got 20 inch wheel but label says 19
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got 20 inch wheel but label says 19
I bought a 2011 GL450 which i believe it came with the appearance package since It has the 20 inch wheel and the running board. But the label on the driver side says 275/55/19 32 PSI-front 38 PSI-rear. Is this normal for GLs with 20inch? What would be the correct PSI for if have 20's? Thanks
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i would run the following psi on all four corners on trucks that are regularly driven with 4 or less people on board:
18" - 30-32 psi
19" - 32 psi
20" - 34 psi
would not run anything larger that 20" on those trucks as front suspension as far as i am concerned is weak- especially the steering rack...
so.. in my experience the values above provide the best compromise of tire wear, handling and comfort. on 18" and 19" i would run even closer to 30 psi, but the wheel pressure sensors are hard coded to show low pressure condition at 30-ish so your dash will lit up.
Last edited by alx; Mar 22, 2017 at 08:41 AM.
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Senior Member
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2008 GL320CDI (310k) & 2017 GLS450 (160k)
I have over 20k miles on both sets. I just removed one and put the other one on. I would have notice a difference. But if it is such a small wear that it is not noticeable, I don't care 
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From: Emmett, ID, USA
2007 GL450
It varies by tire, both by maker, by design, and by size. The Ecstas, final weird problem notwithstanding, seemed to want even higher pressures. I was running 38 front 43 rear. One-size-fits-all pressures simply don't work.
Get a caliper - and monitor your tire wear as it depends on pressure.
It's better to err on the side of too much pressure than too little. Tires underinflated wear faster than overinflated by the same amount.
Last edited by eric_in_sd; Nov 14, 2018 at 10:25 AM.
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2008 GL320CDI (310k) & 2017 GLS450 (160k)
Does anybody know what the sticker on the door jamb says about pressure for 18s, 20s and 21s? I can't find this in the owner's manual. For 19's it's 32 front and 32/38 rear (unloaded/loaded). 
