Recent Topics
Weber gas grills & Weber 10 yr warranty
by Donald
Today at 05:50 PM
2008 Honda Odyssey oil and filter?
by CARJ
Today at 05:11 PM
Bugatti Veyron $21k oil change???
by wemay
Today at 05:07 PM
Nexen N Priz AH8 vs Hankook Ventus V2 Concept
by ET16
Today at 04:48 PM
1999 LeSabre to 2008 Lucerne
by Duffyjr
Today at 04:26 PM
Engine Oil "catch cans"
by TnMike46
Today at 04:17 PM
2018 Audi S4 4.5k mi Factory Fill
by Vigg
Today at 03:46 PM
RAGBRAI 2018
by DriveHard
Today at 03:23 PM
Bat houses?
by PW01
Today at 01:55 PM
Hub Centering Rings
by Char Baby
Today at 12:48 PM
Bad Discount Tire experience
by dwgwater
Today at 12:08 PM
2007 Accord coupe V6
by aquariuscsm
Today at 11:49 AM
Mystery Oil
by Zee09
Today at 10:52 AM
Mobil 1 EP good enough for non-aggressive drivers?
by Jasper8146
Today at 10:49 AM
2011 Durango 5.7L 125K PPHM 0W20 3K W/ Towing
by Mathew_Boss
Today at 10:27 AM
Eric The Car Guy's Mobil 1 AP Test
by camrydriver111
Today at 10:19 AM
Alignment: loading suspension in sloped driveway
by zorobabel
Today at 10:14 AM
Very Impressed with Fram Qualityc- CH10160
by rooflessVW
Today at 09:49 AM
Costco Canada Bridgestone Sale
by IndyIan
Today at 09:33 AM
Buying oil overseas, shipping to the US?
by d00df00d
Today at 09:23 AM
Newest Members
RYCOJO, Gunplt, bjay, javylsu, Jlb27537
65503 Registered Users
Who's Online
89 registered (A310, Aero540T, 300m2000, 2015_PSD, 15 invisible), 1549 Guests and 38 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65503 Members
67 Forums
287286 Topics
4792679 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#4632675 - 01/12/18 04:49 PM What tire pressure to run?
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
Feels like I've been posting a lot in this section lately... oh well, I'll try to stop eventually. smile

Walmart put 35PSI in my new tires (245/75/16 Hankook Dynapro ATMs, P rated). Does that sound about right for my Liberty? Weight wise I'm guessing it's probably around 4600-4800 lbs once you add in the winch, skid plates and rock rails. Door sticker is irrelevant at this point, I think, not a factory size. I'd do the chalk test but I'd have better luck playing pickup sticks with my butt cheeks than finding a dry section of pavement here for awhile. smile
_________________________
15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)

Top
#4632693 - 01/12/18 05:02 PM Re: What tire pressure to run? [Re: HoosierJeeper]
StevieBoy Offline


Registered: 08/06/12
Posts: 168
Loc: Central Florida
My G.C. recommends 33/36 psi front/rear in 265/50R20's. Never heard of such a thing! What is the point of a 3 psi difference between front & rear?
_________________________
2018 Grand Cherokee Limited
25th Anniversary Sterling Edition

Top
#4632713 - 01/12/18 05:22 PM Re: What tire pressure to run? [Re: HoosierJeeper]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
My LR3 specs 33 in the front and 42 in the back!
_________________________
15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)

Top
#4632730 - 01/12/18 05:35 PM Re: What tire pressure to run? [Re: HoosierJeeper]
Jimzz Offline


Registered: 10/03/14
Posts: 1170
Loc: NoVA
I do about 35 in the front and 33 in the rear.
_________________________
yup

Top
#4632785 - 01/12/18 06:26 PM Re: What tire pressure to run? [Re: HoosierJeeper]
Alex_V Offline


Registered: 04/10/16
Posts: 1174
Loc: Campbellsville, KY
What is sidewall max PSI?

I'd probably run the fronts 4-6 PSI higher than the rears. The rears, primarily transmitting power to the ground, will have a tendency to wear in the center, where the fronts will tend to wear on the sides from doing the steering. The fronts also carry a bit more weight.
_________________________
I like Chevy and Valvoline.

'13 Cruze, 1.4T, 113K
'85 GMC C3500, 454, 130K
'82 Mercedes 300CD, OM617 turbo, 169K
'67 Suburban, 350, 331K

Top
#4632813 - 01/12/18 06:42 PM Re: What tire pressure to run? [Re: HoosierJeeper]
das_peikko Offline


Registered: 01/01/18
Posts: 534
Loc: San Antonio, TX
35PSI is the standard that most tire shops go by.

Top
#4632825 - 01/12/18 06:53 PM Re: What tire pressure to run? [Re: HoosierJeeper]
Nick1994 Offline


Registered: 02/19/13
Posts: 10289
Loc: Phoenix, AZ
The door sticker isnít for the dry stock weight of the vehicle, itís for the max loaded point of the vehicle too.

