Level of Grip
06-19-2016 | 09:04 PM
#16
Rennlist Member
Joined: Feb 2011
Posts: 6,230
Likes: 1,287
From: Vancouver, BC, Canada
Am I getting my #s wrong wife's car is a 981 which I thought was a Boxster S Gen 3 car?
Next thing I am stating that the turn in is excellent but once in the turn the back is easy to break loose by just applying throttle or over G the car. Based on my experience which is considerable on P cars and racing the 997 and 991 series have more grip that's all I was stating.
Ian
Next thing I am stating that the turn in is excellent but once in the turn the back is easy to break loose by just applying throttle or over G the car. Based on my experience which is considerable on P cars and racing the 997 and 991 series have more grip that's all I was stating.
Ian
06-19-2016 | 09:28 PM
#17
Instructor
Joined: Aug 2015
Posts: 164
Likes: 2
From: Woodstock
I would assume the term ''sweeper'' is being misused.
Sweeper, to me, is a long, gentle and usually flat-out curve. If your 981 is getting out of shape at 35 mph on these, then you likely have a couple of flat rear tires.....
Sweeper, to me, is a long, gentle and usually flat-out curve. If your 981 is getting out of shape at 35 mph on these, then you likely have a couple of flat rear tires.....
06-20-2016 | 01:45 PM
#18
Burning Brakes
Joined: Aug 2015
Posts: 784
Likes: 61
From: Europe
I would like to know the radius of that "sweeper" to be able to calcuate what G's are being pulled at 35mph when the tires break traction. Just curious.
I find the traction limits in my CGTS are very high on dry surface - at much higher speeds than that. But it all depends on the radius of the corner in question, of course.
I find the traction limits in my CGTS are very high on dry surface - at much higher speeds than that. But it all depends on the radius of the corner in question, of course.
06-21-2016 | 09:06 AM
#19
Burning Brakes
Joined: Aug 2013
Posts: 1,105
Likes: 27
The Pirellis will make any car look bad.
I've tracked my Cayman for three years and the grip with good tires installed is fantastic. RE-11s if you want streets, NT01s if you use Rcomps. The Pirellis on my Spyder are very weak performers.
I've tracked my Cayman for three years and the grip with good tires installed is fantastic. RE-11s if you want streets, NT01s if you use Rcomps. The Pirellis on my Spyder are very weak performers.
06-21-2016 | 08:29 PM
#20
Banned
Joined: Jun 2016
Posts: 1,350
Likes: 12
From: Australia
2011 - 987 Spyder - 24.2s, 0.84g and 1.05g - (Motortrend test Vs 2010 Tesla Roadster)
Car-------time-s------g(avg)----lateral g
918---------22.2-----1.06----------1.12
991GT3-----22.8-----0.96---------1.11
911GT2-----22.9-----0.90----------NA
991T4S-----23.0-----0.93---------1.04
997GT3RS--23.4-----0.92---------1.08
981GT4-----23.5-----NA-----------NA Cayman GT4
991.2-------23.7------NA-----------NA 991.2
981GTS-----23.8----0.94---------1.04 Cayman GTS
9914S-------23.9-----NA------------NA
981S--------24.1----0.83----------1.04 Cayman S
991S--------24.1-----0.82---------1.03
987Spy---- 24.2----0.84----------1.05 Boxster Spyder 987
997GT3-----24.2-----0.81---------1.02
981---------24.3-----0.80---------1.06 Cayman Base
997GTS----24.4-----0.79---------1.00
987R-------24.5-----0.82---------1.01
Car-------time-s------g(avg)----lateral g
918---------22.2-----1.06----------1.12
991GT3-----22.8-----0.96---------1.11
911GT2-----22.9-----0.90----------NA
991T4S-----23.0-----0.93---------1.04
997GT3RS--23.4-----0.92---------1.08
981GT4-----23.5-----NA-----------NA Cayman GT4
991.2-------23.7------NA-----------NA 991.2
981GTS-----23.8----0.94---------1.04 Cayman GTS
9914S-------23.9-----NA------------NA
981S--------24.1----0.83----------1.04 Cayman S
991S--------24.1-----0.82---------1.03
987Spy---- 24.2----0.84----------1.05 Boxster Spyder 987
997GT3-----24.2-----0.81---------1.02
981---------24.3-----0.80---------1.06 Cayman Base
997GTS----24.4-----0.79---------1.00
987R-------24.5-----0.82---------1.01
Last edited by randr; 06-25-2016 at 06:28 AM.
06-21-2016 | 10:14 PM
#21
Rennlist Member
Joined: Sep 2014
Posts: 3,859
Likes: 47
From: ..............
pirelli's are an incredibly overrated high end tire... i think porsche only puts them on some of their new cars as an oem to keep michelin, dunlop and bridgestone on their toes from a purchasing perspective
06-22-2016 | 01:49 AM
#22
Rennlist Member
Joined: May 2007
Posts: 2,944
Likes: 204
Many Thanks!
2011 - 987 Spyder - 24.2s, 0.84g and 1.05g - (Motortrend test Vs 2010 Tesla Roadster)
Car-------time-s------g(avg)----lateral g
918---------22.2-----1.06----------1.12
991GT3-----22.8-----0.96---------1.11
911GT2-----22.9-----0.90----------NA
991T4S-----23.0-----0.93---------1.04
997GT3RS--23.4-----0.92---------1.08
981GT4-----23.5-----NA-----------NA Cayman GT4
981GTS-----23.8----0.94---------1.04 Cayman GTS
9914S-------23.9-----NA------------NA
981S--------24.1----0.83----------1.04 Cayman S
991S--------24.1-----0.82---------1.03
987Spy---- 24.2----0.84----------1.05 Boxster Spyder 987
997GT3----24.2-----0.81---------1.02
981---------24.3-----0.80---------1.06 Cayman Base
997GTS----24.4-----0.79---------1.00
987R-------24.5-----0.82---------1.01
Car-------time-s------g(avg)----lateral g
918---------22.2-----1.06----------1.12
991GT3-----22.8-----0.96---------1.11
911GT2-----22.9-----0.90----------NA
991T4S-----23.0-----0.93---------1.04
997GT3RS--23.4-----0.92---------1.08
981GT4-----23.5-----NA-----------NA Cayman GT4
981GTS-----23.8----0.94---------1.04 Cayman GTS
9914S-------23.9-----NA------------NA
981S--------24.1----0.83----------1.04 Cayman S
991S--------24.1-----0.82---------1.03
987Spy---- 24.2----0.84----------1.05 Boxster Spyder 987
997GT3----24.2-----0.81---------1.02
981---------24.3-----0.80---------1.06 Cayman Base
997GTS----24.4-----0.79---------1.00
987R-------24.5-----0.82---------1.01
