If you are running the arm below the ball joint (how I have mine too) you need to reverse the nuts, the nuts need to be on top now, otherwise the corrugated nuts are digging into the soft aluminum of the arm itself. The studs should go in from bottom. You can see the corrugated surface on the ball joint plate that is designed to hold the nuts from coming loose. Although with that S3 hub it doesn't appear as though there's room. Perhaps combo of S3 hub and TT arms not ideal. I suppose this should work but that alloy arm isn't designed to have the nuts tighten directly against it.
Laurent, the ET of my BBS is 46 but on the track I'm using my OEM 17'' with ET51 . Boston, maybe if I'm cutting off those 5mm from the top of the screw, where there's no thread It can be reversed without touching the hub with the nut !
Bigger track width is better if you have enough room to accomodate the wheels under the fenders. Now, maybe the 8.5J + ET46 and 235 tires are a bit too much but for the track I use 7.5J + ET50 and 225 tires wich is about 30mm more towards the inside wich is ok !
Offset must be between 45-51 with 7.5 to 8.5J rims and 225 or 235 tires. Less than 45 will lead to fender rubbing and more than 51 will touch the damper. Unfortunately there's not much play with the OEM fenders !
Hi, I am really thinking about getting all of this but I have a question. Did you try to use the GTI bearings in the S3 hub. I ask because my car is a 2011 with 12k miles on it and I don't want to spend an extra few hundred bucks on bearings if I don't have to.