Tire Inflation Question

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Tire Inflation Question

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Tire Inflation Question - 4/25/2008 6:07:50 AM

Cuffy

Posts: 264
Joined: 1/27/2008
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When it's time for new tires, if you choose a non-OEM or different size what tire pressure information should you use? The info on the Outtie door jamb or on the new tires?

I have always heard that it is recommended to inflate the tires on a new car according to the info on the door jamb, but I've never heard anything about replacement tires. Since a new set of non-OEM tires will have different chararteristics (density, temp & speed ratings, tread depth) wouldn't the tire manufacturer info be more pertinent?

< Message edited by Cuffy -- 4/25/2008 6:15:43 AM >

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2007 XLS AWD
Diamond White Pearl w/Beige Leather
Luxury Pkg - Nav Pkg - Sun/Sound Pkg
OEM 18" 7-Spoke Wheels
Curt Hitch/OEM Harness

Post #: 1

RE: Tire Inflation Question - 4/25/2008 7:32:25 AM

roach

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Joined: 8/14/2007
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When I was looking at the toyo tire guide for the outlander 07 xls I notice that on there website there's a note saying ''NOTE: Replacement pressures (front and rear) need to be 33 PSI front and 33 PSI rear to carry the same load.'' So I presume that it should be the same for other tire brand to so you achieve the right carry load ect...

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National Capital Mitsubishi Club www.mitsubishiottawa.ca

(in reply to Cuffy)

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RE: Tire Inflation Question - 4/28/2008 7:28:26 AM

Cuffy

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Joined: 1/27/2008
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Roach,
You could be on to something. Do you have Toyo's as OEM tires? If so, what does your door jamb placard say for tire pressures? 33PSI?

I have the Goodyear LS1's as OEM. I'll check my tp ratings and see if they are the same. If so, then the tire pressure ratings may be based on the vehicle dimensions/weights/etc rather than the tire type/make/design...interesting.

I'll get back to ya.

_____________________________

2007 XLS AWD
Diamond White Pearl w/Beige Leather
Luxury Pkg - Nav Pkg - Sun/Sound Pkg
OEM 18" 7-Spoke Wheels
Curt Hitch/OEM Harness

(in reply to roach)

Post #: 3

RE: Tire Inflation Question - 4/28/2008 7:35:05 AM

roach

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Joined: 8/14/2007
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I don't have the Toyo I was thinking about getting a set I have the OEM goodyear LS2 and your supposed to use 32psi by spec in the door jam.

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RE: Tire Inflation Question - 4/28/2008 7:49:28 AM

Cuffy

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Joined: 1/27/2008
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Oops my bad, mine are LS2's also. Anyone else have an XLS with another brand OEM tire on their 18" wheels?

I know that different tires are spec'd for the same make of vehicle depending on where it's built (state/region). Sometimes even the vehicle year will vary for OEM brand used. I'll have to hit a dealer lot and look for the same vehicles with different OEM tires and check the door jamb info.

_____________________________

2007 XLS AWD
Diamond White Pearl w/Beige Leather
Luxury Pkg - Nav Pkg - Sun/Sound Pkg
OEM 18" 7-Spoke Wheels
Curt Hitch/OEM Harness

(in reply to roach)

Post #: 5

RE: Tire Inflation Question - 4/28/2008 10:46:54 AM

chenarm

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Joined: 11/21/2007
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I don't think that you'll find any difference between the recommended tire pressure on vehicles with different brand tires. Although different brand have different characteristics, a change in temperature or road condition probably have a larger impact on the pressure you should use.

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Marc

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RE: Tire Inflation Question - 4/28/2008 11:13:23 AM

evoracer

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Joined: 5/16/2007
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Remeber the pressure on the tire sidewall is a MAX inflation pressure. I personally like mine at 35 psi. Getting better wear, better milage and less noise than at the factory spec.

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Jeremy
Mitsubishi Master Tech

(in reply to chenarm)

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RE: Tire Inflation Question - 4/28/2008 11:15:42 AM

Cuffy

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Joined: 1/27/2008
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chenarm,
Good points. The change in road surfaces around here probably makes the tire pressure rise and drop all over the place. Concrete to asphault, smooth blacktop to brick, dirt to gravel. Plus speed's a big factor as well. I guess it's all relative and i should pay more attention to tire wear, rather than pressure.

_____________________________

2007 XLS AWD
Diamond White Pearl w/Beige Leather
Luxury Pkg - Nav Pkg - Sun/Sound Pkg
OEM 18" 7-Spoke Wheels
Curt Hitch/OEM Harness

(in reply to chenarm)

Post #: 8

RE: Tire Inflation Question - 4/29/2008 12:27:52 PM

Kwanger

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Joined: 11/8/2007
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quote:

ORIGINAL: chenarm

I don't think that you'll find any difference between the recommended tire pressure on vehicles with different brand tires. Although different brand have different characteristics, a change in temperature or road condition probably have a larger impact on the pressure you should use.

Yep tire manufacturers have to work to standards, and there isn't enough significant difference between one brand and another where you would have to vary pressure from the manufacturers OEM settings.

Like chenarm says, way too many other variables affect pressure more, especially ambient temperature. For instance, down here in FL, when we've had a sudden rare cold snap come through, I've even had the low pressure light come on.

(in reply to chenarm)

Post #: 9

RE: Tire Inflation Question - 4/29/2008 3:40:55 PM

Manybrews

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Joined: 5/23/2003
From: United States
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tire pressure on the tire is a MAX pressure.
the pressure recommended on the door jam is the pressure the engineers of the car dertermined to be the best for overall wear, traction, comfort, etc.

use the door jam pressure.

(in reply to Kwanger)

Post #: 10