Coreen

I am a Lexus service consultant and have been for 19 years. Our dealership started experiencing multiple customer vibration complaints a few years back. All the cars were 2015 RXs with Dunlop Grand Trek tires. Most we cleaned out and sent on their way. 2 customers, however, returned multiple times. We replaced the tires on both cars with Michelins and the problem did not come back. I noticed the pattern and raised a red flag. I contacted our Dealer Tire specialists and asked if any other Lexus dealers were experiencing the same issues and was emphatically told that it was an equipment problem. Not a chance. If it were, all of our customer's cars would be having issues with water in the tires and not just this specific car with these specific tires. I continued my questioning and contacted one of our traveling field respresentatives (whom at first thought I was crazy). He started asking questions at various dealers in his travels and found multiple cases in multiple stores .....all in Dunlop Grand Trek tires on 2015 RXs. Not all of these dealers have equipment issues that are exclusive to Dunlop tires. An earlier post thinking it may be rim related is not a factor because we've had mutiple kinds of rims with same issue and different tires on the same rims did not have an issue. It is the tires. Still have not determined how. The closest explanation we can come up with is something salt-related (as the field rep spent time boiling some of the water into steam to see what residue was left...salt???). At this point it seems to be and eternal mystery of magic. By the way, although the customer concerns are for vibration, we (and other dealers) have found multiple Grand Trek tires with water in them as tires are being changed out with new tires in used car situations. I am just happy to be contributing this post to know that I am among friends and we are not crazy.