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981 Spyder - Tire hop or scrub in tight turns - ?

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Old 12-21-2017, 03:48 PM
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SpyderSenseOC
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Default 981 Spyder - Tire hop or scrub in tight turns - ?

I searched and found nothing. My car's front tires hop/scrub during low speed tight turns. Standard operating procedure, I presume, due to a tight turning radius?
Old 12-21-2017, 03:50 PM
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extanker
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and cold tires.....it should lessen in the summer time
Old 12-21-2017, 03:52 PM
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conceptDawg
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Normal. Nothing to worry about and it's due to the steering setup/characteristics.
It gets worse as the tires age and when it's cold but you can safely ignore it.
Old 12-21-2017, 03:53 PM
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SpyderSenseOC
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Originally Posted by conceptDawg
Normal. Nothing to worry about and it's due to the steering setup/characteristics.
It gets worse as the tires age and when it's cold but you can safely ignore it.
Figured. Thanks. Alarming the first time you hear it. You think you ran over something or your wheel is falling off!
Old 12-21-2017, 08:39 PM
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Dalema
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Search "acorns" on here. Not kidding
Old 12-21-2017, 09:02 PM
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frankle951
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OOOK
Old 12-21-2017, 10:20 PM
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GregWormald
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I did find some information under it's proper name on Wikipedia. Sorry can't remember the name. A Google search will turn up hits.
Old 12-21-2017, 10:36 PM
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FlamsteadHill
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Happens even in my 987.1 S in reverse. Fact of nature.
Old 12-21-2017, 11:07 PM
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CaymanSinAR
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Ha! Glad I read this thread. My BMW does this when I back out of my parking space at work. Was driving me crazy. I got out several times looking for a rock (acorn!) or something I'd run over. Now I know.
Old 12-21-2017, 11:17 PM
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conceptDawg
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Google Ackermann steering geometry.

Specifically, from the wikipedia entry:
Some racing cars use reverse Ackermann geometry to compensate for the large difference in slip angle between the inner and outer front tyres while cornering at high speed. The use of such geometry helps reduce tyre temperatures during high-speed cornering but compromises performance in low-speed manoeuvres.[
Old 12-22-2017, 10:22 AM
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cobalt
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Pirelli P zeros? I had them on my Cayenne GTS and my Boxster GTS and had this problem with both. swapped them out to Michelin MPS2's and the problem is gone. I hate P zeros. The Pirelli's also heat cycled out after only 4k miles combined street with around 1000 of that as track miles.
Old 12-22-2017, 10:36 AM
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P Zero's are awesome, now the potenza's it came with are a different story.
Old 12-22-2017, 11:27 AM
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cobalt
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Originally Posted by terbiumactivated
P Zero's are awesome, now the potenza's it came with are a different story.

Interesting both mine came with P zeros. Will never buy them. Sidewall is way to stiff and they don't last. I am not a fan of the potenza's either.
Old 12-22-2017, 11:57 AM
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Originally Posted by terbiumactivated
P Zero's are awesome,.
P zero are the ****test tyre ever.
Old 12-22-2017, 12:04 PM
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Dalema
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Originally Posted by cobalt
Pirelli P zeros? I had them on my Cayenne GTS and my Boxster GTS and had this problem with both. swapped them out to Michelin MPS2's and the problem is gone. I hate P zeros. The Pirelli's also heat cycled out after only 4k miles combined street with around 1000 of that as track miles.
^^^^ This on my 911 that had the N0 Pzero.

Spyder came with N1 Pzero - much better. Will be swapping to MPSS as soon as I can though.


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