Frequently Asked Questions

Want to try Autocross for the first time? Don’t know where to start? Or are you a seasoned racer looking for the latest rule book or event prices?

Please see below for our list of frequently asked questions. If you still can’t find what you are looking for, head over to our Facebook group!

Club Events

Where is the Centralia Airport?

Centralia/James T. Field Memorial Aerodrome is located just west of Centralia ON. From London, Follow Highway 4 North up to Huron Park Rd in Centralia (There is a Malibu Restaurant at this intersection) Turn left. Head down the road unitl it ends, turn right on Concession Rd 2, turn left on Canada Ave. Address is 403 Canada Ave, Huron Park, ON N0M 1Y0. Gate entrance #2, the main entrance for New United Goderich.

How much are registration fees?

Event fees are $65 non-members *registered online* / $70 non-members *register at the track*

$50 members *registered online* / $55 members *register at the track*,  your membership basically pays for itself

Are food/gas/bathrooms available on site?

A Porta-Potty will be on site, and we may have a pizza run going for lunch. There is a variety store in Centralia, then a few options available in Exeter, north of the airport.

Can I fly a camera drone at the event?


Please feel free to use any GoPro or other action-style cams that can be mounted to your helmet/car. Regulations by our governing body do not permit camera drones at our events at this time.

What should I bring with me to an event?

Always bring sunscreen, sunglasses, water, snacks, umbrella, appropriate rain gear, tire pressure gauge, air pump, an extra litre of oil, and your drivers licence. We also recommend you bring your own Snell 2015 or better helmet, but we do usually have a few spare loaners if you don’t have your own.

A few nice to haves include a GoPro or other camera and a pencil and paper to take notes and write down advice.

Many dedicated competitors will bring their magnetic numbers, floor jack, separate tires, torque wrench, spare nuts/bolts, and brake fluid.

Rules and Regulations

2021 Rule Book

The 2021 rule book is available here. (PDF)

Other helpful quick reference sheets:

2020 Helmet Regulation

You will need to present your helmet to the registration tent to confirm it meets the current year standards for Canadian Regulations. You will receive a sticker that is valid for the rest of the calendar year for all WOSCA events. You will need to re-tech your helmet and get a new sticker from us every year.

Approved helmets for 2020:

•FIA 8860-2004
•FIA 8860-2010
•FIA 8859-2015
•Snell 2015 SA, or 2015 M
•Snell 2010 SA, 2010 SAH, or 2010 M
•SFI Foundation 31.1/2015
•SFI Foundation 31.1/2010
•ECE R22.05ECE 22.05 (expiry: ten years after the date of manufacture as noted on unaltered, helmet label)

****Please note SN2005 helmets are not allowed in Canadian competition but are allowed in the states.****

Your helmet must have one of these labels visible. The DOT standard (FMVSS 218) alone is not sufficient!

2020 PAX

First Timers

What is autocross?

Autocross is a low-cost grassroots motorsport discipline that allows almost anyone to enjoy the thrill of automotive competition in a safe, controlled, and legal environment.

An Autoslalom event consists of competitors driving through a ‘race course’ laid out using pylons on a large parking lot or other paved surface. Because the vehicles race independently of each other, at no time can there be contact with another competitor, thus reducing the risks considerably, and allowing the drivers to concentrate on threshold braking and precision cornering. Each run is electronically timed, and the fastest driver in each class is the winner. Click here for a great read on what Autocross is.

What kind of car do I need to have?

Almost any driver can participate in almost any car, no matter how old, the make, the model, or the modifications that have been done to the vehicle.  As long as the car meets certain safety standards (i.e. not dropping fluids, secured battery, wider than it is tall) autocross has a class for your car.

Each vehicle is handicapped based on several factors. For example, a Ferrari Enzo is not in the same class as a Toyota Camry. Modifications will also place vehicles in different classes with adjusted PAX values.

If you have questions about your class, head over to our Facebook group and ask for help classing your vehicle.

Can I just come and watch?

Normally spectators are always welcome, but due to the COVID19 Pandemic, our 2020 season will not be allowing spectators.

