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Lexus LS 430 Suspension and Drivetrain

21 messages,  Last post on Nov 21, 2009 at 9:12 AM

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What is this discussion about? Lexus LS 400, Lexus LS 430, Tires, Suspension, Sedan


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#1 of 21
LS430 Suspension and Drivetrain by lucian95
May 08, 2007 (8:10 am)
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I bought LS430 in 02 and currently it has 106K miles on the odometer. I hope somebody could offer some advice to my question: I recently noticed, during my regular highway commute, a sound consistent with a tire being slightly out of balance or perhaps having a flat spot. It's coming from the rear. I checked with a tire place and they couldn't find anything wrong with tires, but they said I'll have to live with it until the next replacement (Toyo Proxes TPT with 36K). After a week, they rebalanced all 4 tires and replaced the rear ones. The sound did not go away. Could this be linked in some way to suspension wear and tear items. I do mostly highway driving. Any suggestions will be greatly appreciated.
 
Andre
#2 of 21
Re: LS430 Suspension and Drivetrain [lucian95] by nvbanker
May 09, 2007 (9:35 pm)
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Replying to: lucian95 (May 08, 2007 8:10 am)

If you've eliminated the tire as the problem, it has to next be in the moving parts remaining, ie; brakes, wheel bearings, CVJs, etc.... A qualified mechanic should check it out.
#3 of 21
Tires for LS 430 2004 by jerry5505
Oct 11, 2007 (6:13 pm)
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I am checking out tires for my car. At the Present time I have Dunlop 5000's which have approx 40,000 miles on . Is there anyone out there who have had experiance with other tires and mileage they got out of them?? Please let me know.
#4 of 21
Re: Tires for LS 430 2004 [jerry5505] by mrcleaner
Oct 11, 2007 (6:42 pm)
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Replying to: jerry5505 (Oct 11, 2007 6:13 pm)

I have a 2004 LS 430 and I replaced my Dunlop 5000's with a new tire by michelin, "Primacy MXV4". They are very quiet and have soft ride, I have put 5000 miles on them and am very satisfied, would highly recommend them for the LS. They also carry a 60,000 Mile treadlife warranty. Check the Michelin web site for further info, not much feedback on line about this tire because they just came out for sale 6/1/07. I wrote a post about this tire msg #8135 if you want to reference back. Hope this info helps.
#5 of 21
Re: Tires for LS 430 2004 [jerry5505] by lucian95
Oct 11, 2007 (7:44 pm)
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Replying to: jerry5505 (Oct 11, 2007 6:13 pm)

You've done well with Dunlops. I believe mine were changed after 35K. Next, I bought TOYO Proxes TPT and I'm into 50K with them. They will go for another 20K. However, they are not as confidence inspiring as Dunlops were (a lot more spinning of rear wheels, especially on wet), but otherwise they are quite reasonable tires. It all depends on your driving style and with good tires, it is always the same story-more performance oriented tires will provide less tread life. If you desire more performance, I'd suggest you stay with Dunlops, because they are excellent tires (ultra high performance all season)or alternatively, try high performance all season, like Bridgestone Potenza G009. They got good reviews on tirerack. I suggest you check out www.tirerack.com and purchase tires from them. They will provide you with the recommended installers in your area.
 
Regards,
Andrej
#6 of 21
Re: Tires for LS 430 2004 [lucian95] by famwald
Nov 13, 2008 (6:02 am)
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Replying to: lucian95 (Oct 11, 2007 7:44 pm)

Next, I bought TOYO Proxes TPT and I'm into 50K with them. They will go for another 20K. However, they are not as confidence inspiring as Dunlops were (a lot more spinning of rear wheels, especially on wet)
 
I thought the factory-installed Dunlops had an awful lot of rear wheel spinning on our 2004 LS430, even on dry pavement.
 
After 40k miles and now going into winter, we recently replaced the factory-installed Dunlops with the Michelin MXV4 Primacy. I can tell that they grip the road much better.
#7 of 21
jerry5505 by jerry5505
Nov 16, 2008 (9:53 am)
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I purchased the Michelin Primacy MXV4 with a Warranty of 60,000 Miles about a year ago and I like them very much. Thanks for getting back to me.
#8 of 21
Struts/Shocks on 04' LS 430 Ultra by mrsincere7
Aug 03, 2009 (4:48 pm)
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Can someone advise me? I have a 04' LS 430 Ultra. Lately I noticed a rattling noise coming from the right rear wheel. When I drive down the street it feels like the car suspension is teetering from front to back. I hit bumps and it feels like the car sways before it corrects itself. I even tried to push down each fender. That r/r fender definitely has more bounce than the other sides.
 
Here's my question. Since I have the electronic air suspension, is there a shock absorber that can be easily replaced, or is it more involved, like replacing a special strut or special shock absorber for air suspensions???
#9 of 21
Re: Struts/Shocks on 04' LS 430 Ultra [mrsincere7] by nvbanker
Aug 09, 2009 (10:35 am)
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Replying to: mrsincere7 (Aug 03, 2009 4:48 pm)

The air suspension is a special strut, it's expensive, but is possible to replace yourself if you have some decent tools and a spring spreader. Sounds like you have one that is bad, but it should be allowing part of the car to sag I should think if it is. They are about $1,000 to buy.
#10 of 21
Re: Struts/Shocks on 04' LS 430 Ultra [nvbanker] by mrsincere7
Aug 11, 2009 (2:16 am)
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Replying to: nvbanker (Aug 09, 2009 10:35 am)

Thanks for the reply NV. You are quite correct, that strut was bad. In fact it was bad from the day I purchased the car a year ago, but didnt realize it was. When I started hearing a clunking noise coming from that strut that caused me to investigate further. Yes indeed that strut was around $1,000. Fortunately, I have a good and honest mechanic who ordered it ( about $80 to ship it overnight ) and installed it, all for $1,250. Not bad considering how much a Lexus dealer would charge for the same job.
 
Oh man what a huge difference in the ride!!!! Now I can fully appreciate what the air suspension struts do to make the ride comfortable and/or sporty. Major improvement from the 96' LS 400 I had before this LS 430. Thanks again for your input.

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