams copied the design.