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YOUR RESEARCHThe new Pirelli PZero Corsa Tire
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many things
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Reported cause
Manufacturer recommended tire pressure is due to many things.
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Suggestion
Other people can find best pressures for best handling and will check pressures all the time.
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Suggestion
Manufacturer recommended tire pressure is due to many things.
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Suggestion
I don't know how that can be since I read in another thread that tire manufacturers set the right pressures.
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14 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
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Has anyone tried these out yet? Are they strictly for track use or also for street use? I've seen them advertised in the last few Panorama mags, but I don't see any info on them on Tirerack.com or even on the Pirelli web site. <img src="confused.gif" border="0">
[quote]Originally posted by 993RS:
<strong>It is a track tire, not for street use.</strong><hr></blockquote>
No, it is a track tire approved for street use. And, yes it is DOT approved.
That is fine tire and good for your car. It is not N rated if that being important to you. This is like tire pressure. Some people will not check so we must write specifications for people that do not check tires. Other people can find best pressures for best handling and will check pressures all the time.
Factory N specifications and high tyre pressures are written to those who not able to understand how to choose such matters for themselves.
[quote]Originally posted by HansM:
<strong>That is fine tire and good for your car. It is not N rated if that being important to you. This is like tire pressure. Some people will not check so we must write specifications for people that do not check tires. Other people can find best pressures for best handling and will check pressures all the time.
Factory N specifications and high tyre pressures are written to those who not able to understand how to choose such matters for themselves.</strong><hr></blockquote>
I am quite confused now. First, I am not quite sure if this tire is street legal. I was also looking for the right tire pressure but you say different people prefer different pressures. I don't know how that can be since I read in another thread that tire manufacturers set the right pressures. Also, what do you mean when you speak of N specification? Assuming what you say is correct, how do you know all this stuff?
Still looking for some valid answers.
Clarifications... a DOT approved tire, even if it is a race tire, is street legal. That does niot necessarily mean that it was designed to or even should be used on the street. The Corsa is basically the same as a Kuhmo Ecsta V700 and Hoosier R0S03. These tires are DOT legal. They will only last a few thousand miles if driven on the street. Depending on their constuction, the Hoosiers have no steel belts, they can be VERY prone to flats. I drive my Kuhmo V700's on the street, BUT, the car sees the street for only a 100-200 miles a month, less mileage than the car has been seein on the track recently. I am not sure if the Corsa is steel belted or not, it does have some tread, but it is definitely NOT a daily driver tire.
As for N rated, this is simply that the tire has been tested in conjuction with the OEM and PAG to work well on the car. I have never been a huge believer in these relationships as I believe they are delevoped more around business and money than performance and quality. <img src="graemlins/jumper.gif" border="0" alt="[jumper]" />
All that said, here are my questions...
1. Weight for the std 18" f&r sizes
2. Steel belted?
3. Base tread depth?
4. Anyone have them on their car yet?
I am thinking they may wear more evenly than the Kuhmos due to the tread design. The kuhmos tend to feather funny from autocrossing.
[quote]Originally posted by Radar:
<strong>
I am quite confused now. First, I am not quite sure if this tire is street legal. I was also looking for the right tire pressure but you say different people prefer different pressures. I don't know how that can be since I read in another thread that tire manufacturers set the right pressures. Also, what do you mean when you speak of N specification? Assuming what you say is correct, how do you know all this stuff?
Still looking for some valid answers.</strong><hr></blockquote>
I am recently retired Engineer from a German manufacturer. I am not allowed to discuss data from that and I can only state Engineering judgement for you. I monitired this web site for long time and could not join in while working for that manufacturer. The tires you look at are legal in USA where you posted from due to they are DOT approved. Manufacturer recommended tire pressure is due to many things. There are some laws for some countries there are also Engineering data and are also some legal issues. Anyone from the factory who will tell you tire requirements is always telling you official answer that it must be N and must be specification pressures. It is Engineering judgement in which I say those tires are OK even as they do not N rating have. It is same judgement that tells you tire pressure recoomendation is high for the 18" tires.
I am hope I am helping you to understand better.
HansM,
Ok, so the reccomended pressures are for people who do not check tires, so just give them a ball park pressure that works for all occasions.
Let's suppose I want to "check" tires. There has to be a minimum, as well as optimum. Maximum is obvious. So, as a retired engineer, I don't think you will be betraying trade secrets by giving me/us some guidelines as to what is optimum for a specific purpose. So, how about some guidelines?
[quote]Originally posted by Palting:
<strong>HansM,
Ok, so the reccomended pressures are for people who do not check tires, so just give them a ball park pressure that works for all occasions.
Let's suppose I want to "check" tires. There has to be a minimum, as well as optimum. Maximum is obvious. So, as a retired engineer, I don't think you will be betraying trade secrets by giving me/us some guidelines as to what is optimum for a specific purpose. So, how about some guidelines?
</strong><hr></blockquote>
Almost all of the tires being used on 996 and earlier 993 best working pressure at 40psi when they hot. For agressive driving you can starting at 30psi front and 32 psi rear. For driving more typical style, then 32-34 psi front and 34-36 psi rear works. These are being the pressures I use in mine own cars.
This is a source reference. Confirm exact model applicability in the original material.
