Here is a slow tune for the BMW Z4,there is a couple changes i made on the way.Have a bash if ya want,no record breaker but if ya slow like me its all fun. Add the bits you want.
630pp 632bhp 1190kg 48:52 Weight Racing Soft Tyres
Body: 380/560
Power: High Turbo @ 76.3 %
Diff: 8/13/10
Trans: F.G. 3500 Top Min 1st 4816 2nd 3737 3rd 3049 4th 2525 5th 2113 6th 1766 F.G. 2216
Susp: 82/85 Min/Min 1/1 1/1 7/7 0/0 0/0 Brakes 5/4
Not the fastest but netted me a 1:48.186 so far, the gears are still a bit rough and surprised how well it drives with the lower down force.
Edit: made some changes which has got me a 1:47,954
Body: 360/550
Diff: 5/13/16
Trans: 2nd 3770 3rd 3073 4th 2564 6th 1768 F.G. 2200
Susp: Height 70/95 Toe -0.04/0.0
and you can add body rig as well if you want,remember do not change oil....Hope this helps a bit more
Here is some more changes if you want to try
Body: 360/500
Diff: 5/13/5
Trans: Default top min 1st 4656 2nd 3608 3rd 2949 4th 2461 5th 2042 6th 1733 F.G. 2240
Susp: Toe -0.06/0.18 Brakes 4/3 or ?
!:47.295 i ended up on, that will do,i had dirty oil so power was 642 bhp about 82 % about 7200+ k's