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Jul 25, 2008 4:27:01 AM
- ADias
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Re: Michelin ZP
Quote:
bvineyards said:
good. then may be the next f#@*ing nail i catch in the side wall will not cost me $500.
Runflats will not solve that. Sidewall punctures still require tire replacement.
Runflats provide peace-of-mind for run-of-the-mill punctures, which will allow you to drive home (up to 100 miles). And... runflats do not seem to suffer from blowouts.
LeChef asked if PAG will sanction these M-PS2-ZP with an N-rating... I do not know.
Re: Michelin ZP
Quote:
reginos said:Quote:
ADias said:
LeChef asked if PAG will sanction these M-PS2-ZP with an N-rating... I do not know.
From past experience PAG will be the last to apply a new technology or sanction a new product.
Indeed. They either let other manufacturers test / prove a product, or sometimes make their best customers do it to everyones' dissatisfaction, as with PCCB gen 1.
Re: Michelin ZP
Porsche on a run-flat tire, I don't think so. BMW was the first company and they have the most experience, but it took a few years before they started to get it right. The first sporty car from BMW that didn't crash around when I drove it is the 1-series coupe, so it's just recent.
Also, the M3 gets regular Pilot Sports because the runflats wouldn't work.
In this respect, if the M division says runflats are no good for sports cars, maybe Porsche will say the same.
Having said that, I recenlty had a puncture on my BMW and thanks to the runflats, I could finish my business that day, drive all over the place on the bad tire and have it fixed in the afternoon.
It was a real delight. But not the exact sort of compromise I would want on the GT3.
Also, the M3 gets regular Pilot Sports because the runflats wouldn't work.
In this respect, if the M division says runflats are no good for sports cars, maybe Porsche will say the same.
Having said that, I recenlty had a puncture on my BMW and thanks to the runflats, I could finish my business that day, drive all over the place on the bad tire and have it fixed in the afternoon.
It was a real delight. But not the exact sort of compromise I would want on the GT3.
Jul 25, 2008 12:44:29 PM
- Porsche-Jeck
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Jul 25, 2008 4:10:19 PM
- bvineyards
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Jul 25, 2008 4:23:35 PM
- Ferdie
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Re: Michelin ZP
As far as I'm concerned the rims have to ensure the deflated tire will not get of, therefore one cannot simply convert to run-flat tires. Furthermore the stiffer sidewalls have to be considered, as Marek said BMW had to adapt the cars' suspension to cope with this.
On performance cars, only GM offers these tires on the Corvette and this shouldn't come without a reason.
On performance cars, only GM offers these tires on the Corvette and this shouldn't come without a reason.
Jul 25, 2008 4:45:41 PM
- Porsche-Jeck
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Jul 25, 2008 4:46:17 PM
- Stephenkng
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- Reply to: bvineyards
Re: Michelin ZP
Quote:
bvineyards said:
I got a cost-free tire warranty when I bought my Michelins (will cover nail punctures and any other damage)
i will look into that today. never thought of it. thanks for the info!
I believe some tire store do offer tire insurance at around $30 - $40 per tire. I got that for the wife's ML at $25/tire from Big O. If you can trust Big O with yours, you can get it from them.
Re: Runflats are very heavy.
I was watch a video yesterday, although it was all in Japanese that I do not understand, but I think the new Nissan GTR come in run-flats...
http://ca.youtube.com/watch?v=q3Wa3K50l5s&feature=related&locale=en_CA&persist_locale=1
fast forward the video to 5:15sec... it shows you that Nissan staff let all the air out of the tires and have the TV person drive it onto the track...
http://ca.youtube.com/watch?v=q3Wa3K50l5s&feature=related&locale=en_CA&persist_locale=1
fast forward the video to 5:15sec... it shows you that Nissan staff let all the air out of the tires and have the TV person drive it onto the track...
Jul 27, 2008 9:34:23 AM
- dreamcar
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Re: Michelin ZP
Quote:
Porsche-Jeck said:Quote:
bvineyards said:
good. then may be the next f#@*ing nail i catch in the side wall will not cost me $500.
I got a cost-free tire warranty when I bought my Michelins (will cover nail punctures and any other damage)
I had that with our first Boxster, but shortly after that the insurance was discontinued by Porsche here in the UK.
