Usually, a service history is maintained to track necessary replacements, like:
Oil/Oil Filter change every 2,000-5,000 kilometers
Air filter change (with every oil change or 5000km)
Fan belt change every 15000km
Cambelt change every 25000km
tyre change every 50,000km
Alignment/balancing every 10,000km
Car bushes (CV joints, Ball joints, arms) etc after every 100,000 km
all the values given above are not the REAL values and can't be followed as they are...
what i'm trying to say here is that when the car hits the road, it wears and tears... necessary replacements can only be tracked by maintaining proper service history.. On-time servicing makes sure that you don't get your car break down in the center of the road...One can maintain the service history for a new car but in case of second hand car, it is much difficult to approximate the remaining life of car parts.
There are two answers to the question:
1. Change all the bushes (if you can find genuine ones..). this would ensure "No-Tension" on bushes part. Plus it would be cost effective in terms of labour.
2. Opt for needed replacements only. Arm bushes which i got changed (on right side of the car) in september, lasted for only 2 months while the genuine bushes which were not changed(on left arm), were still there...
in another case, I changed a CV-joint and it turned faulty right after i left the workshop.. i have to change it again now...
the thing is that, it's tooo hard to get anything in best quality except from SSS dealers....
P.S: "All those korean and chineese parts are made in Lahore with different stamps... someone told me so..."