Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - No front anti-sway bar=a better ride

Wepeel · 04-17-2015, 01:33 PM

Isn't it more useful to look at spring and bar rates in terms of frequency?

Stock BRZ has a front wheel frequency in roll (spring+bar) of about 2.4Hz. Rear in roll is 1.92 Hz.

Stock FRS as a front wheel frequency in roll of about 2.3 Hz. Rear 1.97 Hz.

Ratio of front:rear wheel freq in roll is 1.24 for BRZ, 1.15 FRS (>1 indicates front biased, <1 indicates rear biased).

I can't make any conclusions about track use, but I know the fastest autocross STX and CS twins in the country are running ratios more in the 1.4-1.5 range, so quite a bit more front-biased than stock.

04-17-2015, 01:33 PM	#141
Wepeel Senior Member Join Date: May 2012 Drives: '13 BRZ Ltd Location: PA Posts: 458 Thanks: 265 Thanked 230 Times in 117 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Isn't it more useful to look at spring and bar rates in terms of frequency? Stock BRZ has a front wheel frequency in roll (spring+bar) of about 2.4Hz. Rear in roll is 1.92 Hz. Stock FRS as a front wheel frequency in roll of about 2.3 Hz. Rear 1.97 Hz. Ratio of front:rear wheel freq in roll is 1.24 for BRZ, 1.15 FRS (>1 indicates front biased, <1 indicates rear biased). I can't make any conclusions about track use, but I know the fastest autocross STX and CS twins in the country are running ratios more in the 1.4-1.5 range, so quite a bit more front-biased than stock.