RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

Which one do I trust?

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Old 11-23-14, 02:14 PM
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JProdun
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Default Which one do I trust?

Apologies if a similar subject has been discussed pr if i'm posting in the wrong place.

I have these two tire pressure gauges and the read a different psi.

About 3 psi difference between the two.

Here's this:
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Old 11-23-14, 02:15 PM
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JProdun
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This one reads higher.


Which ones are guys using and which should i trust?


Thanks in advance!

Appreciate!
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Old 11-23-14, 03:23 PM
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It depends...which one has been dropped more?
Old 11-23-14, 03:24 PM
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alchemist
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set the tires where the digital one reads 34psi and the analog one reads 31psi and you'll be fine
Old 11-23-14, 05:08 PM
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JProdun
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Lol, neither was dropped

Why would would 31 analog and 34 digital be hood?
Old 11-23-14, 05:20 PM
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Raoul
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Confucius says,
Man with a watch knows what time it is.
Man with two watches, never sure.
Old 11-23-14, 06:55 PM
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JProdun
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Raoul, that's deep thanks!

I've had the analog for quite a while and was always sure that it read correctly ( had cheapo ones before ), but when i was ordering a new pump to have in the car, i also ordered the digital gauge. Just to have it. As it's got a backlit led display which would make for an easier readout during evening and night hours.

This is my story
Old 11-23-14, 07:55 PM
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alchemist
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Originally Posted by JProdun
Lol, neither was dropped

Why would would 31 analog and 34 digital be hood?
Because hopefully it gets you to 32.5psi and you can call it a day
Old 11-24-14, 02:02 AM
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pauljcl
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Originally Posted by JProdun
Lol, neither was dropped

Why would would 31 analog and 34 digital be hood?
Seriously - several methods:
1. Check the gauge against a known gauge (e.g. at a tire shop or at a Lexus dealer)
2. Preferred method. - Lexus recommends 30 psi all around (I have an AWD 2009-RX350). So: Set the tires at 30psi using the analog gauge and see if you feel it is OK. If you feel you want a higher psi for better control, less comfort, increase psi. Once you have settled on what you want, remember where it is on each gauge and use the gauges accordingly.
In fact, within 3 psi really is not an issue.
3. My TPMS was factory set so that it triggers an alarm at 27 psi, i.e. 10% below the recommended 30 psi. Slowly let air out of one tire until the TPMS triggers, then check the pressure with both gauges....
4. Buy another gauge so that you get thoroughly and irrevocably confused
Old 11-24-14, 07:08 AM
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JProdun
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You got a point
Old 11-24-14, 09:45 AM
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takeshi74
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Originally Posted by JProdun
Which ones are guys using and which should i trust?
No idea what guys are using but I use an Intercomp.

There's really no way for us to determine which of yours is correct or even if one of them is correct. They could both be wrong.
Old 11-24-14, 10:53 AM
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kickin8
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Originally Posted by Raoul
Confucius says,
Man with a watch knows what time it is.
Man with two watches, never sure.
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