desnard

OK, I feel kind of silly but at least relieved to have corrected the problem. When my tires were replaced a couple of months ago, I mistakenly assumed that they would put the proper air pressure in my brand new tires. That was Treads and Care Tires, not Lexus. When I brought it in on the recent visit to Lexus, and complained about the ride, they discovered that my tire pressure was approx. 42 psi in almost all the tires. Once they reduced it down to 32 psi, it completely changed the ride. So lesson learned...don't assume that the tire installers put the correct pressure in. Thanks for the replies! Donna

My 2010 RX 350 has 35K miles on it. The last several months I've been finding the ride starting to get rougher...able to feel even the smallest of bumps. I recently replaced the tires with the same OEM Michelin Latitude Tour HP thinking I would see an improvement. I had to bring it in to the dealer today for a brake inspection, and indeed, the front brakes needed to be replaced. I was given a 2013 RX350 as a loaner. The difference in the ride was night and day. The 2013 was vastly smoother. Should I be looking at some other cause like suspension, bushings, etc. as the cause for the rough ride?