Sorry, another class thread

[MR2_FTW]

OK I have tried and tried to figure out what class I belong in to no success. SCCA classing rules are so frakking complicated. If one of you could help once and for all that would be AWESOME.
1988 Supercharged MR2
Dunlop Direza DZ101 195/50/15F, 205/50/15R
MR2 Spyder stock wheels 15x6F, 15x6.5R

Suspension/chassis:
rear sway bar
rear strut tower bar
Koni yellow shock inserts (rebound adjustable)
TRD springs
front camber plates
polyurethane bushings
heim joint rear tie rods
heim joint/adjustable sway bar end links front and rear
Quaife quick ratio steering rack/pinion

Drivetrain:
aftermarket air filter, otherwise stock downstream of AFM.
polyurethane filled motor mounts
ARP head studs
sold brass shifter cable bushings
stainless clutch line

Brakes:
porterfield HP R4S street/autocross pads
NAPA oem replacement rotors
stainless lines
master cylinder brace

Misc other stuff:
aftermarket steering wheel (Momo Monte Carlo 320mm)
shifter drop plate
TRD shift knob


Now the kicker is the fact that I have a slightly larger crank pulley to get an extra 2psi of boost (10psi up from stock 8psi). I would like to not factor this in (I feel like 2 extra psi for 150rwhp on a 24 year old 1.6L should not have to be in the same class with 500hp Subaru's) and I am not trying to win any championships (obviously, look at my tires), but that is up to you guys of course.

Thank you for taking the time to look at this.

[blue06civic]

I'm pretty sure the pulley puts you in one of the SM classes.  Besides that, it seems like you could run one of the ST classes.  My view on classes is that they're not terribly important to get 100% right as long as you don't have an advantage over the other cars in that class.  My other thought is that PAX time doesn't matter until you want to compete for club trophies, and people should have a pretty good idea of other cars/drivers they want to be close to in raw time, regardless of class.

In SCCA you can run whatever class you want until someone complains.

[MR2_FTW]

So STC? Also, what is the street tire thing when registering?

[blue06civic]

STC seems fine off the top of my head.  The street tire index class is for people who are running street tires (140+ treadwear) in a class where race tires are allowed.  It just ensures all of their PAX times are printed together in the results.  The ST_ classes aren't eligible for it because their PAX already counts then running street tires.

[MR2_FTW]

So if I were to eventually run Star Specs it wouldn't change my class?

[blue06civic]

Since you're running Star Specs (or any 140+ treadwear tire) and your car is "eligible" for STC, you can run STC.  Nobody in STC, or any other ST class can run in the "X" (street tire index) class since the "X" categorization is meant to be a handicap for people running street tires in classes where R-compounds are legal.  In those classes (everything that's not ST), PAX assumes that they're running R-comps, so if they're running one of those classes on a street tire we give them the option to have their results printed next to all the other people running street tires in classes that permit race tires so as to not be comparing themselves with people running race tires.

The "X" categorization does not change anything other than where the results are displayed in the HTML file that gets posted.  Season points are still based on your PAX time, which does not change.

[MR2_FTW]

Just bought some Toyo Proxes R888's. I know this will put me into way higher class than I'm competitive in, but I don't care, I just want to see how fast I can get round the track. I assume this 100 tread wear rating tire puts me out of STC and into a street mod class of some sort?

[ccann26]

 looks like you may be able to do ESP class ? Or ASP if you have forced induction.