50psi ok on stock wheels?

Yesterday I noticed for the first time that the Bridgestone duelers that came on my truck are E rated. I wanted firm up the ride and see how they felt. They were ~30-32 lbs before and I put 50psi as a starting point to finding a happy medium. Looking for maximum life out of these. Almost brand new at this point.

Got on the highway, pulled off to side to pull flapping fender strip and then merged vigorously back into traffic. TPMS light started flashing and stays flashing. Pulled off again in a safe spot and looked at tires and wheels. Everything looks and feels ok.

Ideas as to why TPMS went off?
Aired up about 20 miles ago, so I figured it just registered the change. Gonna keep driving and see how it feels.

 

the proper psi has nothing to do with what the tire can handle - the weight of the vehicle vs the psi is the equalizer in the equation. if you have 50 psi in your tires they are going to be domed and wear down the middle badly. the tpms is triggering because you are out of range.

 

50 psi is over kill imo.

 

Uhhhh my e rated 315s we’re happy with 25-30psi for tread wear.

 

I’ve always ran E-rated KO’s and now KO2’s on all my Toyotas (see my list) and used to use 50psi at first, but 40-45psi is better for highway and daily commutes, results in even tire wear and wont set off the warning lights. It is easier on the truck, too as your suspension, steering rack and joints will be vibrated less. I do air down to 30 or less offroad too, depending on where I am - like right now.

 

Experimenting with tire pressures like this is best left to the tire manufacturer, who knows what air pressure is best for your tire. As previously mentioned, all you will do is wear down the middle faster, not to mention your air pressure is most likely so out of the recommended maximum psi that the chance of a blow out is greater.

Why do people insist on screwing with things they don't understand so much?

There is a state law which requires that every vehicle that rolls through an automotive shop in California needs to have it's air pressure checked and set to the proper door jamb psi. I get incredibly pissed when I have to sit there on every other car with larger tires for 5 minutes per tire because the customer or some moron at another shop set the tire pressure this high and I have to bring it back down to 32-35 psi. Usually the tire tread is damaged by that point though so I question what the point is in doing all this.

 

Why do people insist on screwing with things they don't understand so much?

Hmm, well how do you come to understand it if you don’t mess with it?

I have certainly read about it here and there are a lot of people with conflicting ideas and information. You will find a lot of people claiming to run 50 plus psi on our trucks with e range tires. Not to say that makes it right, and perhaps they have a lot more weight than my nearly stock truck- just addressing the point that it takes some thoughtful trial and error to gain an understanding. I didn’t buy these tires and decide to run them- previous owner put them on and I am figuring out how they work.

I know enough about tires to know that my truck won’t fall apart if I drive 10miles with overinflated tires. I aired down to 40 and will see how that treats me. Probably chalk test when I get home.

 

Does anyone know a published aceptable range associated with our TPMS sensors?

What would be the actual/ theoretical safe psi limits of our stock wheels? I have the 2005+ alloy 16in wheels that came with the OR.

 

Your door jamb sticker.

 

Chalk test is a good test, but it only tells you half the story. It does not take into account for when the tires are under a dynamic load.

Messing with it is how you learn, yes, but topics like these have been covered ad nauseum on the internet at this juncture and you can find more information regarding the subject matter than you can ever hope to read through. People have already done the hard work and spent the money on the mistakes for you is what I mean.

 

fair enough- I am committed to the trial and error method. Hopefully not so much that I break anything, but so goes the process

 

I inflate my tires to 35PSI.

50 seems high. Will probably wear down the centre of the tread more so than the rest of the tire tread.

 

Next time I change oil on my 4.0L Tacoma, I'm going to refill with 9 qts. instead of the factory-stated 5.5 qts. More is always better.

 

Yeah, that’s definitely the same thing.

 

When I ran BFG KO's I was at 32-35 psi most of the time. I would imagine that driving @ 50psi would feel like driving on stone. Look up the chalk test and give it a try and you'll see how the tires are going to wear.

 

To give an example of why I have questions:

My dad drives a stock Honda Ridgeline and tows and hauls stuff for his handyman and recycling business. Regularly carries around 1000lbs or more of stuff, driving around town, on the highway mostly. Regularly tows a trailer that probably exceeds manufacturer rated weight. He has a set of d range K02 tires that have a max psi of 65. Door jamb says he should run them at 32/ 30 respectively. He runs a them at the pressure that the manufacturer recommended- the bfg rep met him at the Ford dealer where he bought them special order (a buddy of his owns the dealer). Rep said he should run them at 60 when he tows and reduce psi as they wear and air down to 40ish if he ends up doing a lot of around town with less weight. My dad took him to mean that airing down would increase ride comfort when there was less weight. He has been doing this for over 50k and loves the ride and performance for his needs when compared with stock tires and tire recommendations per published numbers.

There is a lot of gray area Inbetween the door jamb numbers state and what happens with weight, towing, mpg, wear, etc. You folks who subscribe to the “that bolt had better be oem and meet the torque spec even though it’s only holding the bracket on” approach- my questions are probably not for you.

 

I stick @ 30-32, but mine are C load (265/75/16)

 

Yes, it is. You ruin components either way. You engine is fucked with too much oil, and your tires are fucked with too much air. You'll have minimal traction, you'll wear out the middles in no time, and then you'll have bare tires, get in a crash, and hurt someone because of your neglect.
Your door jamb is the best bet for proper tire pressures. A little more, or a little less won't hurt you but 18 psi extra is far too much and clearly an uneducated decision.
Edit: the pressure stated on the side of a tire is not the recommended air pressure, that's MAX it can hold without blowing a bead. A 2400kg truck does not need 60 psi.

 

Door jamb numbers are for stock tires delivered from the manufacturer. Change the tires and then those numbers don't apply generally. The pressure on the side of the tire is the limit, not what to run at.

I can somewhat agree if one is running a real heavy weight, going up in pressure is probably a good thing, tires will heat up less than under filling them do to rolling resistance being less.