Improve steering feel
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Joined: May 2001
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Are you guys sure a stock 964 has 0 scrub radius? Asking because moving the wheel outward, via lower offset or spacer will make the scrub radius less negative.. If ET55 was 0, then ET50 will be +5mm (& ET52 = +3mm) so not likely.
Does Porsche define kingpin offset @ the wheel center or ground level? My hunch is that 0 offset is reported at wheel center height, which translates to a healthy negative value at the contact patch via the SAI. Anyone know kingpin angle for the narrow vs. wide 964's?
Steering wheel wasn't mentioned yet - changing to a smaller diameter usually helps by 1) increasing effort by reducing radius & 2) increasing effective gain (less hand movement for same change in wheel angle).
Careful with camber & toe, too much negative for either can make the steering overly 'darty'.
Does Porsche define kingpin offset @ the wheel center or ground level? My hunch is that 0 offset is reported at wheel center height, which translates to a healthy negative value at the contact patch via the SAI. Anyone know kingpin angle for the narrow vs. wide 964's?
Steering wheel wasn't mentioned yet - changing to a smaller diameter usually helps by 1) increasing effort by reducing radius & 2) increasing effective gain (less hand movement for same change in wheel angle).
Careful with camber & toe, too much negative for either can make the steering overly 'darty'.
The wider wheel provides more grip, an 8 will turn better than a 7 w/ the same tire
Thread Starter
Racer
Joined: Apr 2014
Posts: 372
Likes: 17
I did look at my geometry and looked at my tie-rods. I will update the 2. RS geo settings and look at the stiffer c4/rs tie rods!
I greatly appreciate the detailed input!
Wider wheels will be taken care of beginning of the year!
I greatly appreciate the detailed input!
Wider wheels will be taken care of beginning of the year!
Drifting
Joined: Feb 2013
Posts: 2,360
Likes: 6
From: UK
As bill rightly points out alignment is waaaay more important than components when it comes to how a 911 feels. You can have the best ever fandango shocks springs and bushes fitted but without alignment specs all "how it feels" chat is kinda irrelevant. Thankfully all 911s are designed in a way you can make them feel however you want but you need to find the right setup dude not the 'upgrade' parts sales dude.
Thanks for the "education". I'm currently on my 4th 964 RS, whilst having also owned three Mk 1 996 GT3's, a couple of 996 GT2's, a 996 GT RS, two 997 GT3's and a 993 RS.
I suspect I've had more alignments done on watercooled and aircooled Pork than you've had hot dinners ! But feel free to have a pop. Why don't you
And you are ...... ? ? The "dude" swapping his engine
I suspect I've had more alignments done on watercooled and aircooled Pork than you've had hot dinners ! But feel free to have a pop. Why don't you
And you are ...... ? ? The "dude" swapping his engine
Always liked you.
Last edited by BLACK-BETTY; Dec 16, 2014 at 10:05 PM.
