I have a 2004 LS430UL that I put a set of Serenity tires on. I got about 35000 miles on the original Dunlaps. I really like the new Bridgestones. They are very quite and provide a very smooth ride.

 

just installed 245/45/ 18' yokohama avid w4s on enkei tarmac hyper black rims, they ride very well. I have a lot more grip in turns now, the tires have a 400AA rating. they do give of a bit more noise at low speed though. but I'm happy with
the ride the rest of the time