right i wana lower my car 60mm, and was just gona get springs, i just wondwered how long my standard dampners will hold out and wot the ride will be like once if the shocks go?

My car is lowered -35 front -40mm rear torsion bar. front is on g-max springs with standard dampners. ride is ok but i know it want last forever. if you lower it by 60mm you will have to uprate everything, as there will be less travel so you car will bottom out more causing loads of damage.