Re: Michelin ZP
For spare tire sake, it may well not be needed much unless you get a side-wall issue. Driving my VW Golf over the gravel/cattle guard paved road that is a pass near Salmon, Idaho this past week and having a bit of fence wiring puncture a rear tire to flatness (a good 2 inches of it still sticking out of the tread at an angle), I was able to use the 'fix-a-flat can' type sealant/inflater to get the tire back up to 80% or so and drive the remaining 35 miles into the nearest town to have a tire shop there put a proper patch on the tire (in the tread no less). And that was with 3 people in the car.... but only doing about 45mph once I hit pavement again.
So I'm more confident in trusting the newest 'on the road' patching goops and an inflater these days. But, having a spare is key if you get a sidewall cut and don't want to wait the hours for a tow to get you... (where you end up being in a shop that will have to have the replacement tire fedex'ed in.
So I'm more confident in trusting the newest 'on the road' patching goops and an inflater these days. But, having a spare is key if you get a sidewall cut and don't want to wait the hours for a tow to get you... (where you end up being in a shop that will have to have the replacement tire fedex'ed in.
Re: Michelin ZP
You guys who LIKE runflats must only travel in urban areas...They have potential for life-threatening risk where I live as a sidewall 'failure' in -20F rural, no cell phone coverage, no P-car friendly towing areas leave you unable to help yourself, and no one able to help you. A tire shop capable of dealing with big rims may be hours away.
A better way will have to be found, as I, at least, will never own a vehicle with runflats as we now know them.
A better way will have to be found, as I, at least, will never own a vehicle with runflats as we now know them.
Contradiction
Quote:
daking said:
You guys who LIKE runflats must only travel in urban areas...They have potential for life-threatening risk where I live as a sidewall 'failure' in -20F rural, no cell phone coverage, no P-car friendly towing areas leave you unable to help yourself, and no one able to help you. A tire shop capable of dealing with big rims may be hours away.
A better way will have to be found, as I, at least, will never own a vehicle with runflats as we now know them.
This seems like a contradiction. If I lived in the country I would want runflats. Even sidewall failure would mean I could drive it to the nearest town or for a few days until the new tire came in.
If I drive standard tires and I get sidewall failure in the country, then I'm truly f*cked. The glue won;t work on the sidewall. I can't drive anywhere, and I have to wait for the tow truck (no flatbed available) to come and tow me to the nearest town. In -20F that's not too healthy a proposition.
I for one would like Porsche to either offer a mini spare as standard or to offer runflats so I can avoid being stranded "out there".
Re: Contradiction
Quote:
Le Chef said:Quote:
daking said:
You guys who LIKE runflats must only travel in urban areas...They have potential for life-threatening risk where I live as a sidewall 'failure' in -20F rural, no cell phone coverage, no P-car friendly towing areas leave you unable to help yourself, and no one able to help you. A tire shop capable of dealing with big rims may be hours away.
A better way will have to be found, as I, at least, will never own a vehicle with runflats as we now know them.
This seems like a contradiction. If I lived in the country I would want runflats. Even sidewall failure would mean I could drive it to the nearest town or for a few days until the new tire came in.
If I drive standard tires and I get sidewall failure in the country, then I'm truly f*cked. The glue won;t work on the sidewall. I can't drive anywhere, and I have to wait for the tow truck (no flatbed available) to come and tow me to the nearest town. In -20F that's not too healthy a proposition.
I for one would like Porsche to either offer a mini spare as standard or to offer runflats so I can avoid being stranded "out there".
Precisely!
Runflats do not have sidewall failures and are far less prone for blowouts at speeed. Modern runflats have great grip and are not any harsher than a standard low-profile PS2.
Re: Contradiction
Quote:
daking said:
I have a spare on my'01, so I'm fine with being able to help myself.
Maybe I haven't used the right words re 'sidewall failure'.....if I hit a sharp-edged rock or piece of metal, will a runflat do so if the the tire is heavily damaged?
Runflat will keep rolling. Regular tire will shred itself all over the wheel arch.
Jul 31, 2008 6:41:59 PM
- Jim48
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- Loc: Virginia, USA
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Re: Michelin ZP
Quote:
Minok said:
Groovy... now if I recall from some discussion I heard many years ago, there's some disadvantage to the high sidewall strength of the run-flat type tires, right? (not that they exist in sizes to put on a 997 yet)
I'm not so sure that is as detrimental today. The low-profile tires (PS2) used in 997 s today have very stiff sidewalls too.
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