Steveo,
Are u running 18's as yours is an HSE, so originally u would of had 19"s.
You keep saying u are running 255/55's. (255/55/19-Originally)
Just want to double check as General make the tyres for both the Sport & D3 in 18".
Sport is 255/55/18
D3 is 255/60/18 which is slightly higher...

...i did say slightly..

If u are running 255/55's (18)then they are the wrong size! for the D3...
__________________
Ex 89 RR Classic V8i, Ex 93 D1 200Tdi, Ex 97 D1 300Tdi, Ex 98 D1 V8i LS, Ex 01 D2 Td5
D4 2.7 TDV6 in Alaska White
/ Almond/Arabica, E-Diff, 7 Leather Seats, Rear A/C, Sunroof & Bi-Xenons with LED Signature !
Keep Smilin'

Pete.