One thing to check is the tyres .All four should be the same make so as to have the same characteristics, and all four worn equally.If not all worn the same, the larger two need to be on the rear to ensure the TOD system works correctly.Wolves55 said:Thank you to everyone who replied to our post. we have purchaed a 2005 XS Auto today. it gets it towbar fitted on Wedneday are will try it out next weekend (hope for some sun lol).
The reason for my previos reply is that we had a chap in a couple of weeks ago and he had vibrations.Changed two of the tyres so they were all same make and problem solved. Different makes have different side wall characteristics which can vary the distance of the center of the hub to the road surface. This gives the same effect as differing size tyres.Also tyre pressure is important.otherclive said:It's not essential to have the same tyres as I had original Kumho on the front and Avon unidirectional on the rear then the Avons went on the front and new Avons on the back. Then I moved to Yokohama all terrain on the back with Avons on the front finally going to all four Yokohmas. But you do have to make sure back ones have the deepest tread if all four are not the same. One thing to check on the service log is for the Transfer Box oil to have been the revised type introduced around 2005-6 especially if you have the ATT/TOD 4wd system. It gives better protection to the TB than the first oil. Look on the Kia forum for details.