A long read for those who dare. Setting up the DD for best tire wear and MPG. I drive allot!
In another thread I posed the question about track width as I saw my rear wheels were pointed just inside of the front wheels tread when front wheels were straight ahead. Axel/Track width; Front vs Rear. Is the Front Wider than the back?
Seeings that I hadnít seen the track width listed I was hoping the front was wider but itís not and I know all my wheels are the same width and offset. From this, I know the TOE is toed Ėin based upon how it drives. My guess is the REAR is more at fault than the front.
Here is some support evidence:
1) Owners manual lists the track width as being the same front and rear.
2) Sighting down sidewall of Rear tires they are equally aimed inward on the front wheels tire tread.
3) The car rolls forward easier than it does backwards (by hand pushing).
4) The car coasts further when its wet out than it does when it dry out. Tires slip easier in the wet.
5) When driving and the rear end (either one side or both) hits a slippery spot, I feel the car nudge over.
Those are some tell tail signs that it needs the rear alignment corrected. From that I have this question: For a daily driver with 18Ē 225/40 tires running -0.75 deg camber (Rear), what is the ideal toe-in that counteracts the Negative camber but isnít so Toed-in so as to scrub the tires or impair the MPG?
Also, car is new to me as of 2012-09-01 with NEW tires; they still had tits on them when I bought it. Mostly highway miles but also occasional spirited runs into the twisties!
Iím currently showing wear on the front and rears in this manor: 0 = no wear / 5 = Extreme wear
Fronts inner = 3.5, middle =0, outer = 1.5 Toe and camber are unknown at this point. Pressure was 36PSI. Corrected to 41 psi.
Rear inner = 2, middle =0, outer = 1 Toe and camber are unknown at this point. Pressure was 34PSI. Corrected to 37 psi.
I string aligned my 95 Camry which has near 0.0 deg Camber on both axles using a string and tape measure setting the rear toe to Zero and the Front Toe to +1/16 and got 65,000 from a set of 225/50R17s. The 6 has negative camber at both ends and likely needs a little toe-in to offset this.
Also, does anyone know what size the rear adjusting sleeve and Jamb nuts are for making Toe-Adjustments?
I'll want it tighter than the +/- setting they give but will ADJUST AS NEEDED based upon Tire Wear observed!
3.0 V6 5DHB
Left to right wheel well height within 10mm (0.40")
Front Camber: -0.17 deg +/-1.0 deg
Front Caster: 3.40 deg +/-1.0 deg
Front Total Toe Tire: 2.0 mm +/-4.0 mm (0.08" +/-0.16")
Front Total Toe RIM: 1.4 mm +/-2.8 mm (0.06" +/-0.12")
Front Toe Adjustment NOTE: 1 revolution = 0 deg 36' ~ 0.24" at the wheel
Front Toe jamb nut tq: 51 - 72 Ft/lbs
Rear Camber: -1.08 deg +/-1.0 deg (I'll be shooting for -0.75 deg
Rear Total Toe Tire: 2.0 mm +/-4.0 mm (0.08" +/-0.16")
Rear Total Toe RIM: 1.4 mm +/-2.8 mm (0.06" +/-0.12")
Rear Toe Adjustment NOTE: 1 revolution = 0 deg 43' ~ 0.28" at the wheel
Rear Cam nut Torque: 64 - 86 Ft/lbs
Rear Toe jamb nut tq: 51 - 72 Ft/lbs
Also, what tire pressure are people using front and rear for 225/40R18 on 18 X 8"??
As said, until alignment is fixed, 41psi Front, 37 PSI rear based upon wear. No observable change in DD from pressure bump.
Thanks in advance!
< Easier to find my threads!!