Last post on Oct 20, 2012 at 9:08 AM
You are in the Lexus RX 400h
What is this discussion about?
Lexus RX 400h, Tires, Wheels, Hybrid Cars, SUV
#1 of 53 Lexus RX 400h Tire/Wheel Questions
by PFFlyer@Edmunds HOST
Oct 24, 2006 (5:32 am)
Discuss tire and wheel options and problems here.
#2 of 53 Tire pressure monitors & XM
Jan 31, 2006 (7:08 pm)
Why no tire pressure monitors on the RX400h? As tire pressure is important to fuel economy it seems a bit weird not to have 'em on a hybrid. Besides I thought they were required by law after 2005.
One other question...the new RX400h brochure noted that XM radio would be available in February. Can that be added by the dealer to a vehicle purchased earlier?
#3 of 53 Tire wear and wind noise
Mar 24, 2006 (8:54 am)
For the last couple of weeks I've noticed what I would call "wind noise" when I'm driving around. It's especially loud out on the highway; much more than I would anticipate from the normally cushy, quiet Lexus. It sounded like maybe a window was cracked open but I checked them all plus the sunroof several times. I took the car to the dealer a couple of days ago and when we took a test drive, the diagnostics specialist said it sounded like "we were driving in a cross wind". When we got back to the shop he checked a couple of things and they are still working on it. One thing he pointed out was that the front tires were wearing unevenly while the rear tires were pretty good. He said that's not unusal in this car but I just had it in for the full 10K service a couple of months ago so at best the tires have 12K on them. He said the tires could be causing some of the noise. Has anyone else experienced either of these problems? Could they be related?
#4 of 53 Re: Tire wear and wind noise [vdoc]
Mar 31, 2006 (2:57 pm)
The tires could be causing the noise. I've experienced this after rotating unevenly worn tires from the back to the front on other cars. If you do a Google search for tire roar, you will find many complaints of uneven tire wear on the front tires of 350Zs causing tire roar. If you do a Google search for tire noise, you will find info on that neglecting tire rotation on FWD vehicles can cause uneven wear and tire noise or humming. Cross switching the front tires to the rear may lessen your tire noise.
#5 of 53 Tire Pressure
Oct 30, 2006 (8:13 am)
I am just curious what other peoples tires and pressure are on their 400h.
Michelan 235/55R18 99V 38 PSI is what mine is at. After driving it home from the dealership I found the front tires at 37 and the back tires at 38 so I just inflated the front tires to match. I noticed that the recommended PSI on the door is 30 and that the max PSI on the wall of the tire is 44.
I am looking to squeak out as much MPG as I can but do not want to overinflate the tires.
#6 of 53 Re: Tire Pressure [straub]
Oct 30, 2006 (11:20 am)
Lexus ships the 400h from Japan with high pressure to avoid flat spots on the tire. The dealer is supposed to reduce the pressure to between 32 and 34 at delivery. Mine came with the pressure at 44. I called the dealer, and they are the one's who recommended 32 to 34.
#7 of 53 after tire changing service?
Oct 31, 2006 (1:52 pm)
Does the 2006 model not hv the tire pressure monitor system?
The 2007 does and frankly, after reading it, maybe wishes I didn't have it.
Something about after changing to new tires and take it back to Lexus for hook up (?) which probably means $$ out of my pocket.
Can someone shed some light to this?
#8 of 53 Re: after tire changing service? [ravlegend]
Oct 31, 2006 (2:22 pm)
2006 400h did not come with tire pressure monitor. Not sure why it didn't since all other 2006 Lexus models did come with it.
#9 of 53 Lexus 400h Tire and lousy service at Pohanka Chantilly
Nov 19, 2006 (1:59 pm)
We have taken our vehicle as specified by manufacture recommendations and at 10,000 miles the tires were rotated. Since then there has been a terrible shimmy and vibration up thru the steering wheel. It is not constant but enough to be very irritating. We have told the service people immediately about this and on subsquent maintence visits we hear the same line "you need new tires". How is it that this started immediately after the tires were rotated at 10K service?
Now we are at 30,000 miles maintence. The shimming and vibration is even worse now than it has been ever. Guess what the lexus service is saying - ..."you need new tires." How is it this is ONLY a tire problem and not an alignment or steering problem since it has been going on since 10,000 miles on vehicle?How is it a $51,000 car has tires which only last for 10,000 miles.
#10 of 53 Seems a long rotation interval
by PFFlyer@Edmunds HOST
Nov 20, 2006 (5:11 am)
I've always done rotations between 5000 and 6000 miles. Any longer than that and you can start to get unsual wear. And when you rotate worn tires, you CAN suddenly get unusal vibrations andnoises with the worn tires in a new location.