Boxster S spin out...no warning
05-07-2003, 11:46 PM
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Boxster S spin out...no warning
Aside from the obivious I screwed up, I did 3 360s after rolling out of a 270 degree freeway on ramp, dry pavement. The speed , probably about 70 . What was un nerving was there was no warning, just a break and around and around , lots of smoke and counter stearing and a big hurry to get away from the on coming traffic. Got a tell you though it was a #%$@!!!&*^%$ rush <img border="0" title="" alt="[Eek!]" src="eek.gif" />
05-08-2003, 03:28 AM
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Question,how much tread did you have on those tires??One thing i know about the Boxster is you have to have GOOD quality tires with ENOUGH tread life to drive hard.Bad,worn tires and a mid-engine platform spells for disaster.
05-08-2003, 09:13 AM
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Correct me if I'm wrong, but I also understand that mid-engined cars are like that...exceptional ultimate handling, but less forgiving and little warning at 10/10ths.
I've had a similar incident in an older (non-P)car. The (other) problem with street driving is a change of road surface quality. I turned onto an on-ramp at relatively slow speeds, hit a slick/greasy patch of concrete and around I went! Totally took me by surprise. It doesn't have to be wet, either.
I've had a similar incident in an older (non-P)car. The (other) problem with street driving is a change of road surface quality. I turned onto an on-ramp at relatively slow speeds, hit a slick/greasy patch of concrete and around I went! Totally took me by surprise. It doesn't have to be wet, either.
05-08-2003, 12:05 PM
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To add to my comment.I had PZeros that snap on me(didnt do a 360)with no warning,but the tread was low,i also think the tires werent warm.These new Yokohama AVS sport are great.They are very progressive at the limit.I love it.When i feel the back end come around,it gradually does so.I have much better control of the car.I no longer have the feeling the car will go without warning.
05-08-2003, 02:54 PM
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Glad your ok
Usually in the dry worn tyres have more grip than new ones, most manufactures use the same compound right the way down so when the tyres are bald you actually have more of that lovely sticky compound in contact with the road giving you more grip. The main reason we have "tread" on road tyres is to allow channels in between to displace water in the wet and get some rubber in contact with the road when there is water on it.
On new tyres as well as their being less compound in contact with the road due to the gaps in the tread, when the tread depth is high the treads themselves can flex as the load increases on them reducing the grip further.
Agree getting PSM is a good point, I didn't have it on the first car and had a couple of unwanted tail slides when I wasn't concentrating. The new one has it and I leave it on nearly all of the time on the road only switching it off when I want to have a bit of fun
.
Usually in the dry worn tyres have more grip than new ones, most manufactures use the same compound right the way down so when the tyres are bald you actually have more of that lovely sticky compound in contact with the road giving you more grip. The main reason we have "tread" on road tyres is to allow channels in between to displace water in the wet and get some rubber in contact with the road when there is water on it.
On new tyres as well as their being less compound in contact with the road due to the gaps in the tread, when the tread depth is high the treads themselves can flex as the load increases on them reducing the grip further.
Agree getting PSM is a good point, I didn't have it on the first car and had a couple of unwanted tail slides when I wasn't concentrating. The new one has it and I leave it on nearly all of the time on the road only switching it off when I want to have a bit of fun
.
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05-08-2003, 04:37 PM
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</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by JumJum:
<strong>Usually in the dry worn tyres have more grip than new ones, most manufactures use the same compound right the way down so when the tyres are bald you actually have more of that lovely sticky compound in contact with the road giving you more grip. </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">I agree with everything in your post, but I will add that the above is not the case with Michelin Pilots. On my M3, when the tread got shallow, the Pilots got very greasy. It was entertaining, but far from high performance.
-Paul
<strong>Usually in the dry worn tyres have more grip than new ones, most manufactures use the same compound right the way down so when the tyres are bald you actually have more of that lovely sticky compound in contact with the road giving you more grip. </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">I agree with everything in your post, but I will add that the above is not the case with Michelin Pilots. On my M3, when the tread got shallow, the Pilots got very greasy. It was entertaining, but far from high performance.
-Paul
05-08-2003, 09:56 PM
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The tread, or lack there of was down to the wear indicator bars. This is on Dunlop SP9090S original 2001s.
I am considering either replacing with the same, Michelin Sport Pilots or Bridgestone OS3s. Is there a consensus on the best. I don't think I can retro the PSM, Lord knows I would love to.
I am considering either replacing with the same, Michelin Sport Pilots or Bridgestone OS3s. Is there a consensus on the best. I don't think I can retro the PSM, Lord knows I would love to.
05-08-2003, 10:29 PM
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I think that was your problem,worn tires,it happen to me.The tires that youre looking at are qualiy tires in the higher price bracket.All tires have different characteristics.Check out tirerack.com survey results and pick whats best for you.
05-09-2003, 02:54 AM
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I agree with the others. My Michelin's were very slippery when they were down at the indicator bars. I now have <a href="http://www.falkentire.com" target="_blank">Falken</a> Azenis Sports and they grip great! Even now as the rears are getting down there again, they still hang on. Relatively inexpensive too. I think the extra grip they give is well worth loosing some width in the rear.
/net
/net
05-10-2003, 11:08 AM
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Check out the Yokohama AVS models, too. The AVSi was one of my favorites on the M3, but it's been replaced ny the AVSdB and the AVS ES100 models. Haven't tried the dBs yet, but the ES100s are a teriffic bargain. Of course the AVS Sports are flatout awesome.
-Paul
-Paul
05-10-2003, 02:40 PM
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Acknowledging the worn tires is one thing, but what REALLY caused the spin?
Did you lift? Rough with the wheel? Change in road surface?
I think its important to determine WHY you spun...especially when it happened at 70mph.
Did you lift? Rough with the wheel? Change in road surface?
I think its important to determine WHY you spun...especially when it happened at 70mph.