This may sound a bit dumb to some of you, but bear with me.
I recently bought my first set of performance tires and upon inspecting the PSI discovered that instead of the 51 psi they are said to hold they were only at 41.
My question is; Why did they fill up the tires to 41? Should I keep them at 41, or fill them up closer to 51?
Like I stated before, this is my first set of performance tires, so I've never had to worry about anything over 44 psi.
Any help is appreciated.
i always had mine ay 35psi..
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any particular reason behind that?
it just seems to be a good #,and are you sure youre not looking at MAX psi?
Yeah that's what I meant with "the 51 psi they are said to hold" , sorry if I don't make sense I'm kinda groggy I just woke up...
So, you both keep yours around 35psi? Do they perform better at that psi or is that just where you guys always filled your tires to?
they will burn the centers out at that high of a pressure. I run 32-35 in mine. softer ride, and even wear.
I see, So by what you guys are saying I should actually let some air out of my tires...
Dyne322 wrote:I see, So by what you guys are saying I should actually let some air out of my tires...
Yes, a whole lot too..32/35 psi is reccomended for 99% of street tires
It just depends on what you want. I run mine at 40 psi so I don't get as much roll. Just db check them to see how they are wearing in a month or so. If they wear more in the center take out air, if they are starting to just wear on the sides you are a little low on air or you take turns fast.
TRD Cav Fire wrote:It just depends on what you want. I run mine at 40 psi so I don't get as much roll. Just db check them to see how they are wearing in a month or so. If they wear more in the center take out air, if they are starting to just wear on the sides you are a little low on air or you take turns fast.
Yeah I got a hold of some tire pros, i.e. the people who installed them, and my dad. They all said the same thing. So I'll probably keep them at 40-41ps or so. Thanks for the help guys.
Terry, that depends on who put them on and where you want them. The tires on my GTP are rated at 51, and I usually keep them at about that (until the air leaks back out anyways due to my cheap sears rims).
I do know that when I worked at Cooper we would always fill tires at a lower pressure than what it was rated at on the performance tires. The reason for this is because with less air in the tire, it's a bit softer ride, and you're less likely to notice any vibrations or anything of the sort.
Personally, on my car I would put the pressure up all the way to what the tire says. If it's a little bit of a harsh ride, back a few psi off out of each tire and see how it feels. Also, keeping the pressure lower will give you more rolling resistance. This will mean that your engine needs to work harder to move the thing, thus equaling less accleration, and of course... gas mileage.
Good point man, I'll definitely give it a try. I just got done with a sit down with my dad and we agreed I should keep them close to the 51psi
btw I got them done at carko.
I for one wouldn't do that. I've done a lot of messing around with tires when I worked at Discount Tire. While running your tires at that psi you are making your suspension cry out in pain. We all know that the mounts are our cars are not the best to begin with. Since you will be airing the tire up so high it wouldn't allow the tire to do any of the work it was made to do. It would make your struts and mounts wear much faster then they are now since they are the ones that would be doing more traveling. Another thing is that with your psi at such a higher setting you are putting less of your tire on the ground that could cause you to not move as much water out from under your car. The settings of the tire running at a high psi is for larger more heavy cars. Please do take them over 42 or 43 psi. It could also cause your tires to cup much faster. It will only save your a little to run that high of psi in your tires, but cost you more in the long run. Trust me unless you have 19's on your car it doesn't need to be that high of a setting.
Dyne322 wrote:Good point man, I'll definitely give it a try. I just got done with a sit down with my dad and we agreed I should keep them close to the 51psi
btw I got them done at carko.
Carko kicks ass.
I used to work for Tom and Carl at Cooper. So that's where I learned that, 100% gaurantee that's why they're only aired up that far.
the rating on the tire is max pressure, that is not what your are supposed to set the tires at. if you look at the door of your car there should be a sticker that will tell you the pressure for your car, each car is diffrent do not set your tires at the max rating. with your weight of car you will be overinflated causing the center of the tread to wear out allot faster then the outer and your tires will not last as long. the reason they put a max rating on there is so people don't go past that but it really has to do with the weight of each individual car a heavier car will require more psi in the tires then a lighter car such as a cavalier.
not to mention if the tire is aired up to its max setting, when that tire sits out in the hot sun all day your pressure is going to rise and now you are driving around on tires that are beyond their maximum rating.
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While that may be true, that sticker has in mind a certain type and size of tires. Once you go away from that, you'll need to run something different.
no as far as ive ever been told that sticker is based on how much air pressure is needed for your car for properly inflated tires. type and size shouldn't matter. ive talked to a few tire speacialists about it and they have all said the same thing.
if you think about aftermarket tires their generally going to have allot stronger sidewall so if the tire affected the airpressure chances are you'd need less air pressure then with a stock tire not more.
running near your max air pressure will give you a rougher ride. genearlly a tad less traction and possibly wear your tires out quicker. there is no benefit to running a tire near its max.
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If you insist so. But from my personal perspective, i'll start believing what you say when I start to see a problen.
SHOoff wrote:If you insist so. But from my personal perspective, i'll start believing what you say when I start to see a problen.
Well since your cheap rims leak they are never at that for long... So get new rims and keep them at the high psi you want. Just so you know once the tires get heated up you can get a heat ring in the inside of the tire.
Larger wheels do not mean more or less pressure...use the same pressure as
recommended in the owners manual/door label to start, and adjust up or down as
comfort/performance/tire wear dictate...
I used to work for both GOODYEAR & Firestone, & that is exactly what I was taught in classes. ^^^
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