Mix nitrogen and regular air in tires?

[MBrown]

I don't think it will be to much of a problem mixing nitrogen and air. I wouldn't over inflate your tires like that though. You tires are going to wear out in the middle.

 

[MBrown]

Originally posted by: jaedaliu
ride gets bumpier too. I tend to go under 3 or 4 psi when I get them checked. Smoother ride. My mileage suffers a bit, but only by 10% or so.

I wouldn't deflate them for a smoother ride because that outsides will wear faster. Also for every 5psi under 20% of the expected life of the tire is gone.

 

[jagec]

Originally posted by: Howard

Originally posted by: JulesMaximus

Originally posted by: GoatMonkey
You'll have a nice bald patch on the middle of your tires and have to replace them sooner, completely canceling out any MPG advantage you might have gotten. Plus they may have a higher chance of blowing out with increased PSI.

I had a friend who filled his car tires to 60 PSI because that's what he had always used on his bicycle.

ALWAYS have your tires installed by a trained and certified tire professional.

Uh?

That got me too, but I assume he meant "mounted", as in, putting a new tire on a rim. Not tightening your lug nuts.

 

[randay]

DO NOT MIX NITROGEN AND OXYGEN, this is a very dangerous combination that could cause your tires to melt at extreme temperatures.

 

[Pacfanweb]

Originally posted by: randay
DO NOT MIX NITROGEN AND OXYGEN, this is a very dangerous combination that could cause your tires to melt at extreme temperatures.

Right.....that's why you're breathing about 78% Nitrogen right now.

 

[randay]

Originally posted by: Pacfanweb

Originally posted by: randay
DO NOT MIX NITROGEN AND OXYGEN, this is a very dangerous combination that could cause your tires to melt at extreme temperatures.

Right.....that's why you're breathing about 78% Nitrogen right now.

you need to take in your sarcasmometer for a 5000 post tune-up.

 

[BD2003]

Originally posted by: WolverineGator
SecPro is right. Like other posters above I thought high pressures would cause uneven wear, a harsh ride, and poor traction. I have experienced none of those things and I run my tires at 50 psi for the gas mileage improvement. The tires are wearing evenly and have about half their useful life remaining.

50psi is pretty crazy. Must be like riding on bricks.

Anyway, the manufacturers recommended pressure is exactly that - recommended. It'll provide the mix of comfort and handling that they determined was right for your car. You have wiggle room from that spec though, but don't go more than 5-6 psi from that range. If you really want to get technical, the "proper" psi has more to do with how much weight you've got in the car than the numbers in the door jamb. A car full of 4 people can add 500lbs or more, and youd theoretically want to up the psi to compensate.

My car runs stock 32psi all around, but upping it to 36-38 provides a noticeable increase in steering response as well as a noticeable increase in ride harshness. I wouldnt have it any other way though.

Theres no uneven wear, traction is all still there, and the tread is still entirely flat to the ground. It would take a lot more than a few psi to really get to the point where you'd be lifting the sides of the tread off the road. Underinflation is the much bigger problem, as stock pressures dont even come near the max rating of the tire.

 

[xgsound]

Originally posted by: GoatMonkey
You'll have a nice bald patch on the middle of your tires and have to replace them sooner, completely canceling out any MPG advantage you might have gotten. Plus they may have a higher chance of blowing out with increased PSI.

I had a friend who filled his car tires to 60 PSI because that's what he had always used on his bicycle.

More air pressure also allows less flex at the sidewall, which produces less heat, which helps the tires longer. I've found that 32# to 38# seems to be the sweet spot for getting tires to last the longest, including any center tread wear. If you rotate the tires the center tread wear won't be a problem either.


Jim

 

[Rio Rebel]

Sometimes I think there's a kid somewhere who comes to Anandtech every day, and follows all the advice he sees because the people look like they really know what they're talking about.

Then I realize there can't be such a person. He'd be dead already.

 

[JulesMaximus]

NM...just realized this thread is 5 months old. :roll:

 

[biggestmuff]

Originally posted by: JEDI

Originally posted by: nakedfrog
What's the max PSI on those tires?

44psi

What's the door sticker say?