Penumbra
Active Member
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Looks like Bilstein is now making 5100s for the 15-19s!!
- Thread starter Black
- Start date
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Ok well you tow also which is why you run higher pressures. When I call nitto and tell them exactly what I use the truck for and they recommend 45psi, I’m going to listen to the manufacturer. They also stated anytime I tow to bump to the max, but to come down for normal city and highway driving.
At max tire pressure, less of the tire is touching the surface creating bounce. More bounce = less handling ability especially at highway speeds.
Handling is going to suffer, ride comfort will definitely suffer, and you’re risking a blowout since the “max 80psi” is a WARNING to not exceed this number. With your “war zone” trips across the country highway speeds are heating up the air in the tires so your already over that max number. You are actually more of a hazard than joe smith running the RECOMMENDED 35-40psi.
The recommended pressure is the pressure where the vehicle handles and performs the best.
Iamsam1117
Well-Known Member
Agreed, max pressure isn't the proper pressure for our tires. Toyo has a conversion chart for P to LT tires I ended up bumping the pressure on mine to 45 and been running great
Scratching head. You should do the chalk test to verify your hypothesis, and if you are right, reach out to Ford and the tire manufacturers to show them the error in their recommendations..
My experience has been that the tires maximum load capacity is at maximum pressure. In the case of the specs you have posted, that would mean four of them support 14,600 lbs at 80 psi. I'm glad you've had good luck running your tires at max pressure, but I don't really think it is recommended, and I doubt you'd find a tire manufacturer that would recommend it on a truck that weighs less than half the rated tire capacity at max pressures.
Running them at maximum pressures just seems to unnecessarily decreasing ride comfort, increasing shock to the wheel, suspension chassis and occupants. It also increase the risk of damage to the tire carcass as a result. Tires are supposed to flex.
Penumbra
Active Member
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Penumbra
Active Member
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MuddySpokes
Full Access Members
Geeze . . .
Why is it that on forums I watch, whenever somebody shares an experience on tire psi, people feel a need to jump on each other to prove who is right?
I find it hilarious that people will go into flame mode about tire pressure, yet get bigger tires than what OE calls for. Or install HID's when the lens is for filament. The list of OE deviations can get long . . . But tire psi? Noooo . . . Full-on war.
Why is it that on forums I watch, whenever somebody shares an experience on tire psi, people feel a need to jump on each other to prove who is right?
I find it hilarious that people will go into flame mode about tire pressure, yet get bigger tires than what OE calls for. Or install HID's when the lens is for filament. The list of OE deviations can get long . . . But tire psi? Noooo . . . Full-on war.
Jesus what a nerd, you can tell your tire pressure within 2-3 psi, yeah ok. Sounds like you’re full of yourself! If you’re at 80psi and on the highway for more than 50 miles I guarantee you’re running those tires over 80, but hey, you do you, keep your fingers crossed you dont have a blowout one day and injure yourself or god forbid someone else. I’ll be on the lookout for you during my travels and be sure to drive the other way
The Vehicle Manufacturer and Tire Manufactures make recommendations based on testing and empirical data. I'm pretty sure their engineers aren't using seat of the pants impressions to make them, but apparently your more finely tuned than their testing equipment and methodologies.
It is really not worth getting into ******* matches like this (Not to mention this has gone way off the OP's topic), but to state YOUR preferences as fact, can be misleading, and everyone should know that they are just that, YOUR preferences.
If anyone wants to know what conclusions the Tire Manufacturer came to (after spending 10's, maybe 100's of thousands on testing) for optimal performance/economy and wear consult their recommendations, not the Internet Jockey that yells the loudest..
https://www.toyotires.com/media/2125/application_of_load_inflation_tables_20170203.pdf
Anyone reading along for their own education, keep in mind when changing tire sizes and construction (P vs P-Metric, vs LT, etc), you will need to adjust Air Pressures from what is stated by the factory, but there are conversion tables to do this, and I've yet to see any that recommend MAX PSI, unless the load carried warrants it..
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