my 1997 xj6 is swerving while driving straight, could this be caused by the rear suspension needs to be changed

 

It could be front or back end causing it. Have all the links looked over to make sure they are still solid. Toe outward, front or back, will also give you a "darting" sensation.

 

Better to post in the X300 forum, the one for your car. X350 suspension is completely different to the X300.

 

It could be anything from a binding brake to a flat tyre, via suspension bushes, wheel bearings etc. etc... Yes it could be caused by something in the rear suspension needing to be changed, but equally it might not! Can you give us any more to go on?

 

Welcome to the forum jag97,

I've moved your question from X350 to X300 forum. Members here with the same model will be able to help.

When you get a minute, please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some info about yourself and your vehicle for all members to see.

In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham