Ideal ride height for best suspension geometry? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Hachi86Roku · 11-18-2013, 04:58 PM

Hi, I recently bought a set of coilovers and I am very confused on how to setup my ride height for proper performance at the track and for autocross. Right now I am at -1.5" front and -1.75" rear, and I feel that is way too low since at this height the rear lca is pointing up and that the camber can only go to -2.0 max even with adjustable lca. For Next season I am looking to raise the ride height to get -1.5 rear camber since i dont seem to be using all the Tire at the rear when i went for a track day.

do you guys have any advice in what is the perfect ride height to achieve good suspension geo??

CSG Mike · 11-18-2013, 05:00 PM

Stock height is ideal for geometry.

How much does the actual geometry matter? Well.... we don't run any correction.

7thgear · 11-18-2013, 05:14 PM

Quote:

Originally Posted by CSG Mike

Stock height is ideal for geometry.

How much does the actual geometry matter? Well.... we don't run any correction.

why not?

rice_classic · 11-18-2013, 05:35 PM

Quote:

Originally Posted by CSG Mike

Stock height is ideal for geometry.

I can't imagine the contrary to this would readily be found.

CSG Mike · 11-18-2013, 05:54 PM

Quote:

Originally Posted by 7thgear

why not?

Diminishing ROI, and we don't really have the money to dedicate to experimenting with geometry...

7thgear · 11-18-2013, 06:46 PM

Quote:

Originally Posted by CSG Mike

Diminishing ROI, and we don't really have the money to dedicate to experimenting with geometry...

but it costs nothing to just raise to OEM using existing coilovers..

CSG Mike · 11-18-2013, 06:52 PM

Quote:

Originally Posted by 7thgear

but it costs nothing to just raise to OEM using existing coilovers..

Except we'd lose all droop travel... and our coilovers aren't capable of going that high to begin with

SubiePig · 11-18-2013, 07:02 PM

http://www.ft86club.com/forums/showthread.php?t=10643

Post 11

Racecomp Engineering · 11-19-2013, 08:46 AM

There are a lot of trade-offs.

You're making a compromise with suspension geometry, travel, and center of gravity.

In some cases (CSG for example) running pretty low with less than ideal geometry but a really low center of gravity works well since they are running fairly high spring rates and a good amount of camber. And I suppose they don't need to clear driveways and all that.

With softer rates, a higher ride height might be more advantageous.

- Andy

11-18-2013, 04:58 PM	#1
Hachi86Roku Member Join Date: Sep 2013 Drives: 2013 Scion FR-S Location: West Lafayette, Indiana Posts: 37 Thanks: 2 Thanked 11 Times in 9 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Ideal ride height for best suspension geometry? Hi, I recently bought a set of coilovers and I am very confused on how to setup my ride height for proper performance at the track and for autocross. Right now I am at -1.5" front and -1.75" rear, and I feel that is way too low since at this height the rear lca is pointing up and that the camber can only go to -2.0 max even with adjustable lca. For Next season I am looking to raise the ride height to get -1.5 rear camber since i dont seem to be using all the Tire at the rear when i went for a track day. do you guys have any advice in what is the perfect ride height to achieve good suspension geo?? __________________ STX Whiteout Build Thread http://www.ft86club.com/forums/showthread.php?t=47980 Anybody in the West Lafayette, IN area pm me

11-18-2013, 07:02 PM	#8
SubiePig Senior Member Join Date: Apr 2013 Drives: -'02 PSM WRX, '94 Miata, '13 BRZ Location: Lafayette, Louisiana Posts: 438 Thanks: 188 Thanked 155 Times in 112 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	http://www.ft86club.com/forums/showthread.php?t=10643 Post 11 __________________ Sponsered by:Chasebays/Corr Performance Tuning/KartBoy/Bad Panda Motorsports/Racer-X Fabrication STX Build thread 14th/67 SCCA Nationals (2014)

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11-18-2013, 05:00 PM	#2
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,562 Thanks: 8,942 Thanked 14,211 Times in 6,854 Posts Mentioned: 970 Post(s) Tagged: 14 Thread(s)	Stock height is ideal for geometry. How much does the actual geometry matter? Well.... we don't run any correction.

11-19-2013, 08:46 AM	#9
Racecomp Engineering Join Date: Nov 2011 Drives: 2016 BRZ, 2012 Paris Di2 & 2018 STI Location: Severn, MD Posts: 5,517 Thanks: 3,541 Thanked 7,412 Times in 3,032 Posts Mentioned: 310 Post(s) Tagged: 9 Thread(s)	There are a lot of trade-offs. You're making a compromise with suspension geometry, travel, and center of gravity. In some cases (CSG for example) running pretty low with less than ideal geometry but a really low center of gravity works well since they are running fairly high spring rates and a good amount of camber. And I suppose they don't need to clear driveways and all that. With softer rates, a higher ride height might be more advantageous. - Andy

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