2018 OBCC PAX

[Brain]

Here are the PAX numbers we will be using this year. Anything with a "t" indicates a class that would normally be on race tires and I've calculated a modifier. If there's no "t" then they are the real PAX numbers.

***Adjustments to the street tire pax modifier (anything with a "t") are still possible until we get some input and/or run a few events***

Open to discussion/criticism/input......yes - I know nobody really cares

STREET TIRE MODIFIER
SM/SP 0.982
CP/DP/EP/FP 0.980
XP/MOD 0.970

am 1.000
bm 0.956
cm 0.890
dm 0.895
em 0.894
fm 0.904

xp 0.884
bp 0.860
cp 0.847
dp 0.858
ep 0.850
fp 0.863

ssm 0.871
sm 0.853
smf 0.839

ssr 0.838

ssp 0.852
asp 0.848
bsp 0.846
csp 0.857
dsp 0.835
esp 0.828
fsp 0.819

hcr 0.812

ss 0.817
as 0.814
bs 0.808
cs 0.805
ds 0.794
es 0.787
fs 0.797
gs 0.786
hs 0.781
hcs 0.791

stu 0.824
str 0.823
stp 0.815
stx 0.813
sth 0.811
sts 0.810
ssc 0.806

cam-c 0.816
cam-s 0.831
cam-t 0.807


tdm 0.868
tem 0.867

txp 0.857

tcp 0.830
tdp 0.841
tep 0.833
tfp 0.846

tssm 0.855
tsm 0.838
tsmf 0.824

tssp 0.837
tasp 0.833
tbsp 0.831
tcsp 0.842
tdsp 0.820
tesp 0.813
tfsp 0.804

[baiiva71]

Im not sure how to understand it still XD

[solorex]

Cool. Looking at my oil pan last night, I think I will be running my street tires in SMF at the lot from now on. Yikes...

[Brain]

Im not sure how to understand it still XD

Basically PAX is a method of being able to compare or equalize all cars. For cars like mine or yours that are in the slowest class (H-Street) it's not realistic to think we could win on raw time. PAX adjusts all time proportionately to allow comparison between classes.

Here's the official blurb....

This Index was developed by Rick Ruth and reflects study of results from well over 500 nationwide Solo events including, the Tire Rack® Solo National Championships, National Tour, Alabama Region, Arkansas Region, Atlanta Region, Chicago Region, California Sports Car Club, Central Florida Region, Equipe Rapide (Florida & Texas), Great Lakes Solo Series, Hawaii Region, Houston Region, Midwest Divisional Series, Milwaukee Region, New England Region, Northwest Region, Northern New Jersey Region, Oregon Region, Philadelphia Region, Rocky Mountain Series, San Francisco Region, San Diego Region, South Jersey Region, St. Louis Region, Tri-State Sports Car Council, Texas Region, Washington DC Region, Wisconsin Autocrossers Inc., and many, many others.

The "Street Tire PAX" is something we use to adjust the classes that would normally be on race tires. It's calculated by me based on the "real" PAX numbers. So for instance - Tyson's CRX is in SMF which normally allows the use of R-Compound tires. R-Compunds are at least 1 second faster than street tires. If he chooses to run street tires then the Street Tire PAX adjustment takes his regular PAX and adjusts it down to account for the slower tires.

Make sense? Probably not - you are not alone

Just drive fast - magic math will tell us who won

[solorex]

Just drive fast - magic math will tell us who won

Yes basically this. Haha

[SkinnyG]

If my Pontiac Firefly was stock, I'd run in H/Stock, and my 60s run gets a PAX "handicap" applied to it, so it counts as a (60 x 0.781) 46.86s run.

But my Firefly is not stock, and now runs in E/Mod. Let's say I run a 53s run in it. The PAX is applied, and my run counts as a (53 x .89) 47.38.

Not fast enough, to beat a stock Firefly. I'd actually have to run a 52 to win. Which makes sense: you -should- be faster in a faster car, but quite a bit faster. PAX is an attempt at putting it all on a level playing field. If the E/Mod Firefly could only pull off a 59 to the stock Firefly's 60, I suck. I anticipate sucking a lot, actually ("you already do, G, you already do").

(Veteran Tip: The only way to win PAX is in a stock class car. Unless you're an alien.)

[Brain]

(Veteran Tip: The only way to win PAX is in a stock class car. Unless you're an alien.)

No....it's just really hard to win top pax in a Mod car on a small lot

I actually just checked because I was curious - looks like Kelowna top pax last year was roughly 50/50 between Street and Street Touring.

A-Mod Greg - you know you want to......everything else is just a compromise

[solorex]

No....it's just really hard to win top pax in a Mod car on a small lot

Pretty much...

[SkinnyG]

I've never been an alien.

But I do have a radio collar and an ear tag.....