Tires wear uneven and fast

I have had many people i know check their tire pressure after driving for quite a while and then bring it up to the "cold" setting. Then they wonder why it looks low in the morning.
I tell them that if the cold pressure # is 30 to bring it up to around 34 when hot. When it cools down it will then be close to the 30 cold. And of course tell them to buy a pressure gauge..

The funniest thing I heard was from people who think that because they have nitrogen fills on their new tires they don't have to check their tire pressure because "nitrogen doesn't expand/contract' with temp changes. I remind them of the fact that normal air is 80% nitrogen already and nitrogen being a gas reacts according to the ideal gas law PV=nrt like any other gas.

 

The biggest perk to nitrogen is its a dry air, not like shop air. So it reduces corrosion and its a more stable gas.

That said I have access to it and don't use it.

But in the 00's michelins used to rot from shop air and a lot of rims would corrode from the inside out due to moisture in the shop air.

 

That has nothing to do with the nitrogen though. You could have perfectly dry ambient air with the normal 78% nitrogen content and solve that problem. Nitrogen in vehicle tires is just another way to rip-off ignorant consumers.

 

I'm saying its the only byproduct of nitrogen that I can appreciate, and no matter what shop air has moisture and contaminants. We have mega IR compressors with numerous dryers and in dry climate, still have moisture. Just not much.

It's a more stable gas and its actually used in racing so it's a byproduct of ignorance and gotta go fast in my sienna with extended warranty lol.

I think it should be free, but its BS to pay for it.

 

Unless you go back every time you need air to a station that has pure nitrogen available you dilute it every time you add air at your local gas station.

 

What we need is Helium filled tires, it would make our trucks lighter and give us better gas mileage. Imagine coasting off of a hill like a moon rover.

 

The only reason toyota cares about nitrogen is because their lawyers crunched the numbers and found that by "requiring" it they could reduce the chances of a tire blowout by 0.004 percent and thus reduce their financial/legal exposure (ie getting sued for a tire blowout) by 0.0039 percent

Whenever they have meetings there is 8 lawyers for every 2 engineers in the room

 

No argument that it’s more stable, we use it in aviation for some extremely critical systems other than just inflating our tires. I fully appreciate that it has a purpose, that purpose is just not truck tires in most cases.

 

I can't believe the nitrogen hype. What a load of crap.

 

They have done this for many years.
Although they appear exactly like mass market tires, OEM tires are often made of a custom softer compound to give a smoother, quieter ride at the expense of tire life.

Remember the old salesman saying "the feel of the wheel seals the deal", the manufacturers don't want people test driving to feel the tires are loud or harsh riding.

 

Makes sense - although my wife's new 2017 Forester got 44,000 on her OEM tires and there was tread left but I changed 'em out anyway.

Kinda happy about it really I would like a nice AT Tire ( Wildpeaks will be first choice ) but I couldn't justify it - but December will be
a month to remember LOL ...

 

Yep. Constantly letting air out after dealer service gets old though.

 

I can atest to that except the 2000's Michelin situation... i'm a bit too young and green to the trade for that... I thought Michelin's just dry rot if they were made on days that end in a "y"
Otherwise nitrogen in tires is largely a cash grab and can't see myself paying for it but my dealership (allegedly) had nitrogen ran straight to the tire inflators. I liked that my tire pressures stayed much more consistent between -40 and -10 but again I wouldn't recommend nor myself pay more than 5$ for nitrogen in my tires

 

Easy fix. Avoid dealer 'services'.

Sure, they are the best place to go sometimes. But generally that's pretty rare. No reason to stop by every time your ashtray is full.

Oh wait, are ashtrays a thing anymore?

And for all the nitrogen chatter, Costco provides it for free. I've never tasted it to see if it really is nitrogen, but sometimes it's ok to trust.

And for the non believers. The IR gun on my autox tires says it works better than shop air. Of course that does NOT make it worth paying for on your plebeian street car.

 

Yeah, I used to do all my own maintenance. Then I moved into an apartment complex that doesn't like you working on vehicles and also got this truck and an extended warranty. Now it's just easier to have the dealership do the basic maintenance with the added bonus of being one less reason for a warranty claim to be denied. But, that being said, I like to go by the "trust but verify" principle.

As for nitrogen, I had that on my last truck. For me it didn't seem to have enough benefit to be worth the trouble. But at the time I also wasn't considering how much it would expand/contract with temperature and was focused more on MPG. Either way, when I got a low tire, it was just easier to use regular air and take care of it right then an there.

 

Your tires are over inflated. Get an $8 tire gauge and bring them down to the PSI on the driver's door jamb sticker. They need way less air then most people think. At 6k pounds, my truck had even wear at 32 front/30 rear, but that is on load range C tires. Many shops fill tires to the max PSI on the sidewalk, which is way too much for Tacomas.

 

https://www.consumerreports.org/tir...ld-you-use-nitrogen-in-car-tires-a6260003694/

 

So if your tpms is set for 32psi how do you change it if you want it set at 30psi? Also overinflating isn't going to set off the tmps alarm. right?