The '86 Aluminium arms when fitted to my '03 gave a track increase each side.
The '86 steel arms gave the same track increase.
I have a pair of each.
As I posted before (sorry to repeat) the hubs that came with the '86 ali arms are the same as those that came with the '86 steel arms. The discs were the same also.
However,
the hubs that came with the steel arms had longer studs and a
21.5mm spacer between the disc and roadwheel.
I fitted the 944 steel arms to my Bug.
And then I fitted the wheel studs from the hubs off the 951 ali arm into the hubs that came with the steel arms and left off the spacer.
NO INCREASE IN TRACK(over stock at the hub/wheel 'face)
7.5*17et52mm with 225/45ZR17 :silly:
The hubs are the same, I had to swap the studs as I couldn't remove the hub nuts from the ali arms. They're 'bullied' tight rather than secured with a split pin. 'Best undone before arm is removed from the 951. Porschapart take note of this...
Porsche wheel offsets and different track widths can be defined into two catagories, ABS and NON-ABS.
Superman, back me up on this!
To put it simply:-
WE TAKE THE HUGE WHEELS OFF A PORSCHE THAT HAD ABS AND FIT THEM TO THE NON-ABS (Porsche or VW) HUBS/SUSPENSION AND THEY WILL FIT UNDER OUR WINGS (in some* cases)
And remember- BREMBO 4POTS WERE NEVER FITTED (by Porsche) TO ANY STEEL ARMS.
Matt