10-02-2015, 11:39 AM
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#1
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,799
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Porsche builds in understeer, its simply safer for unskilled drivers
Tire pressure will effect the under/oversteer.
I am running 32 f / 34 r vs factory 29 f /36 r
225/255 on 17's is much better the the factory 205/255 setup
What tires are you running?
Are you staying street stock, or running a modified class
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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10-02-2015, 12:41 PM
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#2
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Registered User
Join Date: May 2014
Location: Indiana
Posts: 16
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Quote:
Originally Posted by JayG
Porsche builds in understeer, its simply safer for unskilled drivers
Tire pressure will effect the under/oversteer.
I am running 32 f / 34 r vs factory 29 f /36 r
225/255 on 17's is much better the the factory 205/255 setup
What tires are you running?
Are you staying street stock, or running a modified class
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I am C Street in SCCA, car has not been modified.
Front tires I bought and are Nitto Neo gens,
Rears came on the car and are Maxxis MA-Z1 Victra, which seem to be darn sticky, probably more so than the fronts, but i tried to match the best I could.
__________________
1999 Boxster Base Ocean Blue Metallic 85k mi. New to me on 04/2014 w/ 83k mi.
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10-02-2015, 01:32 PM
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#3
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,799
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Quote:
Originally Posted by Jschindler
I am C Street in SCCA, car has not been modified.
Front tires I bought and are Nitto Neo gens,
Rears came on the car and are Maxxis MA-Z1 Victra, which seem to be darn sticky, probably more so than the fronts, but i tried to match the best I could.
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with different tires front and rear, it could change the handling a lot
Popular tires for AX in a 986 are the hankook RS-3
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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10-03-2015, 01:22 PM
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#4
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Registered User
Join Date: May 2014
Location: Indiana
Posts: 16
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Quote:
Originally Posted by JayG
Porsche builds in understeer, its simply safer for unskilled drivers
Tire pressure will effect the under/oversteer.
I am running 32 f / 34 r vs factory 29 f /36 r
225/255 on 17's is much better the the factory 205/255 setup
What tires are you running?
Are you staying street stock, or running a modified class
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Jay, I tried your pressures cold, and it seems to have given me a lot more steering at street speeds. Looks promising for competition tomorrow. Thanks!
__________________
1999 Boxster Base Ocean Blue Metallic 85k mi. New to me on 04/2014 w/ 83k mi.
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10-03-2015, 06:51 PM
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#5
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,799
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Quote:
Originally Posted by Jschindler
Jay, I tried your pressures cold, and it seems to have given me a lot more steering at street speeds. Looks promising for competition tomorrow. Thanks!
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Cool
Let up know how it worked out
I started thread a few weeks ago that has a formula for calculating tire pressure based on front and back weight and tire width
It gives you good starting point
Weight on front and rear
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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