Just bought a used 07 RX350 with 103K miles. The tires are terrible so first thing is to replace them. The road noise increases as speed increases. I'm not 100% sure its the tires. It does have a roof rack so I will be checking them as well. Any other clues of what it might be? It's louder in the back almost like a bad bearing in the rear end but this one is front wheel drive so there in no rear end. I tried a search but got too many results and couldn't find much without going through tons of post/pages.
Thanks,
George
