The 25th anniversary of Lamborghini was celebrated in 1988 with the 25th Anniversary Countach. Mechanically very similar to the Countach 5000QV but sported much changed styling. The rear 'air boxes' were restyled and enlarged, while the vents behind them were changed so that they ran front to back instead of side to side. Plus a new air dam and side skirting, both with air intakes, were fitted, and the taillights were restyled to be narrower, with body-colored panels replacing the upper and lower parts of the previous large taillights. The styling changes were unpopular with many, particularly since the intakes had strakes in them that appeared to mimic those on the Ferrari Testarossa, but they improved the engine's cooling, a problem the Countach had always struggled with. It also featured 345/35R15 tires; the widest tires available on a production car at the time. The Anniversary Edition was produced through 1990 when it was replaced by the Lamborghini Diablo.