What class is my car in?

SCCA® Solo® has many categories divided into classes for vehicles. Those
categories include:


This category includes mass-produced, common vehicles that may be “daily drivers” (cars used for normal, everyday driving). Stock Category cars compete in their “factory” configuration with a minimal number of allowances (not requirements).

Street Touring®

This class is a fairly new class and is geared towards cars with common bolt-on modifications. Things like cold-air intakes, headers, lowering springs, etc.

Street Prepared

This is the original Solo® “street” class, sometimes called a “bolt-on” class. Any fuel and ignition system is allowed along with any suspension springs and shocks/struts as long as they are fitted into their original location. Things like turbo/superchargers must remain the same. There is no limit on wheel size or DOT tire sizes.

Street Modified

This is the top tier of the “street” classes. This class allows engine swaps as long as the engine is made by the same manufacturer as the car. You may also add turbo/superchargers, camshaft upgrades, and any suspension upgrades as long as it uses the factory attachment points.


This class is generally for non-street cars. Things like gutted interiors and racing slicks are a big give away. Most things are allowed in this class and are based on weight more than anything. Modified – these are usually special built competition vehicles and most of them resemble an open-wheel Indy car or a closed-wheel LeMans sports racer. DM and EM cars may have started life on the streets, but just about any engine, drive train, or suspension is permitted. Supercharged rotary engines and V-8 engines are seen in 1700-pound EM machines and powerful 4-cylinders are common in 1300-pound DM lightweights.

Do I need special competition tires?

No, any tires can be used. 200-tread wear tires are the limit for stock classes. While R compound race tires are typically the quickest and most sticky, today’s quality summer tires are often better than the R compound tires we used 10 years ago. Tire technology has advanced considerably over the years and we’re all better for it. Bridgestone RE71-R's are currently the hot tire at most events, though other manufacturers have created equally impressive 200-tread wear tires.

Do I need a helmet?

Yes, you need a proper fitting and approved helmet. We normally have loaner helmets, but due to COVID19, we are not offering loaner helmets.

Remember, all helmets you can buy in Ontario will have the DOT certification, but not all DOT helmets meet our required SNELL standards. Please see the section above on current-year helmet regulations before buying one!

How do I navigate the course?

We encourage drivers to arrive early enough to walk the course prior to the driver’s meeting. Feel free to take notes. A typical course walk takes 10 minutes for a parking lot course, but can be over 30 minutes for an airport based course. you can ask experienced drivers how to understand the nuances of a given course.

Normally there is an official course walk or parade lap after the morning drivers meeting, however, this has been suspended due to Covid-19 restrictions.

After the driver’s meeting, we do also have a quick meeting with any rookies/first timers to show you what the different pylon configurations mean, and cover a few extra safety details. Please ask questions if you have them!

If I'm having trouble navigating, or could use some coaching - is there someone to help me?

Our events are full of seasoned racers and instructors. We are typically wearing WOSCA shirts and some of us have magnetic numbers on our cars. We also usually answer when you shout “can someone help me?”

Normally, you can ask pretty much anyone if you can come along with them for a ride to understand the course, but due to Covid-19 restrictions, ride alongs are currently suspended.

How does scoring work?

All cars are classed according to their factory specs, and how modified your car is. Each class has what’s called a “PAX” factor which is a multiplier of less than 100% which is applied to your raw time based on what class you’re in. A fast driver in a slow car with a low PAX may not be the fastest in raw time but could win the event after everyone’s times are factored for their class. Modifying your car can (but doesn’t necessarily) make it faster in autocross. Some of the most competitive cars are completely stock aside from good tires!

How will this make me a better driver?

Competing in autocross can help you hone your driving skills. It’s a competition in the world of Motorsports that values agility, technique, and quick thinking. Autocross can help you improve your vision (looking farther ahead), learn how to keep your car balanced and controlled in a skid, and help you master precision braking. All of these skills transfer on to the roads when you find yourself in icy conditions, or having to make a quick maneuver to avoid an accident!