Wheel Rims And Tyres - Ferrari 2012 F12 Berlinetta Owner's Manual

Wheel rims and tyres

Wheel rims
Front
9.5" J x 20" ET 48.4
Explanation of wheel rim codes
Example: 9.5" J x 20" ET 48.4
9.5" = Rim width in inches
J = Shape of rim edge (side projection where tyre bead rests)
20" = Rim diameter in inches
ET 48.4 = Offset (distance, in mm, between the centreline of the rim and inner rim surface)
Rear
11.5" J x 20" ET 71.6
Space saver spare wheel
4.5" J x 20"
General
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