Suspension Tuning Question Options

[yeahmag]

At this past PCA event a fellow competitor was watching my car and mentioned that the front looks nice and planted, but the rear was wallowing around a bit. I'm considering adding the rear bar back on and upping the front anti-roll bar setting to balance the car out and settle the rear down. Is that the correct approach?

Tires: Kuhmo V710

Front:
21mm torsion
19mm sway - urethan bushings
Max caster/camber with stock plates
Stock rubber bushings in the rest of the front end
Turbo Tie Rods
Koni Sports (set full hard during autocross)

Rear
180lb springs
Full Urethane
Koni Sports (set full hard during autocross)
*NO* rear bar

-Aaron

[SirAndy]

Is that the correct approach?

Maybe ... (IMG:style_emoticons/default/biggrin.gif)

Yes if you have a limited slip.

No if you don't have a limited slip.


In my (limited) experience, adding a rear bar will help keeping the rear flat but also promote the inside wheel getting "light" in tight corners resulting in wheel-spin on cars without a limited slip.


If you don't have a limited slip, the rear body roll actually helps keeping the inner (light) wheel planted ...

(IMG:style_emoticons/default/popcorn[1].gif) Andy

PS: If you go with a limited slip and rear bar, it really helps getting the rear shock-towers tied into a full roll-cage to eliminate any body flex in that area.