But I usually add a couple PSI. 36 psi in the Jeep and Sonata.
_________________________
2015 Hyundai Sonata 2.4L 80k Mobil 1 AFE 0w30 & OEM
2000 Toyota Camry 2.2L 228k Mobil 1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 146k Mobil 1 HM 10w40 & Fram Ultra

Top
#4632841 - 01/12/18 07:07 PM Re: What tire pressure to run? [Re: das_peikko]
Aero540T Online   content


Registered: 01/08/18
Posts: 25
Loc: MI
Originally Posted By: das_peikko
35PSI is the standard that most tire shops go by.


Interesting. I worked at a tire shop for a little bit and we went by the door sticker as it varied by type of vehicle. As a general rule at least
_________________________
2004 Jeep Grand Cherokee Limited 4.7L (wifeís) M1HM & PL
2002 Ford Taurus 24V M1HM & M1EP
2001 Dodge Ram 1500 5.9L 4x4 M1HM & M1EP
1993 Yamaha FZR 600

Top
#4632868 - 01/12/18 07:31 PM Re: What tire pressure to run? [Re: HoosierJeeper]
Linctex Offline


Registered: 12/31/16
Posts: 6186
Loc: Waco, TX
I wish a published list were available of tire psi BY POUNDS OF LOAD each tire carries!

My F150 is very front heavy, so gets more PSI in front tires, than in back.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

Top
#4632870 - 01/12/18 07:32 PM Re: What tire pressure to run? [Re: Aero540T]
Linctex Offline


Registered: 12/31/16
Posts: 6186
Loc: Waco, TX
Originally Posted By: Aero540T
I worked at a tire shop for a little bit and we went by the door sticker


I have never ever seen a tire shop guy look at the door sticker.

35 psi is VERY common
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

Top
#4632934 - 01/12/18 08:14 PM Re: What tire pressure to run? [Re: HoosierJeeper]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
I want to say max is 44. It's 0 degrees out so that's my best guess.

I would run different pressures front/rear but the tcase would pitch a fit, they have to be within a pound or two of each other for it to shift in/out of 4WD smoothly.
_________________________
15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)

Top
#4632938 - 01/12/18 08:16 PM Re: What tire pressure to run? [Re: Linctex]
Aero540T Online   content


Registered: 01/08/18
Posts: 25
Loc: MI
Originally Posted By: Linctex
Originally Posted By: Aero540T
I worked at a tire shop for a little bit and we went by the door sticker


I have never ever seen a tire shop guy look at the door sticker.

35 psi is VERY common


I donít disagree. And it wasnít every vehicle as you start to figure it out. Most passenger cars were 32 if I remember correctly.
_________________________
2004 Jeep Grand Cherokee Limited 4.7L (wifeís) M1HM & PL
2002 Ford Taurus 24V M1HM & M1EP
2001 Dodge Ram 1500 5.9L 4x4 M1HM & M1EP
1993 Yamaha FZR 600

Top
#4632946 - 01/12/18 08:19 PM Re: What tire pressure to run? [Re: HoosierJeeper]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 2889
Loc: Wet side WA
My Hankook tires are rated at 51 PSI my car calls for 34 PSI. I run them at 40 PSI. Better MPG more than 0W-20 ever gave me. About a mile per gallon in town and a 2+ MPG increase on the open road.
_________________________
2004 Corolla 122510
Out: QSUD 5W-30 Purolator One 5030
In: VML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74202
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 74705 4-22-18

Top
#4632989 - 01/12/18 08:51 PM Re: What tire pressure to run? [Re: das_peikko]
Dumc87 Offline


Registered: 06/05/10
Posts: 591
Loc: Florida
Originally Posted By: das_peikko
35PSI is the standard that most tire shops go by.


This.

When I first started airing up tires, I went by the door sticker. In a busy shop environment, you'd be surprised at how time consuming that can be. Some cars don't even have the sticker, or the numbers are illegible. For a myriad of nuance reasons, 35 PSI is a standard.

Now, some cars, like Corolla's, I can remember being around 32/33 PSI front and rear. If I notice I'm working on one of those, I'll put in 33 PSI. But I also realize that so many tires I work with, are being driven by a person who doesn't make it a habit of checking the air. So I end up putting 35 PSI in anyway, knowing it's better for the vehicle to be a tad over recommended PSI than being under; especially when MPG's are more important than handling, for most.


Edited by Dumc87 (01/12/18 08:55 PM)
_________________________
'90 Z32 - PP HM 10w30
'98 ZJ - PYB HM 10w40
'02 G20 - QS UD 5w30
'09 Matrix - QS UD 0w20

Top
#4632996 - 01/12/18 08:57 PM Re: What tire pressure to run? [Re: JohnnyJohnson]
Dumc87 Offline


Registered: 06/05/10
Posts: 591
Loc: Florida
Originally Posted By: JohnnyJohnson
My Hankook tires are rated at 51 PSI my car calls for 34 PSI. I run them at 40 PSI. Better MPG more than 0W-20 ever gave me. About a mile per gallon in town and a 2+ MPG increase on the open road.


When I do tire pressure checks, I sometimes ask what a person wants to run in their tires for this very reason. 40 PSI is pretty high for a Corolla, but if that's your preference and you've seen a good reason to do so, then 40 PSI it is.
_________________________
'90 Z32 - PP HM 10w30
'98 ZJ - PYB HM 10w40
'02 G20 - QS UD 5w30
'09 Matrix - QS UD 0w20

Top
Page 1 of 2 1 2 >