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Old 11-20-2018, 12:16 PM
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Part of that is also the design. Short tread depth, lower wear ratings, and much larger contact patches between rain channels.

Tires and alignments have definitely made the car much more different now than it used to be. Videos of my car from 2011/2012 on ZII's and such make a lot of things apparent.
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Old 11-20-2018, 12:27 PM
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Originally Posted by Abendschein View Post
Part of that is also the design. Short tread depth, lower wear ratings, and much larger contact patches between rain channels.

Tires and alignments have definitely made the car much more different now than it used to be. Videos of my car from 2011/2012 on ZII's and such make a lot of things apparent.
Oh yea, I was on Z2SS back in 2015...and my videos from back then...my hands were WAY busier than they are now.
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Old 11-21-2018, 06:41 AM
  #3453  
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MikeTyson, how is the balance with the 600lb/in F and 400lb/in R rates? What's your swaybar and alignment setup?

I'm coming from HPDE and Time Trials... at those events the car can be set up more loose since you're not transitioning as quickly as autocross. While I've been autocrossing for over a decade, the last half of a decade has focused on time attack. So i'm having to re-adjust the car, and the driving.


Time Attack Set-Up (this was a hair loose even for smooth track driving... i was going to go with a re-drilled front bar to tighten it some):

SUSPENSION & BRAKES
Fortune Auto 500s, 10k/7k Swift springs
OEM front bar (redrilled but need new adjustable end links)
Removed rear bar
Whiteline front offset UCA bushings
Hawk HPS pads

WHEELS & TIRES
17x9 +35 TRM FF10 wheels with 255/40/17 200-TW non-cheater street tires [DRY]
17x9 +48 Kosei K8R wheels with 245/40/17 Continental ExtremeContact Sport tires [WET]

ENGINE
Pineapple Racing engine standard rebuild
HKS Hi Power exhaust
AEM intake (need to modify to be STX legal...)
RX8Performance pulley kit
Versatuner engine tuning
Race Roots poly engine mounts
Aluminum undertray & improved sealing
Pettit Racing closed-loop coolant overflow system

2018 SETUP (time attack, too loose for autocross):
Ride height: 13.5” F, 13.75” R
Front camber: -2.75*
Front toe: zero
Rear camber: -2.3*
Rear toe: +1/16” in total (+1/32" per side)
Caster: Maxed, equal

For autocross, i've been thinking of dropping the rear spring rate and/or increasing the front, along with connecting the front bar to a stiffer redrilled setting...

REGARDING CAMBER, i have never run cheater 200TW tires. I plan to run the RE71R, and i've heard they wear heavily on the outside edges. How much camber is good for a modern STX RX8?
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Old 11-21-2018, 07:45 AM
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Regarding 245/40/17 versus on 255/40/17 on the allowed 17x9 wheels in STX, have you all found one option to be consistently faster, or better subjectively?
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Old 11-21-2018, 07:51 AM
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Regarding 245/40/17 versus on 255/40/17 on the allowed 17x9 wheels in STX, have you all found one option to be consistently faster, or better subjectively?
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Old 11-21-2018, 10:41 AM
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Originally Posted by hufflepuff View Post
MikeTyson, how is the balance with the 600lb/in F and 400lb/in R rates? What's your swaybar and alignment setup?

I'm coming from HPDE and Time Trials... at those events the car can be set up more loose since you're not transitioning as quickly as autocross. While I've been autocrossing for over a decade, the last half of a decade has focused on time attack. So i'm having to re-adjust the car, and the driving.

https://www.youtube.com/watch?v=gyxoXPsaUM4

Time Attack Set-Up (this was a hair loose even for smooth track driving... i was going to go with a re-drilled front bar to tighten it some):

SUSPENSION & BRAKES
Fortune Auto 500s, 10k/7k Swift springs
OEM front bar (redrilled but need new adjustable end links)
Removed rear bar
Whiteline front offset UCA bushings
Hawk HPS pads

WHEELS & TIRES
17x9 +35 TRM FF10 wheels with 255/40/17 200-TW non-cheater street tires [DRY]
17x9 +48 Kosei K8R wheels with 245/40/17 Continental ExtremeContact Sport tires [WET]

ENGINE
Pineapple Racing engine standard rebuild
HKS Hi Power exhaust
AEM intake (need to modify to be STX legal...)
RX8Performance pulley kit
Versatuner engine tuning
Race Roots poly engine mounts
Aluminum undertray & improved sealing
Pettit Racing closed-loop coolant overflow system

2018 SETUP (time attack, too loose for autocross):
Ride height: 13.5” F, 13.75” R
Front camber: -2.75*
Front toe: zero
Rear camber: -2.3*
Rear toe: +1/16” in total (+1/32" per side)
Caster: Maxed, equal

For autocross, i've been thinking of dropping the rear spring rate and/or increasing the front, along with connecting the front bar to a stiffer redrilled setting...

