SW17LS

I would try the lower pressure. What do you have to lose?

That illustrates the point, my 04 430 was 30 if I remember correctly. It's exactly the same car as your 06, so why the change?

As for tires I'm very happy with the Pirelli Cinturato P7 Plus on mine, but again I still find it rides better on lower pressure.

comotiger

So, once I adjust all tires including spare to 30 psi, I will reset TPMS, and I will be good to go?

2v1g

For the tires, we don't have tire rack in Canada, so I check the costco canada:

Michelin - Pilot MXM4 97V $285
Bridgestone - Turanza EL42 97V $297
Michelin - Premier LTX 97V $275
Michelin - Pilot Sport A/S 3+ 97Y $259
Michelin - Latitude Tour HP 97V $258
Michelin - Primacy MXM4 97V $230
Bridgestone-Turanza Serenity Plus 97W $270

Which tire give me more smooth quiet ride and good in the winter? what is difference between 97V, 97W or 97Y?

SW17LS

Won't even have to reset the TPMS. Mine didn't care.

I wouldn't choose any of those tires, I would and did choose the Pirelli Cinturato P7 Plus. You may not be able to order from TireRack but you can use them for research, the Pirellis are the highest rated grand touring tires for ride and noise.

The V, W, etc is speed rating. The higher the speed rating the beefier the sidewalls which is going to reduce ride quality, not improve it. That's why you want to stick with V rated tires.

FYI the Latitude and Premier LTX tires are SUV tires, you don't want those. The Turanza EL42 are the OEM 18s on the LS, they're terrible, I replaced those with the Pirellis. The Primacy MXM4 are fine tires, I've had them but they're old and expensive. The Turanza Serenity would be an option but I would not because of the speed rating in our size.

Check out TireRacks reviews and surveys and ratings. Makes it pretty clear.

superdenso

You don't have TireRack, but maybe you can benefit from the research and reviews that are availabe on their site. As long as the Michelin has a UTQG of 500, I would use one of the three below in the order listed.

Michelin - Pilot Sport A/S 3+ 97Y $259
Michelin - Pilot MXM4 97V $285
Michelin - Primacy MXM4 97V $230

roadfrog

I would have said shock absorbers. I know mine are needing replacing.

roadfrog

Try 1010 Tire in BC. Nobody beats their prices.

2v1g

I am ordering Pirelli Cinturato P7 Plus for its smooth and quietness even though lots of reviews mentioned poor wet traction. The tires have to ordered and arrive in 1-2 weeks.

I am picky. Other people don’t notice it, but I notice My LS430 has occasionally “goo-loo” sound and dealer said the shock absorber needs to be replaced. My LS460 doesn’t have “goo-loo” sound.

When LS460 hits pothole, it almost feel no tire on the rim and the car direct hit on the rim. So instead of lowing tire pressure, I almost want to increase the tire pressure from PSI 33.

When my LS460 hits V shape surface, it feels like the suspension prematurely take the maximum hit and make “thumb” sound.

Hope my new tire will address both issues.

2v1g

Smooth ride, no issue on most of the road except V shape road or pothole,

SW17LS

My Pirellis are very good in the rain and snow.

You don't want to increase the tire pressure. The higher the pressure, the harder the ride. Trust me, try it. What do you have to loose? Want more proof, check out the tire pressure thread in the ES forum. 4-5 people there reduced their pressure to 30 and all report softer rides.

If your 430 needs struts it may be also that it rides softer than it should. If you replaced the struts in the 430 it might ride a little harder too.

2v1g

I will try lowing the tire pressure. 430 always ride smooth and supportive, "goo-loo" noise just happened 2 weeks ago and I will get it fixed next week.

I bought my 06 LS430 in MN 2011 with 5 years extended platium warranty, I went to test 8 pre owned 05-06 LS430, only one has the silky smooth drive.

I bought my 2011 LS460 in Toronto Canada, again, 5 out of 6 2010-2011 LS460 don't drive very nice.

2v1g

From my experience, only 10-20% pre-owned LS drive as nice as it should.

SW17LS

People are hard on them, no doubt about it. A lot of it is tires too. Dealers use cheap tires.

electro992

We have a LS430 with 17's and standard suspension, and a LS460 with 18's and air suspension. Both cars on Michelin tires and both cars owned since new. The 430 has always been the more comfortable riding car. It seems to glide over rough surfaces where the LS460's suspension is "working" more, feels very busy and louder over imperfect roads. I think part of what you are feeling is just the nature of the car and the different design priorities vs. the 430.

2v1g

Air suspension on Lexus LS and BMW 7 make them drive like a boat and give me a little bit motion sickness. I actually like the air suspension in Jaguar XJ, it feels like sitting in a queen’s car, very smooth over bumpy road, but doesn’t give you motion sickness at the same time.