Quote:
Originally Posted by filip00
Bringing this up from ashes - I dunno, I think it makes more sense to continue in one place and gather knowledge, than to just open a new thread. Hope you guys agree.
So, my question... Is there any downside to running both front and rear stiff anti roll bars?
I just installed front whiteline rollbar and out of curiousity, I put both it, and my rear ARB (also whitelines) to their stiffest settings. That is paired with the KW V3 suspension, compression on a bit stiffer setting, rebound on softer. Factory tyre dimensions.
I drove around 60km of open road today, along with various roundabouts (tiny and large ones), trying out the limit, sliding a bit, doing a few powerslides to see whether I'll have snappy back or not. And to be honest, the car drives really well. I'm not sure if that's placebo, am I maybe not dialed in today, but I have a feeling like it's even better than before.
There is practically no body roll in the corner, the car is ridiculously flat, and the ride is a bit stiffer, but not harsh. When driving a medium speed corner and going too fast, if a bit on the throttle, the car wants to slightly understeer, but if I overdo it a lot, then it's gonna oversteer. Kinda reminds me of how first gen BMW M4 handle.
I'm thinking now - am I overlooking something? Maybe I'm misjudging the car and maybe there's a downside I don't see yet? I appreciate any comments.
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Im no expert and I have limited experience with actually trying different suspension setups, but this is how I’d explain it.
The total stiffness of the ARBs in the car isn’t as important as the relative ratio of stiffness between front and rear ARBs. ARBs are a tool to fine tune the understeer/oversteer characteristics.
Remember that ARBs reduce body roll, helping keep the tires in an appropriate camber window/range, BUT ALSO reduce grip at the axle which they’re installed because they put additional force on the outside tire. That’s how they reduce the vehicle’s roll.
Therefore, adding just a stiffer rear ARB to your current setup will increase oversteer compared to how your car drives without the stiffer rear ARB. This may make the car easier to rotate, or suit your driving preferences, or instead make it uncontrollably loose in the rear.
Long story short, ARBs are tuning tools. If you like how it feels with the stiffer rear ARB, keep it on!
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