Psi
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Lexus Test Driver
Joined: Sep 2014
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From: IN
Psi
I'm currently at a tire shop getting g what I thought was a new tpms sensor (now apparently, ironically, another one has a weak signal and it has to be replaced, whatever).
I had my psi at 40 and he told me that it was too high, and that it should be at 33 tops!
Thoughts?
I had my psi at 40 and he told me that it was too high, and that it should be at 33 tops!
Thoughts?
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Racer
Joined: May 2004
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From: FL
33 psi all around has, indeed, always worked best for me. I only pump the spare a bit higher, only so that I get to inflate it less frequently before the light comes on during winter.
Random tidbit of information... The 600 requires 33 in front and 36 psi in the rear tires. It paid to read the label on the door jamb that I expected would be the same as on the 460
Random tidbit of information... The 600 requires 33 in front and 36 psi in the rear tires. It paid to read the label on the door jamb that I expected would be the same as on the 460
33 psi is so low ,but if that's what lexus recommends I guess you should do as your told.
Personally I would never run any wheel under 40.
On both my cars I'm currently running 50 psi
Personally I would never run any wheel under 40.
On both my cars I'm currently running 50 psi
Lexus Fanatic
Joined: May 2012
Posts: 68,486
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From: Maryland
LOL, why would you never run a stock wheel under 40? You may be running 50, but on huge wheels...its entirely different.
If Lexus says 33, then 33 is fine. The reason you buy a car like this is the smooth cushy ride IMHO.
FYI, the pressure on our 98 LS was 29!
If Lexus says 33, then 33 is fine. The reason you buy a car like this is the smooth cushy ride IMHO.
FYI, the pressure on our 98 LS was 29!
Lexus Test Driver
Joined: Apr 2015
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From: Texas
Pole Position
Joined: Apr 2015
Posts: 377
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From: MN
My A6's fuel door says I should be around 33 also but I always fill to low to mid 40's so 50's isn't that bad. I haven't messed with the LS yet because I haven't had a chance to but currently my car reads 40 after my last service at Lexus on all 4 tires.
Lexus Fanatic
Joined: May 2012
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From: Maryland
Your LS on 40PSI rides notably firmer and harder than its designed to ride. The difference is very noticable.
Last edited by SW17LS; Jul 12, 2015 at 12:33 PM.
Pole Position
Joined: Apr 2015
Posts: 377
Likes: 18
From: MN
50PSI on the OEM tires on your Audi seriously could be over the max pressure for the tires. 50PSI is VERY high. The max pressure on the LS' em Bridgestones is 50PSI, meaning the manufacturer does not recommend inflating the tires beyond that pressure.
Your LS on 40PSI rides notably firmer and harder than its designed to ride. The difference is very noticable.
Your LS on 40PSI rides notably firmer and harder than its designed to ride. The difference is very noticable.
Obviously I'd never run the current tires on the LS anywhere near 50 PSI but if I was to get some after market tires I'd probably inflate higher. But like I said, they're currently at 40 since that's what the dealer set them to and I haven't had a need to change.
50PSI is pretty high, but if you have a tire that that can handle it it isn't unreasonable assuming you can deal with the ride. On my Audi I fill higher because handling is improved in the summer. Also in the winter, since I run a 35 profile tire, it prevents too much flexing of the sidewall. Also it helps with gas efficiency which goes in the dumps in the winter.
It's all up to preference though. If someone is comfortable running at 50 PSI, more power to you. If you like the comfort of 33-35 PSI, more power to you also.