REGARDING CAMBER, i have never run cheater 200TW tires. I plan to run the RE71R, and i've heard they wear heavily on the outside edges. How much camber is good for a modern STX RX8?
My alignment (going from memory):

Ride height: 13.5” F, 13.5” R
Front camber: -2.6*
Front toe: zero
Rear camber: -1.6*
Rear toe: 1mm per side
Caster: Minimum, equal
Bars: MX5 front bar, stock rear bar

Its a balance I like. Nice and neutral in the sweeping sections, doesn't jump out in slaloms. It tends to rotate a little if there's any compression in the corner, or any elevation change. Every other person that has driven it has spun it..lol. I've ran it for 7 years now and never have...but I like that balance.

Like I was saying before, I'm sure there's some things I'm probably missing because I've tuned by feel and results from autox. I haven't really done much TNT with it.

I've only ran 255's.
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Old 11-21-2018, 05:15 PM
  #3457  
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Originally Posted by hufflepuff View Post
MikeTyson, how is the balance with the 600lb/in F and 400lb/in R rates? What's your swaybar and alignment setup?

I'm coming from HPDE and Time Trials... at those events the car can be set up more loose since you're not transitioning as quickly as autocross. While I've been autocrossing for over a decade, the last half of a decade has focused on time attack. So i'm having to re-adjust the car, and the driving.

https://www.youtube.com/watch?v=gyxoXPsaUM4

Time Attack Set-Up (this was a hair loose even for smooth track driving... i was going to go with a re-drilled front bar to tighten it some):

SUSPENSION & BRAKES
Fortune Auto 500s, 10k/7k Swift springs
OEM front bar (redrilled but need new adjustable end links)
Removed rear bar
Whiteline front offset UCA bushings
Hawk HPS pads

WHEELS & TIRES
17x9 +35 TRM FF10 wheels with 255/40/17 200-TW non-cheater street tires [DRY]
17x9 +48 Kosei K8R wheels with 245/40/17 Continental ExtremeContact Sport tires [WET]

ENGINE
Pineapple Racing engine standard rebuild
HKS Hi Power exhaust
AEM intake (need to modify to be STX legal...)
RX8Performance pulley kit
Versatuner engine tuning
Race Roots poly engine mounts
Aluminum undertray & improved sealing
Pettit Racing closed-loop coolant overflow system

2018 SETUP (time attack, too loose for autocross):
Ride height: 13.5 F, 13.75 R
Front camber: -2.75*
Front toe: zero
Rear camber: -2.3*
Rear toe: +1/16 in total (+1/32" per side)
Caster: Maxed, equal

For autocross, i've been thinking of dropping the rear spring rate and/or increasing the front, along with connecting the front bar to a stiffer redrilled setting...

REGARDING CAMBER, i have never run cheater 200TW tires. I plan to run the RE71R, and i've heard they wear heavily on the outside edges. How much camber is good for a modern STX RX8?
On the west coast cars (mine, Guy Ankeny's, and Steve O'Blenes) we are all between -3.5 and 4 degrees of camber. It usually comes down to tire choice. Bridgestones like camber, BFGs use a little less.
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Old 11-21-2018, 09:21 PM
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Originally Posted by hufflepuff View Post
Regarding 245/40/17 versus on 255/40/17 on the allowed 17x9 wheels in STX, have you all found one option to be consistently faster, or better subjectively?
255 on a 25" diameter is hard to beat. Just be early and it sends.
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Old 11-22-2018, 07:30 AM
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Originally Posted by RE-Vision View Post
On the west coast cars (mine, Guy Ankeny's, and Steve O'Blenes) we are all between -3.5 and 4 degrees of camber. It usually comes down to tire choice. Bridgestones like camber, BFGs use a little less.
WOW.

maybe -3.5 up front and around -3.0 rear for the rx8 then?
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Old 11-22-2018, 07:31 AM
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Originally Posted by Abendschein View Post
255 on a 25" diameter is hard to beat. Just be early and it sends.
that's what I was leaning towards. Thanks very much!! I feel like I'm getting a solid plan.
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Old 11-22-2018, 12:41 PM
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Originally Posted by hufflepuff View Post
WOW.

maybe -3.5 up front and around -3.0 rear for the rx8 then?
-3 in the rear seems excessive. Sounds very pushy.

​​​​​On the east coast there's a few of us atmorelike - 2.6/-2.7 in the rear.
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Old 11-22-2018, 08:52 PM
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Originally Posted by Abendschein View Post
-3 in the rear seems excessive. Sounds very pushy.

​​​​​On the east coast there's a few of us atmorelike - 2.6/-2.7 in the rear.
I run mostly on concrete, so that's why I run a little less in the rear. If I were mostly running on pavement, the first thing I'd do would be put in a little more camber. Anytime I do happen to run on pavement, its usually pretty free. WWWWeeeeeee
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Old 11-24-2018, 01:34 AM
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Originally Posted by Abendschein View Post
-3 in the rear seems excessive. Sounds very pushy.

​​​​​On the east coast there's a few of us atmorelike - 2.6/-2.7 in the rear.
I do believe that Steve's car is at -3 in the rear.
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Old 11-27-2018, 02:24 PM
  #3464  
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From CalClubs Autocross School 2 days ago. From L-R (O'Blenes, Me, Guy and Adrian)
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Old 11-28-2018, 01:57 PM
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From the Cal Club Autocross School Last Weekend. (O'Blenes, Me, Ankeny and Cardenas)
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