Autox B Street Alignment Recommendations
03-29-2018, 08:47 AM
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Autox B Street Alignment Recommendations
Hi everyone. It will by my first year running my 05 S2000 at my local group. I recently purchased 245/40 Front & 255/40 Rear RE-71R's tires on my OEM wheels. Other than that, the car is completely stock. I'm looking for some recommendations for alignment settings. I pulled the following info from the Autocross FAQ but I was hoping some others would chime in with their numbers. I've only had a few autox events under my belt in a FWD car so I'm no expert by any means. Thanks!
2.1.3 ALIGNMENT
A proper alignment is important for autocrossing, and compared to the other changes you'll be making, a bargain at less than $100. Individual alignments vary, but the general consensus falls in the following ranges:
A proper alignment is important for autocrossing, and compared to the other changes you'll be making, a bargain at less than $100. Individual alignments vary, but the general consensus falls in the following ranges:
- Front toe - 0" to 1/8" total toe out
- Front camber - maximum available (generally between -1.5 to -1.8 degrees)
- Rear toe - 1/16" to 1/4" total toe in
- Rear camber - -0.2 to -0.5 degrees more than the front camber
03-29-2018, 11:07 AM
#2
I ran -2.1 front camber, 0 front toe, 5.8 front caster, -2.4 rear camber, 3/16" total toe in on rear.
I ran this last season when my AP2 was completely stock and it was great.
This season I am running a 30mm front bar and no rear bar, 225/45 and 255/40 Continental Extreme Sports, everything else is stock.
Edit: I had a chance to do some testing and tuning at the first event of the season. I played around with the rear alignment a little bit. With my current setup it was better with less toe in and less negative camber in the rear.
It will push if you’re not driving hard enough but if you are driving the car hard enough it has nice neutral handling and is very predictable.
After a few autox runs and reading other's suggestions, I am thinking of running the same negative camber front and rear (maybe a little less in the rear?) with zero toe all around when I get an alignment.
I ran this last season when my AP2 was completely stock and it was great.
This season I am running a 30mm front bar and no rear bar, 225/45 and 255/40 Continental Extreme Sports, everything else is stock.
Edit: I had a chance to do some testing and tuning at the first event of the season. I played around with the rear alignment a little bit. With my current setup it was better with less toe in and less negative camber in the rear.
It will push if you’re not driving hard enough but if you are driving the car hard enough it has nice neutral handling and is very predictable.
After a few autox runs and reading other's suggestions, I am thinking of running the same negative camber front and rear (maybe a little less in the rear?) with zero toe all around when I get an alignment.
Last edited by exigex; 04-15-2018 at 11:19 AM.
03-29-2018, 07:16 PM
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If you have a BIG front bar or remove the rear bar
max front negative camber
rear camber to match front
front and rear toe to zero
caster, stock is 6*, good enough
with factory bars:
setup rear camber to have .5 - 1.0* more negative than the front
Front toe: zero
rear toe 1/8 to 1/4" total toe
I will say my car handles well with thee setups at an autocross but understeers if you're not pushing/ driving fast enough. That's the compromise of tuning.
max front negative camber
rear camber to match front
front and rear toe to zero
caster, stock is 6*, good enough
with factory bars:
setup rear camber to have .5 - 1.0* more negative than the front
Front toe: zero
rear toe 1/8 to 1/4" total toe
I will say my car handles well with thee setups at an autocross but understeers if you're not pushing/ driving fast enough. That's the compromise of tuning.
03-29-2018, 07:25 PM
#4
If you have a BIG front bar or remove the rear bar
max front negative camber
rear camber to match front
front and rear toe to zero
caster, stock is 6*, good enough
with factory bars:
setup rear camber to have .5 - 1.0* more negative than the front
Front toe: zero
rear toe 1/8 to 1/4" total toe
I will say my car handles well with thee setups at an autocross but understeers if you're not pushing/ driving fast enough. That's the compromise of tuning.
max front negative camber
rear camber to match front
front and rear toe to zero
caster, stock is 6*, good enough
with factory bars:
setup rear camber to have .5 - 1.0* more negative than the front
Front toe: zero
rear toe 1/8 to 1/4" total toe
I will say my car handles well with thee setups at an autocross but understeers if you're not pushing/ driving fast enough. That's the compromise of tuning.
Different tires (e.g. BFG Rival S 1.5, Dunlop Direzza ZIII), different tire sizes (245/255, 245 square), different tire pressures, etc. can have an effect. On an older car, check bushings and engine/trans mounts.
One constant, maximum negative camber in the front.
03-30-2018, 04:27 AM
#5
I run ~1/16" - 3/32" total rear toe (0.15° to 0.20° total). 1/4" total rear toe was a total disaster for my car's handling (street and track), and for rear tire life. I wouldn't recommend more than ~1/8" total rear toe for any usage. I don't autoX, but I'd think that minimal rear toe would be a must for turn-in even more so than for track work.
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