Alfa Pages
A forum for help with the Alfasud And Alfa 33

Wheel Offsets

Thanks to Peter from Denmark here is the often requested list of off-set for Alfa-wheels and if you can use wheels from other models on your Alfa 33.

Here you can see a table with the original off-set sizes:

Giulia (4-d) 42 mm
Bertone (63-76) 38 mm
Spider (66-93) 38 mm
AR Berlina 38 mm
Montreal 25 mm
Alfasud Serie 1 45 mm
Alfasud Super 45 mm
Alfasud ti Ser2 39 mm
Alfasud Serie 3 39 mm
Sprint (Sud) 39 mm
Alfetta, all 45 mm
Giulietta, all 45 mm
Alfa 33, all 39 mm
Alfa 75 1.6-2.0 45 mm
Alfa 75 2.5 40 mm
Alfa 75 TS/Turb 30 mm
Alfa 75 3.0 30 mm
Alfa 90 2.0 45 mm
Alfa 90 2.5 40 mm
Alfa 145/146 1.4/1.6/1.7 16V 43 mm
Alfa 145/146 T. Spark/Q/ti 50 mm
Alfa 155, Serie 1 (first model) 50 mm
Alfa 155, Serie 2 (wide aches) 41 mm
Alfa 156 41 mm
Alfa 164 TS/V6 40 mm
Alfa 164 24V 32 mm
Alfa 166 41 mm
Alfetta GT/GTV 45 mm
GTV 2.0 45 mm
GTV6 2.5 40 mm
Spider T.S./V6 35 mm
Spider V6 24V 31 mm
GTV T. Spark 35 mm
GTV V6 24V 31 mm
But then there is the additional thing about bolt circle.
Old Alfas have 4x108 mm.
Alfasud/33/75/90/145/146 have 4x98 mm
Big engine (TS, Turbo, V6) 75/90 have 5x98 mm
147/156 have 5x98 mm
166 has 5x108 mm

The center hole has a diameter of 58,6 mm, but from the starting of the Fiat aera (1987) this size changed on new models to 58,1 mm.
If you find a new wheel which fits on a new Alfa, and you would like to use it on your Alfa 33, then you have to enlarge the center hole by 0,5 mm.