have been looking for lowering springs for my astra coupe bertone 1.8 2004. i would like to lower it 60mm all round but i think it would be too far into the arch at the front. i have 215/40/17 wheels on it. cant find offset on them tho. its not written on the inside of the wheel as usually is for some reason. is it possible to get 40/60mm springs together?
this is it