Progress !
I took some measurements last week of Alex's pan with the early alu arms and I can CONFIRM that the width increase per side is the SAME as the alu arms with the 944 backing plate method on stock beetle arms. The advantage of the alu arms is weight savings.
I just fitted my rear 18x10 (47mm offset) with 265/35 PZero. You need a 10mm spacer to clear the upper bump stop and get the wheel off of one of the spring plate bolts. The wheel fits very nice.
I haven't got the 930 rotor yet so I am using a boxster rear rotor (299x24mm) that I borrowed from Alex. Unfortunately I didn't bring the digital camera home from work.
With this setup, If a 2.25" wider rear fender existed, it would fit over these rear wheels...but the clearance will be very close. With a 2.5" wider fender (if it existed) , the fender would clear the wheel enough for some lowering...but it will be close. With a 3" wider fender, you could fit an 11" wide wheel...I have measured it and it WILL fit, even with lowering.
Sandeep
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