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What psi should i run?

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Old 08-03-2014, 05:49 PM   #121
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Adding to above:
If your tires and rim width are not matched up correctly, neither the calk method nor the math method will likely give you correct PSI readings.
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Old 09-13-2014, 02:53 PM   #122
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What Im gathering here from reading all the info (which is absolutely effing awesome) is that if I have a stock 14 DBL Cab with the BFG's that toyota installs should be 29/32 according to the door. I checked mine today with 600 miles on the truck and i was at about 40 all around on a relatively cold tire. Do you guys recommend going to the 29/32 pressures, driving around and adjusting from there? I do about 50/50 between highway and city...

Thanks for the help!
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Old 09-14-2014, 03:50 AM   #123
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40 is way too high. Especially if it was cold, with heat from the friction and from daytime your pressures gonna be even higher than that. Take em down right away. From what I hear (I forget why) but dealers tend to keep their tires up a bit higher than normal for the cars on the lot. But if they installed newer tires since you bought the truck, kinda odd they would put them that high. Max pressure is probably 35 on those! I just fail to understand why people do this at tire shops and have no clue about proper tire pressures. Or fail to read the Damn tire to see what max is and make a judgement off that alone on pressure. Really surprised Toyota put them at 40! Wtf! That's why I ALWAYS check my tire pressure if I have any shop service my tires. And if it's ridiculously high I make it a point to go back in and explain what happened.
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Old 09-14-2014, 08:47 AM   #124
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Quote:
Originally Posted by toendanger View Post
40 is way too high. Especially if it was cold, with heat from the friction and from daytime your pressures gonna be even higher than that. Take em down right away. From what I hear (I forget why) but dealers tend to keep their tires up a bit higher than normal for the cars on the lot. But if they installed newer tires since you bought the truck, kinda odd they would put them that high. Max pressure is probably 35 on those! I just fail to understand why people do this at tire shops and have no clue about proper tire pressures. Or fail to read the Damn tire to see what max is and make a judgement off that alone on pressure. Really surprised Toyota put them at 40! Wtf! That's why I ALWAYS check my tire pressure if I have any shop service my tires. And if it's ridiculously high I make it a point to go back in and explain what happened.
Funny that your bring up the subject of tire pressure and dealerships....

Just last week the low tire pressure sensor in our Optima (in my sig pic below) came on. I keep a good eye on tire pressure in all of my vehicles (probably the most important factor to MPG and safety that 99% of drivers don't bother ever checking) so I know that they're all within 1-2psi of target pressure & each other unless there's an issue. The wife (also in the sig pic below) told me the light was on so I checked all the tires immediately and, as expected, 34.5-35psi all the way around. Evened them all to exactly 35psi resting temp at a moderate ambient air temp and then went to the spare. It was 52psi when the tire calls for 60psi so I was confident this was the problem and put the extra 8psi in it. The next day my wife drove to work and the light still hadn't gone off so she called the dealership to schedule a service appointment for a potentially bad sensor. The service manager (yes, manager) told her that tire pressure can vary greatly and she should just put 39psi in all of her tires and she'll be fine. 39psi. Mind you we live in Colorado and the day she called the high temp was an unseasonably cold 55 degrees. This means that if she fills them to 39 psi cold during a 55deg day her likelihood of a blowout at highway speeds when it's nearly 100deg increases dramatically. This is very dangerous advice they're volunteering to customers who call to schedule appointments to check a TPMS. I can't believe this is what the service manager of all people is telling people who call. Fortunately I know better but most who call would not. That very day the light reset itself when she left for lunch so fortunately we weren't forced to take the car into that dealership. Just a little side story to showcase how trustworthy a dealership should be when it comes to matters such as tire pressure.
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Old 09-18-2014, 11:02 AM   #125
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What would be recommended for what I'm running?

285/75/16 Hankook MT's
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