In 1981 at the Frankfurt Motor Show Ferrari replaced the 512 BB model with the 512 BBi, the "i" suffix denoting a change from carburettors to fuel injection.The production period ran from 1981 to 1984, when it was replaced by the world market Testarossa model. During that period a total of 1007 examples were produced, in both in right or left hand drive versions, with no USA market versions built.
The 512 BBi featured a few minor changes to the exterior. At the front the plain aluminium egg-crate radiator grille stopped short of the driving lights, which were now exposed in the grille extremities, with small rectangular parking lights mounted in the bumper section above them. At the rear the engine louvre arrangement was modified and a new shroud was provided to the exhaust system, which incorporated hazard warning lights.
A new design of door mirror was fitted, changes were made to the interior, including a black spoked steering wheel, and the availability of "Zegna" wool cloth seat centers as an option. The road wheels became the same width front and rear, fitted with Michelin TRX tyres, which had the effect of increasing the front and rear track to 1508mm and 1572mm respectively.
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In 1991 Ferrari replaced the Testarossa with the 512 TR. In the title 5 represented the number of liters and the 12 for the number of cylinders, whilst the "TR" was an abbreviation of Testarossa (Testa Rossa). The model was produced between 1991 and 1994, when the F512M model replaced it, during which time 2261 examples were produced.
The 512 TR came with subtle exterior changes to improve aerodynamics. The alterations included a one-piece nose with rounded front grille, flush mounted lights and ducts, and a new undertray. At the rear a small kamm tail smoothed airflow.
Internally there were changes to the seats, steering wheel design and trim details. Mechanically there were numerous changes to the engine and gearbox, which boosted power, and provided a more satisfying and positive to use gearbox. Not visually apparent was that the engine and transmission assembly location in the chassis had been dropped by 30mm, to lower the center of gravity, and thus improve the already high standard of roadholding.
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