1198r

Had my geometry looked at by professional outfit and would appreciate comments as I would like my car to still turn a bit quicker but she snakes a bit under heavy braking:

Front
Camber left: -0.9 deg now -1.3 deg
Camber right: -1.8 deg now -1.5 deg
Toe left: 0.6mm now 0.4mm
Toe right: 0.2mm now 0.2mm

Rear
Camber left: -1.6 deg now -2.0 deg
Camber right: -2.2 deg now -1.9 deg
Toe left: 0.4mm now 1.0mm
Toe right: 0.8mm now 1.1mm

Setback front 15mm left as is

Ride heights not touched.

TRAKCAR

No expert, but I can tell you what I have after 7 allignments from a good shop:
F -2.5 Camber zero toe
R -1.7 Camber 2 mm toe in each side.

Lowered 10 mm.

Front bar soft, rear bar middle.
This is with Toyo's and I guess that the grip level is similar to OEM.

You seem to not have enough front camber and you could have a bit more toe in rear that and a proper LSD will stop is from snaking.

911SLOW

Fixed it for a

+1

savyboy

"Snaking" (nice mental picture) = the famous non-functional, years-old design OE LSD. Have Guard (Matt Monson) send you the proper parts that Porsche cheated you out of.

You might also go tighter on front bar and tightening rear bar same number of holes. While the soft front will help turn-in, it also can allow the front to wallow a bit under heavy high-speed braking.

PS- I run 1.5mm per side rear toe-in and it works fine for me.

There are a lot of variables that affect the handling but all this is good food for thought.

CRex

Whoa... rear toe out... I guess you like your tail very loose?

911SLOW

he means toe in otherwise he wouldn't be here now typing

Carrera GT

Savy needs the toe-out and a "MIG" diff ...

http://www.youtube.com/watch?v=gWwzN4BXVuE

mkozink

Toe is measured in degrees and minutes (60 minutes or arcminutes/degree), not millimeters.

My current alignment;

Front camber - 2.5 degrees
Front caster 7.1 degrees
Front toe -0.03 minutes
Rear camber -2.5 degrees
Rear toe 0.15 minutes

savyboy

Ack- yes.

CRex

+1 on the use of degrees. Lengths change with tire sizes. The same 0.15 minutes (i.e. 0.15°) will be result in extra ~1mm of toe going from 18" to 19"s, just as an illustration. By that token, different tire sidewall profiles will also screw around with this math.

When the .2 3RS came there was talk of running less negative camber up front, primarily because of the increased front track. Mkozink's setup is what I ran on my .1 RS. I may start with less front camber and dial that up over time.

savyboy

Yes yes, I like this! I want to be a drift king. Would be fun to try drifting Thunderhill.

911SLOW

Not true.. you can measure toe in mm or inches as long as you know the tire diameter. Distance of toe is tire diameter dependant.

1198r

Hey - THANKS! Food for thought indeed. Tracking Yas Marina full GP circuit tonight so will see how it goes!

mdrums

...so if you run stock 19's for the street and 18's for the track you should have your car aligned on the 18's????

mdrums

The place in Tampa where I have my car aligned gives me read out's all in degrees. I have a 09 Carrera S...narrow body like a GT3 and have GT3 LCA's for more front camber. My alignment read out is:

-2.3 degree's camber front
.01 degrees toe

-1.9 degrees camber rear
.14 degrees toe rear

How does this compare to the toe specs in minutes or inches?????