Has anyone experianced this after getting larger wheels? I've talked to a few IS300 and GS400 owners that said they feel a vibration after running 19's. Seems to vibrate when around 65-70 and just cruising.
Thats what I thought, but it does it all the time, even on newly paved highways. Hmm, maybe its just one of those things that you have to get used to. Dealer told him that the car was in perfect shape.
Have the force variation checked on your tires. I ordered a brand new set from the Tirerack and 3 out of the 4 (18" Pirelli Neros) were over 2x the recommended force variation. This causes tremendous vibration.