the 08/09 Suspension/Brake reference

[Big Sky WRX]

I'm going to try and put much of the suspension/reference material for the 08/09's in one thread

starting w/ the oe alignment and ride heights:



it appears the 08/09's are able to get close to the same front camber as the previous gen w/ the oe eccentric bolt -1.0 - -1.3

refer to the alignment sticky for tips/tricks for optimizing the alignment

here are the front and rear suspension schematics w/ torque specs

Front



torque specs



rear w/ torque specs

[Big Sky WRX]

useful dimensions

curb weight 3175 lbs
Coefficient of drag (cd) sedan .32, hatch .34
wheel base 103.1"
track front 58.9", rear 59.3"

rims 17x7 et55

springs rates 08 f/r 151/140 #/"; 09 216/193

sway bars 08 f/r 20/15 mm; 09 21/16

Motion Ratio for springs front .97, rear .78; for sway bars front .56, rear .59

Center of Gravity (cog) 20.1"

Roll Centers front, rear -coming

[Big Sky WRX]

saved

[Big Sky WRX]

BRAKES

brake dimensions the 08/09 share the same front brakes as the 03-05 WRX- this means it utilizes the same rotors and pads, the rears are brand new so the pads and rotors are different than any previous Impreza



the pad FMSI numbers are front D929, rear D1114

929

[ScorpionWins]

This is good stuff. I'm still trying to figure out if the dampers are the same between the 08 and 09.

[Big Sky WRX]

they fit the same, but are valved slightly differently- not as different as we first suspected (due to the increse in spring rates)- so I'd skip an 09/10 "upgrade" on a 08- not as much as an upgrade as one would have thought

the tops are firmer front and rear on the 09/10 however

[Big Sky WRX]

part #'s of interest

part #'s of interest for 08/09 WRX guys