do you have another set of wheels you can try? so even if there's just a slightest bit of water on the pavement, barely wet, it will do the wiggles?
I still think the wheels /tires could be causing it. I wonder what the camber/toe looks like on your vehicle. there were a few lexus threads on water pooling in rims too. roadforce balanced tires?
have you tried rotating the tires to see if it moves from front to back, left to right or vice versa. perhaps it's only one tire
shaking in the rain - ClubLexus - Lexus Forum Discussion
Very strange front end shake and wobble.... - ClubLexus - Lexus Forum Discussion
