240/55VR415 Michelin TRX
Michelin's 240/55VR415 TRX is the tyre that helped the Ferrari 400 GTi be the exceptional car that it is. The extraordinary levels of comfort and grip Michelin were able to get from such low profile tyres is still exceptional today because of the revolutionary tyre and wheel rim combination. The lower level flange on the edge of the rim lead to a less complicated flex in the tires side wall, which meant that greater levels of comfort can be gained from the TRX's lower side walls which in turn meant the TRX could give more responsive handling.
The 240/55VR415 Michelin TRX tire was also fitted to the 512 BBi and the Ferrari 412 GTi.