the thing is they are on cupra shocks wich are slightly lower than standard anyway,
the springs are 60mm on the front and 40mm on the rear, i had a friend who had his cupra for 3 years, he bought it on lowered springs and standard shocks and never bothered to change them and he never had any problems
i think it one of theese things, if u have money to spend then dont use springs but if ur poor and you have many friends who are mechanics who would fix it if it went wrong anyway then i dnt see any
problem