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What psi should i run?

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Old 05-14-2013, 10:14 AM   #101
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100k tire wear

How did u get 100k miles out of 1 set of tires?
That would be a good thread ( how many miles do u get with your tires) to start


Quote:
Originally Posted by glk21c View Post
running 45-46 psi all the way around on my 265/65/17 Yokohama Geolanders HT/S G-051's. About 90,000 miles on them now, will be changing them at about 100,000. Rotated every 6000 miles, all highway. No uneven wear patterns at all, highway MPG has always been a consistant 21-22.
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Old 06-26-2013, 01:56 AM   #102
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Chalk test is not an accurate test... Too many variables...
Did you know..Tires actually increase in diameter as speeds increase! This will give a false chalk line reading!
Don't do the chalk and make a bunch of turns...chalk wont give accurate reading because of inside/outside excess wear from turns...
Tire temp affects air pressure~

You can do this:
Are you an 'around town' driver? ok, do the chalk and drive around town!
Are you a freeway flyer? ok, do the chalk and drive the freeway!
Stick to as straight a section of road as possible.
This way you will get a more accurate reading for your driving style.
my .02 worth
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Old 06-26-2013, 03:00 AM   #103
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Quote:
Originally Posted by nwb3160 View Post
i deflated to 46 and will probably drop to 42 later. is there no tool i could buy to do the same thing as a chalk test?
Load Inflation Table.
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Old 07-15-2013, 04:37 PM   #104
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TIRE PRESURE

Hello Guys,reading your stuff here.Need some help,not doing the chalk thing,this is my thought,correct me if I am wrong.My Truck had OE 215/70/15. On door PSI FRONT 30 REAR 33. Now I have 245/55/19 from a Highlander Limited reading on door FRONT 30 REAR 30 My wife 2012 Highlander has the same on door. I put on tires 32PSI due to the fact that the Toyota Dealer that install the wheels and tires said they would use 38,when checked it had 36,it could have been a bad reading, Anyway what I am trying to get is that 36-38PSI is to much and with 32PSI feel it runs much nicer,no bumpy or ruff ride. Let me know what you think,been playing around with manual on Tacoma due to the different sizes of wheel that is comes with and I think it sounds ok what I am doing. Have a 2012 TOYOTA TACOMA 4CILINDER DOUBLE CAB,again it came with 215/70/15 and now it has 245/55/19,got them at a local Toyota dealer and they looked to good. Checked everything to make sure they would fit and they look awesome,what a change.Found out here that these wheels would fit,so far no complain,the other thing is speedometer off,Toyota local dealer that install says that on my truck they have no way to calibrate,so I have back off of that.Like always thanks for help,let me see if I can put a picture of truck,still learning how use site,lol.
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Old 07-23-2013, 12:05 AM   #105
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I GOT 275/65/18 GOOD YEAR DURATRAC DOUBLE CAP 4X4 TACOMA WHATS NORMAL TIRE PSI ? ANYONE PLS ?
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Old 07-24-2013, 06:53 PM   #106
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Hello SodoScott,I have on a 2012 TOYOTA TACOMA OWNER'S MANUAL, this information not sure if will help you but I will try. P255/45R18 99V showing FRONT TIRES 35 psi REAR TIRES 35 psi wheel size 18x8JJ, P265/60R18 109H FRONT 29 psi REAR 29 psi Wheel size 18x7 1/2 J Not sure if this helps you.Also have a 2012 TOYOTA HIGHLANDER OWNER'S MANUAL I have P245/55/19 19x7 1/2J wheels and tires and I figure out around 32psi on front and rear. Manual says FRONT 30psi REAR 30psi also same psi on P245/65R17 105S My wife has this size on her Highlander. I installed at the dealer the 19" Highlander wheels and tires,Toyota Dealer said 38psi is good and when I checked it had like 36psi.Truck felt to hard on road and bumpy. Now it feels ok even though it is a 4 cylinder,it has 32psi. Take care. This is my truck.
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Old 07-25-2013, 09:13 AM   #107
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Just .02 more cents, I have stock tires which i think are 265/60r17. The door says 29 front and 29 rear. They look like they are going flat. I bumped it up to 34 PSI all around. I like the ride alot better. It feels like it should.


Anyway just my .02 cents worth.
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Old 09-20-2013, 08:57 PM   #108
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4 PSI Rule

1) Check cold air pressure to start. Use the recommended psi on the sticker in your truck.
2) Go for a drive for at least an hour so the tires warm up. Min 30 min..
3) Check the air pressures. If your starting cold psi was 35 its should now be 39psi. No more! (The psi increases because the tire heats up)
If the psi goes more than 4psi you need to add air to the tire. A low tire will get too hot and blowout.
Air temps, speed, and loads all have an impact on tire pressure.

