GX - 2nd Gen (2010-2023) Discussion topics related to the 2010 + GX460 models

Any way to improve ride on a premium model?

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Old 10-14-18 | 05:43 AM
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Default Any way to improve ride on a premium model?

My 2018 premium can be jittery and bouncy on small rough imperfections. Not expecting LS levelmof isolation but if you found the ride to be rough, what did you do to improve it? I know getting lighter aftermarket wheels will help, but thats an expensive proposition on a leased vehicle.
Old 10-14-18 | 05:54 AM
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What are you running the tire pressure at?
Old 10-14-18 | 06:10 AM
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I dont have an air meter and the dash doesnt indicate it. I havent touched it since getn the car new from the dealer a month ago. The ride has improved a bit from day 1 though.
Old 10-14-18 | 06:20 AM
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EDIT: Always a chance suspension will still settle in some more as well but at month I can't imagine much more. How many miles?

Tires might be inflated too high so not likely to trigger TPMS unless really high. I can't remember what the high pressure trigger is.. You might want to pick up a cheap tire pressure gauge at auto store to check. Confirm or lower to 30-32 PSI. Do this first thing in the day before driving and not after driving as tires will be heated up and pressure will read high.

I notice in some other markets they suggest 29 PSI but that seems low to me


Last edited by Acrad; 10-14-18 at 06:24 AM.
Old 10-14-18 | 05:58 PM
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Originally Posted by Acrad35751
EDIT: Always a chance suspension will still settle in some more as well but at month I can't imagine much more. How many miles?

Tires might be inflated too high so not likely to trigger TPMS unless really high. I can't remember what the high pressure trigger is.. You might want to pick up a cheap tire pressure gauge at auto store to check. Confirm or lower to 30-32 PSI. Do this first thing in the day before driving and not after driving as tires will be heated up and pressure will read high.

I notice in some other markets they suggest 29 PSI but that seems low to me

Just a bit under 1000 miles. Yea Y think i might pick up a cheap gauge. I guess it is what it is.
Old 10-15-18 | 02:47 PM
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It is a body-on-frame truck, and doesn't have the smoothness that a sedan or an RX would have. For what that's worth.

But yeah, check your pressures.
Old 10-15-18 | 04:04 PM
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Not much you can do after you bought/leased it...
Did you drive it before you signed your paperwork?

I would never buy a car I never drove myself, but I hope you get used to the feel of the truck.
Old 10-15-18 | 08:16 PM
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I recommend lighter 17" wheels and refined all-season 265/70R17 tires.
Old 10-16-18 | 01:47 PM
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Originally Posted by User21c
Not much you can do after you bought/leased it...
Did you drive it before you signed your paperwork?

I would never buy a car I never drove myself, but I hope you get used to the feel of the truck.
I test drove it quite a few times and the ride was great. I do believe I need to let some air out of the tires, just havent had time to get around to doing that.
Old 10-16-18 | 02:04 PM
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Looking at codes above looks like they recommend 32 PSI in China (URJ150L-GKTZKC) and 29 PSI in Middle East GCC (URJ150L-GKTZKV) and Sales Region Europe which is probably Russia and associated former republics (URJ150L-GKTZKW)

US or North America appears to be either (URJ150L-GKTZKA) or (URJ150L-GKTGKA) and we are 32 PSI too.

https://www.megazip.net/zapchasti-dlya-avtomobilej/toyota/lexus-gx-42397/urj150-55841#year=2012&engine-1=all&atm-mtm=all
Old 10-16-18 | 02:37 PM
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When I still had my stock tires (Michellin) I ran 32 PSI with Suspension in Sport mode and it was really nice.
But I usually like to have my tires a bit firmer so I run 34-35 PSI in N mode. But softer tires with firm suspension is very stable.
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Old 10-17-18 | 06:36 AM
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Originally Posted by bbqsoup
When I still had my stock tires (Michellin) I ran 32 PSI with Suspension in Sport mode and it was really nice.
But I usually like to have my tires a bit firmer so I run 34-35 PSI in N mode. But softer tires with firm suspension is very stable.
How do I get into sport mode? I dont think I have that **** on the premium model.
Old 10-17-18 | 08:19 AM
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Originally Posted by situman
How do I get into sport mode? I dont think I have that **** on the premium model.
Yeah... that would be '10-'13 Premium, 14+ Luxury or a crawl converted vehicle. The last one could be confusing to some future buyers of a retrofitted GX with crawl if they weren't made aware of the conversion.
Old 10-18-18 | 07:03 AM
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So apparently some idiot at the dealer decided to pump my tires to max allowable tire pressure (Michelin spec) instead of Lexus recommended tire pressure. I was at 51psi!!!!!! and that was on a chilly 40 degree morning. Lowered it to 40psi and the tires were squatting quite a bit so I left it at that. The ride improved considerably. I might lower it to 35psi and call it a day as I'm sure when the temps drop my psi will drop as well plus natural air loss.
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Old 10-18-18 | 08:09 AM
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Whoa, 51 psi!!! I've never gone that high on any vehicle I've owned... that's insane.


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