GTI: 5.0 "
Golf TDI: 5.4"
Golf 2.5: 5.4"
This comes from Germany. Keep in mind the suspension is designed as a whole system (springs, shocks, control arms, roll bars, wheels, etc., etc.) and the individual settings you see here are just part of the answer:
front anti-roll bar 2.5L = 21mm
rear anti roll bar 2.5L = 19mm (18.5 specifically)
front anti-roll bar TDI = 21mm
rear anti roll bar TDI = 19mm (18.5 specifically)
front anti-roll bar GTI = 23mm
rear anti roll bar GTI = 19mm (19.6 specifically)
Also: Front subframe and control arms are lighter so the spring rates have changed
Front Spring rates
GTI: 33 N/mm
TDI: 25 N/mm
2,5l: 23 N/mm
Dampers are adjusted accordingly based on the spring rates
posted by rookie http://www.myturbodiesel.com/forum/showthread.php?t=2147&