So about 1k mi ago i had 2 new DWS tires put on the front and the 10k mi old dws to the rear. Right after i noticed (all the time) a shuddering like feeling almost like there are a bunch of rumble strips in the road is the best i can explain it. So i went back the next day and had them rebalance it and it was gone. Now since then i have noticed when i first start driving it will still do it between 50/60 and then after a few miles of driving it goes away. So im wondering do you think they just failed twice to balance them correctly or do i have a faulty set of tires? The manager did say there balancer was down so they had to do it the old school way, whatever that means. Thanks everyone

 

When I worked at Lexus we had this same thing happen to several new cars, mostly the ones with low profile high performance tires. ( IS line and LS 460 ) We came to the conclusion that it was the tires being so soft they developed a flat spot from sitting for a few days. The reason the vibration goes away shortly after driving is they heat up enough to make the spot smooth back out.

You could also have a bad tire? Ask them what the road force numbers are when they balance them. The lower the number the better. I would take it back and have them balanced again.

 

Went to a different belle tire Thursday that had their machine working and sure enough my tires were way out of balance from the othe location doing it "the old school way" So now my TL rides smooth as silk