Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB
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Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB (https://www.ft86club.com/forums/index.php)
-   Tracking / Autocross / HPDE / Drifting (https://www.ft86club.com/forums/forumdisplay.php?f=39)
-   -   Hankook RS3s = too much body roll. Suggestions? (https://www.ft86club.com/forums/showthread.php?t=32568)

Sev 04-02-2013 01:14 AM
Hankook RS3s = too much body roll. Suggestions?
 
Tracked my BRZ yesterday using Hankook RS3s 225/45/17; everything else stock.

The RS3s gave me a lot more grip than stock tires but introduced a lot of body roll that I wasn't used to getting and really threw me off. Felt like I was driving a heavier car.

My buddy really eliminated his Camero's body roll with sway bars but what worked for his car won't necessarily go as far on ours.

What's the best thing I can do to reduce body roll for our car? Thanks.

OmarGC 04-02-2013 01:16 AM
Lower COG, slightly higher spring rates help a ton.

If you want to go about it on the frugle route, H&R & Eibach have some quality springs for cheap. Also, sways will help like you stated.

edit: What class are you running in?

blkwrxwag 04-02-2013 01:23 AM
Strano front bar and Eibach Pro kit, plus camber bolts.

CSG David 04-02-2013 02:08 AM
Quote:
Originally Posted by Sev (Post 834990)
Tracked my BRZ yesterday using Hankook RS3s 225/45/17; everything else stock.

The RS3s gave me a lot more grip than stock tires but introduced a lot of body roll that I wasn't used to getting and really threw me off. Felt like I was driving a heavier car.

My buddy really eliminated his Camero's body roll with sway bars but what worked for his car won't necessarily go as far on ours.

What's the best thing I can do to reduce body roll for our car? Thanks.
Body roll can be controlled with sway bars and stiffer springs. Changing these parts does not necessarily change performance of the car despite the change in feel. Where did you run your car at?

Sev 04-02-2013 03:28 AM
Quote:
Originally Posted by OmarGC (Post 834993)
What class are you running in?
The only modification I've done is RS3s 225/45/17 on Enkei RPF1s. There isn't anything stopping me from further modification other than $ and complexity/skill. I'm new to tracking (TT but no competitions) and plan to do more as often as I can.

Does that help?

Quote:
Originally Posted by CSG David (Post 835080)
Body roll can be controlled with sway bars and stiffer springs. Changing these parts does not necessarily change performance of the car despite the change in feel. Where did you run your car at?
I ran at Streets of Willow Springs yesterday. I remember seeing the CSG BRZ there. Maybe I can get a ride one of these times? :thumbsup:

I'm positive that the biggest problem lies between steering wheel and seat so best bang for my buck would be a drivers school but I'd also like to get rid of the heavy body roll I experienced or is that something I'd be better off learning to deal with unless I'm willing to do a lot of modifications? Not as much fun as the go-cart-like experience I got from running completely stock. :burnrubber:


As for sways, I've read that other people here are only using front sway bars. (Robispec for example) Why is that?

D1cker 04-02-2013 03:55 AM
just drive a bit more for now, a car that rolls over is more forgiving and easier to learn with.

What was your best time at streets yesterday?

Sev 04-02-2013 09:12 AM
Quote:
Originally Posted by D1cker (Post 835205)
just drive a bit more for now, a car that rolls over is more forgiving and easier to learn with.

What was your best time at streets yesterday?

Thanks for the advice.

Best time was 1:35 (CW). Have trouble with turn 2 & 3 and with trying to double apex the bowl. Also I tend to coast before breaking rather than staying on the gas and breaking harder.

Ranatsu 04-02-2013 12:15 PM
Quote:
Originally Posted by Sev (Post 835176)
As for sways, I've read that other people here are only using front sway bars. (Robispec for example) Why is that?
Because of the way the stock rear differential works. If you lift one of the rear wheels you basically lose all power until that wheel gets traction again. Assuming traction control is off.

CSG Mike 04-02-2013 12:57 PM
Quote:
Originally Posted by Sev (Post 835176)
The only modification I've done is RS3s 225/45/17 on Enkei RPF1s. There isn't anything stopping me from further modification other than $ and complexity/skill. I'm new to tracking (TT but no competitions) and plan to do more as often as I can.

Does that help?



I ran at Streets of Willow Springs yesterday. I remember seeing the CSG BRZ there. Maybe I can get a ride one of these times? :thumbsup:

I'm positive that the biggest problem lies between steering wheel and seat so best bang for my buck would be a drivers school but I'd also like to get rid of the heavy body roll I experienced or is that something I'd be better off learning to deal with unless I'm willing to do a lot of modifications? Not as much fun as the go-cart-like experience I got from running completely stock. :burnrubber:


As for sways, I've read that other people here are only using front sway bars. (Robispec for example) Why is that?
All you need to do is ask :)

Robispec's suspension is NOTHING like stock, so that's an apples to oranges comparison.

We're still on stock sways. How's this for roll? This is also on 225/45/17 RS3 on RPF1. Car is only lowered 1.4 inches. :D

https://sphotos-a.xx.fbcdn.net/hphot...08763289_n.jpg

CSG Mike 04-02-2013 12:59 PM
Quote:
Originally Posted by Ranatsu (Post 835716)
Because of the way the stock rear differential works. If you lift one of the rear wheels you basically lose all power until that wheel gets traction again. Assuming traction control is off.
True, but I don't think I've seen anyone actually lift a rear wheel on street tires... please correct me if it's a common occurance that I just haven't observed at SoCal tracks.

Ranatsu 04-02-2013 01:03 PM
Quote:
Originally Posted by CSG Mike (Post 835823)
True, but I don't think I've seen anyone actually lift a rear wheel on street tires... please correct me if it's a common occurance that I just haven't observed at SoCal tracks.
I haven't in this car. On my STi with the stock springs and Cobb sway bars I could pick up the inside tire everyday driving to work, but thats a completely different animal.

Huehuecoyotl 04-02-2013 01:16 PM
youre on stock coils? and sways? Go to a minimum of an RCE yellow coil and a minimum of a strano sways and report back. I put my rcomps on the wifes car and felt the same way, too much traction

Dialing back to the direzzaV1 feels fine with oe coils and sways, fwiw
she smiling now!

blu_ 04-02-2013 01:30 PM
Are the people here who have done tires and stiffened the suspension still okay with the stock bushings? I would think those would be the next weak link... but am curious if people are noticing them.

CSG Mike 04-02-2013 01:50 PM
Quote:
Originally Posted by blu_ (Post 835907)
Are the people here who have done tires and stiffened the suspension still okay with the stock bushings? I would think those would be the next weak link... but am curious if people are noticing them.
We're still on stock bushings :)


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