Tire pressure?

[06silveryaris]

40 psi car feels good and when pushed hard I do not see any wear on the sidewalls.

[Doug007]

Originally Posted by 06silveryaris

40 psi car feels good and when pushed hard I do not see any wear on the sidewalls.

Agreed - for me 40 psi works well for my driving style and the roads I regularly traverse. My overall mpg is 41 so good fuel economy is present as well.

[KCALB SIRAY]

Originally Posted by Doug007

Agreed - for me 40 psi works well for my driving style and the roads I regularly traverse. My overall mpg is 41 so good fuel economy is present as well.

I run 40 as well, and average 42 on the highway. Not even a HM'r either

[*MAD DOG*]

Originally Posted by BailOut

*MAD DOG*,

Tires blow out due to manufacturing defects or excessively hard driving. It is likely that the one tire you experienced this with one time would have blown out even at a lower pressure.

By your logic someone that had a blowout at the pressure on the door jamb could forever run around claiming that you should run 20 PSI lower than the door jamb.

Look dude. I, as you have made my feelings quite clear on this topic. I you. I think we'll just have to agree to disagree on this one.

[smacky]

I run mine at 50 psi cold, though I really should check them more often. I am thinking about going up to 55 soon though. With all the miles logged by Bailout and everybody at cleanmpg.com have, I really don't think it is an issue at all.

[b_hickman11]

I wonder if they could make tires out of used condoms.....

[*MAD DOG*]

Originally Posted by b_hickman11

I wonder if they could make tires out of used condoms.....

How do you think they make goodyear tires? They get 365 used condoms and turn it into a tire and call it a "good year"

[YAR1S]

Originally Posted by *MAD DOG*

How do you think they make goodyear tires? They get 365 used condoms and turn it into a tire and call it a "good year"

haha oh my god....

[dg4rez]

Originally Posted by b_hickman11

I wonder if they could make tires out of used condoms.....

some people dont like riding on rims.

[YarisSedan]

Well I guess you should help rewrite the books and reteach the teachers at my school. Cause when i took tire and alignment in school they specifically made it clear to make sure you never inflate a tire past the maximum amount stated on the sidewall.

Sidewide is there for a reason to be able to flex and absorb defects in the road. Otherwise on a loaded car at high speeds you hit a large dip or pothole kaboom. Not to metion if you have a 08 model with tire pressure sensors and you atempt to put more than 50 psi in your tire you will damage the sensors. So that 1 or 2 mpg you save results in you spending hundreds for replacement sensors. Or the additional tire wear that is going to cost you more on tire replacement. Or the fact the in wet weather you are more likely to skid. Or the decrease in your stopping distance making your car more likely to get in a accident if someone cuts you off.

So now not only are you putting yourself at risk you are putting others. Thats just my 2 cents. Ive read several hypermiling articles and techniques. And many of them advise not to overinflate your tires beyond the max. I worked at a tire shop a few years back and i remember whenever we had to inflate the tires to set the bead we would put the tire in a tire cage if we needed excessive pressure like in the 70s for fear of the tire exploding and injuring employees. But wait osha requires the employees to have a tire cage in all tire shops when inflating tires in excessive psi past the max raiting of the tire?

I am basing my knowlege what i was taught in school and from real life experince.

[gid]

I find that anything above 35 p.s.i. makes for a much stiffer ride . Thus when tires are set at high p.s.i. it makes for more wear and tear on your suspension . Tires are considered part of the suspension . Go here , http://www.caranddriver.com/reviews/...re+page-5.html .

[YAR1S]

Ongoing debate.... wether or not 60+ psi will be more good than bad.

personally I would rather run them at safe levels... in the 40 range... rather than in the 60 range...

I still average at 40 mpg, at 32 psi in my tires... Im not willing to get a few more by inflating my tires more....
A lot of points have been made here today but in the end its what you feel comfortable with... we all have respect for one another.... and there isnt a rule for PSI in tires... but there are ups and downs for all ranges....

I'd love to see some stats. on the amounts of tire damage/blowouts on specified limits versus over-inflation....
from a good source too.... not just from drivers submitting online their info...


Hmm.

[DFA]

I run mine at ~40-45 (max sidewall), i haven't checked in awhile so it might be lower than 40 right now.

[DefStarYaris]

I keep mine at about 35psi. Works fine for me.

[nemelek]

Which tire lasts longer? The one that runs at 32psi or the one that runs at 60psi?

[BailOut]

4MPG,

Your logic is flawed in several ways.

1) Center tread wear has not been an issue since the invention of the steel belted radial. Please update your personal cache of information.

2) I already mentioned that dropping pressure by a significant amount will help traction, but it does so through a pure "grippy" fashion rather than a tread-clearing fashion and will eat through your tires rather quickly. While this technique can certainly work on a clean, dry track the real world is a much different environment.

3) Your ideas on everyday traction seem solid except for one glaring issue: Millions of miles of road testing - that is testing as opposed to simply regurgitating what one was told one time - have shown the exact opposite to be true. Even police departments are starting to mandate pressures as much as 50% higher than the old recommendations for better handling and longer tread life.

Originally Posted by nemelek

Which tire lasts longer? The one that runs at 32psi or the one that runs at 60psi?

The one that runs at higher pressure, every single time. This has held true over millions of road miles of testing, in every kind of environment and on every type of vehicle it has been tried on. You certainly have the freedom to believe regurgitated rhetoric but for my money I go where the actual testing has been done.

[b_hickman11]

Originally Posted by BailOut

4MPG,

Your logic is flawed in several ways.

1) Center tread wear has not been an issue since the invention of the steel belted radial. Please update your personal cache of information.

The one that runs at higher pressure, every single time. This has held true over millions of road miles of testing, in every kind of environment and on every type of vehicle it has been tried on. You certainly have the freedom to believe regurgitated rhetoric but for my money I go where the actual testing has been done.

I had a 2005 Tacoma with factory 20's on it and went through 2 sets of tires in the 3 years I had it. The 1st set of tires had massive center tread wear problems, and yes they were radial tires. So yes its still an issue. I was running about 5 psi over the recommeded psi and the dealer told me that was the reason why. The 2nd set of tires I ran at or below the recommeded psi and I didnt have the center wear problem. Also the 2nd set of tires lasted about 20,000 miles longer than the 1st set. Both sets were the same brand. So theres some actual real world examples. None of this "testing" crap.

[BailOut]

Originally Posted by b_hickman11

I had a 2005 Tacoma with factory 20's on it and went through 2 sets of tires in the 3 years I had it. The 1st set of tires had massive center tread wear problems, and yes they were radial tires. So yes its still an issue. I was running about 5 psi over the recommeded psi and the dealer told me that was the reason why. The 2nd set of tires I ran at or below the recommeded psi and I didnt have the center wear problem. Also the 2nd set of tires lasted about 20,000 miles longer than the 1st set. Both sets were the same brand. So theres some actual real world examples. None of this "testing" crap.

Perhaps your first set of tires were not steel belted? Many truck tires are not, or are not fully belted. The ones that came on my friend's 2004 Tacoma were not fully steel belted, nor were the ones that came on my coworker's 2008 Tacoma.

Additionally, I would be wary of trusting anything undocumented from a dealership, and only about half of what is actually documented. They are in the business of making money and will say anything to that end. They simply DO NOT want you to get any kind of longevity out of your tires, especially if they offer a tire service.