:chairshot:censored : I bought a 2002 Lexus SC430 with 95K miles and in good shape . . it had run flats that were bald on the rear and newish on the front - so I sold those and bought 4 KUMHO Ecsta LX Platinums - all season tires with 60,000 wear guarantee - on the recommendation of my mechanic. Needless to say the ride is softer but now bouncier and road imperfections that I never experience even in my wife's Mini Cooper are starting to give the car a shutter. Especially at interstate speeds, these road imperfections or pavement changes can be most disconcerting. I had the front end checked, tires rebalanced and alignment done - all that we can come up with is the tires have changed the car so drastically that I now prefer my 1996 BMW convertible's ride to that of this lexus. H E L P -- send all suggestions to quickclick@gmail.com they will be read and appreciated