Let's talk tires

What does this have to do with tires at all?

 

Come on, seriously, what happens to that LT tire with specs of 44 Psi on the 4R and you put 32 Psi in it. Explain to me what does that do?

 

I give you an extreme on structural differences and behavior. That is what this means.

 

I don't know.

What I do know is that it won't handle the GVWR of the 4runner safely according to some engineer somewhere.

That's all I want to figure out.

I already know that the load range is different. I already know that it's built differently. I am curious about the actual physical reason that it needs more air to do the same job safely.

 

An under-inflated tire will “flex” more when cornering and stopping. Under-inflated tires don't respond as quickly as they would if they were properly inflated, so you lose some of the performance and safety benefits built into the tire by the manufacturer.

 

I know. Why are you trying to explain such basic stuff to me?

I'll find some articles to explain exactly why LT tires require higher inflation.

I was never asking you. I want someone who knows the science involved to explain. Or, I'll find out for myself.

 

@Roland sometimes I wonder if you're just trolling me.

 

I don't troll people, never do. I just don't understand why you refuse to see the point, I consider you as a smart guy.

 

What point?

I just want to understand the actual reasoning behind the increase in tire pressure from SL to LT.

Saying that they're different doesn't explain that. Nothing you have said does.

And then you show me this crap about under-inflated tires. I know about under-inflated tires.

I'm trying to understand why an LT265/70/17 is under-inflated at the proper pressure for a P265/70/17.

And, again, I know that they're built differently. That's not the explanation I'm looking for.

 

I already mentioned it, structural differences or misprint. You don't believe it, that's ok for me. Keep looking for Gremlins. Btw. They don't exist.

I bow out , you win the debate.

Don't take things personal or get your knickers in a twist, nothing was meant to be offensive. Friends.

 

Misprint? LT tires consistently require more air pressure than SL in any scenario. That's not a misprint. That's a fact.

There's nothing useful anywhere so far.

From Tiresize.com:

"Also despite what many might think, Passenger rated tires can actually have higher load carrying capacities at the same pressure as the LT version in the same tire size. The LT tire will generally have a higher maximum load capacity, but it takes a higher pressure to achieve the same load capacity."

No further explanation. I feel like I need to talk to a tire engineer to get an answer.

I know you're trying to be helpful. I just don't think you understand what I'm trying to figure out.

I'll go un-twist my knickers now.

 

I don't understand, that you debate on a subject that you don't understand yourself, waving my point in structural differences. Btw. Besides asking a tire engineer ask a Physicist about my equation, just saying..

 

Before we go around this again. Let me try to rephrase.

I understand that there are structural differences, as I've said. I want to understand why that means that an LT tire requires higher pressure. Or better yet, what is the reasoning for the exact difference.

I want to know what the actual reason is that we need to add 12 extra PSI to a stock size LT tire.

"Structural differences" is not an answer. A math problem was not an answer. Unless you can explain to me the exact science that causes the exact same size tire to require ~35% more air pressure to carry the exact same load on the exact same vehicle then you are wasting your time attempting to answer.

I'm sure your equation is fine. But it does not explain the variable that causes the math to change when switching from an SL Tire to an LT Tire.

 

By the way, I haven't debated anything. I said that I would like to understand it. I never asked anyone here to try to explain it to me. And, so far, nobody has.

 

Alright, back to the ford vs chevy debate.

I now have 2 2022 ORP with TRD wheels, one running KO2's and one Ridge Grapplers. I was really bummed that I could not get RG's for both, but after the install the KO2's do look good. Maybe not as full as the RG's.

I will say that both ride way better than the stock Dunlaps and Bridestones. Driving the second one home on the bridgestones Weds was torture, one was bad out of balance.

 

I have heard mostly very good reviews of the Ridge Grapplers. I don't think you could go wrong with either one.

KO2's get a lot of bad press on these forums. I still believe that's it's a very good all around tire. It seems that the rest of the market has stepped up, though. So, hopefully BFG is working on making the next generation even better.