This method works on any tire or road condition. From rock crawling to sand dunes, or high speed you can set your pressures with this method.
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Old 09-20-2013, 09:01 PM   #109
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4 PSI Rule Link

Here is more information than you may want to read all about the 4 PSI Rule.
http://www.aawen4x4.com.au/index.php...&id=1&Itemid=7
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Old 11-11-2013, 10:42 PM   #110
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Quote:
Originally Posted by RudedogII View Post
1) Check cold air pressure to start. Use the recommended psi on the sticker in your truck.
2) Go for a drive for at least an hour so the tires warm up. Min 30 min..
3) Check the air pressures. If your starting cold psi was 35 its should now be 39psi. No more! (The psi increases because the tire heats up)
If the psi goes more than 4psi you need to add air to the tire. A low tire will get too hot and blowout.
Air temps, speed, and loads all have an impact on tire pressure.

This method works on any tire or road condition. From rock crawling to sand dunes, or high speed you can set your pressures with this method.
Thank you for this information. I was wondering why my tire PSI went up after driving. I always felt like the recommended PSI on the driver's door was too low because they look flat.
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Old 11-29-2013, 01:41 PM   #111
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I don't know if anyone has seen this, but I thought it was pretty cool. Basically you take a chart to find what pressure you should be running per what load you are carrying and per your tire size. Here is the article http://www.offroadadventures.com/articles/view/id/509 and I thought this thing was cool as well http://tyresaver.parkertyresaver.com...tion-range.php and here are some charts http://toyotires.com/tires-101/load-...flation-tables http://www.michelintruck.com/micheli...ion-tables.jsp http://www.tiresafety.com/images/Tir...t%20Manual.pdf http://www.barrystiretech.com/loadtables.html Hope this helps anyone confused about what pressure they need to be running in the tires.
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Old 12-19-2013, 04:32 PM   #112
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Got a 06 tacoma. Running Yokohama Geolandar A/T-S 275/70R16. Looking for tire pressure front and back. Running 35 up front and 33 in the rear.
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Old 12-21-2013, 01:35 PM   #113
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Thanks. On my way to adjust tires now.
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Old 02-05-2014, 04:36 PM   #114
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Anyone running Michelin Latitude Tours....(summer tires)... I have a mounted set waiting for spring to go on the truck.... any idea what I should do for pressure?

Or is the chalk test the way to go...??
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Old 04-23-2014, 10:17 PM   #116
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Idk if this was stated or not. But the method I use (since I live on a dirt road and dirt yard, and don't have a street close by to use the chalk method) I LIGHTLY spray the dirt down with a hose, then drive through it slowly after it soaks in a little, until I hit dry dirt and drive a rotation or two, and see how much sand or dirt sticks on. If it's too high or low you'll get a general idea. Beforehand I adjust it by eye to see how flat the tread is. Ideally that's all you're looking to do.
Also on a side note, if you ever get your tires serviced at any shop, be sure to adjust your pressure before leaving because every single time they air them up too high. I think it's kinda funny they don't know that larger aftermarket tires require different pressure than what stock says.
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Old 04-23-2014, 10:29 PM   #117
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Oh another thing, for those of you that might not know, tire pressure changes with temperature dramatically. Especially for me in Az... But make sure you drive a distance before you adjust your pressure so they get up to the proper temp for normal driving. Or, get yourself a tpms kit like i did and you can adjust it on the fly. You'll never regret it. Ordered mine on Amazon and had my local big o install it. Orange Electronics was the one I got. Think the one on Amazon now is a newer version than what I have. But whatever you get is cheaper than what the shops charge for sure. But yeah it's sweet. Shows tire temps and everything.
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Old 04-27-2014, 06:38 AM   #118
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I am running Mickey Thompson 285/75/R16 Baja ATZ Front tire pressure is 35 rear is 32 still noticing outside tread of rear tires not getting cleaned off. how low can I go on rear tire pressure without causing slipping?
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Old 04-28-2014, 01:14 PM   #119
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I have 32 11.5 15, I run 30 up front and 28 in back (cold). So at night when it's cool it doesn't change a whole lot. It goes up a degree or two. So I end up running at about 31 up front and 29 in the back. At night the temps are affected too much. During the day is when I see a more dramatic increase. The fronts go up to 33 and the back about 30 maybe 31. But it changes so often that I was fighting to keep a steady pressure. But I think I found a happy medium. Which was the 30 front and 28 rear. 28 in the back seems low but if you think about it, there's like no weight in the back with our tacomas.
Now with summer upon us I'm gonna have to start adjusting lower for higher temps. I think last summer I was running 26 in the back and 29 up front. Which gave me about the same numbers after warm up to 28 in rear and 32 up front. So really it takes a lot of experimenting to find that perfect psi. But it never really is perfect.
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