i got a clio 1.2 05 plate lowered 60 mm on some normal lowering springs and i think it needs some spacers, i dont know what mm to go for though, im stuck between either 15 or 20 mm, or if any of you have done what i wanna do can suggest any better ? thing im thinking about is any scrubbing and also if i need the same mm on back and front, for example would i need 15mm on front and 20mm on the back or just 15 or 20 all the way round ? so could i have some help pleaseeee