Im pretty sure it's not the tie rods tires have sufficant air in them also. the only thing that's been messed with is the ps pump (i lost the lower bolt to put tension on the belt so no ps for the past 800 +kms. I've herd that running with out the ps pump going(same as with out the belt) will ruin you'r steering rack could this be the problem ?

car has 351,xxx km's

 

check your bushings and tie rod ends for any play

 

Vibrations at or above certain speeds are usually indicative of wheel balance or tire alignment problems. Start with getting that checked.

 

the end of the drivers side rod(closest to the wheel) will almost move in a clock/counter clock wise direction. hard to describe (don't know about the passengers side) bushings should'nt make you feel like you'r wheel's are about to fly off

 

i've NEVER had this much wheel shake from ballance/alignment not being done/in properly done. 100kph is not ver fast at all the whole car shakes also.

 

warped rotors/badly out of balance wheels will shake at freeway speeds as well