Hi brother, i my GM6 was about 7 yeas too, feel that daily road drive feel getting more STIFF feel & very bumpy when cross small stone / small bump , (stock absorber & spring)
even i was change new absorber brand KAIFA , bush as well but  still not improve of it. obvious when cross the road line ( Yellow line - not event RED line )  like no cushion   

tire pressure : 200~ 210 kpi

will you guys feel like this too ? how about the coil spring ? will it getting

otai2 any advice on it ?

Steering vibrate when driving on uneven road.