if you are a serious
motorhead, a trip
through the paddock
at an event can be
a treat due to the
wide variety of
want to bump
your tire pressures
up from what you
use on the street.
with a similar
car to give you a
if all else fails,
make sure your
tires are inflated
to the auto
or front-wheel-drive cars, you
might want to
add a couple psi
just to be safe.
You might even want to
venture to the Tire Rack
Championships to test
yourself against the best”
two-day events that attract
competitors from across the
country. Eventually, you might even
want to venture to the Tire Rack
Solo National Championships to test
yourself against the best. Currently
being held in Lincoln, Neb., this
event sees some 1,200 of the best
autocrossers in the nation battle
for SCCA’s most coveted title:
Whatever your level of
commitment, Solo can be fun and
challenging, and it’s almost
guaranteed to make you a better
driver, even on the street.
Knowing the basic rules for the classes
will help determine what class your car
competes in. If you already have a
modified car, it may not fit neatly into
one of the categories – but initially, that
doesn’t matter. It will take a couple of
events just to get into the swing of Solo
events. Later, you may want to modify
your car to optimize it for the category.
After a few events and after talking to
competitors, weigh the rules and
decide what suits you best.
In the Stock classes, performance
shocks are allowed, you can make one
aftermarket swaybar change, the
exhaust can be modified after the
catalytic converter, and the use of any
DOT-legal tires is allowed. Wheels must
remain the same size as stock.
Street Touring is designed to
accommodate cars with common,
bolt-on modifications, such as different
suspension parts and cold-air intakes.
All tires must have a tread wear rating
of 140 or above.
This class takes things further than Street
Touring. There are no limits on wheel or
tire size, and there are several other
modifications that go well beyond
those in Street Touring – like the use of
DOT-legal R-compound tires.
Street Modified allows engine swaps
(within the same manufacturer), the addition
of forced induction, and any suspension as
long as it uses the same attachment points.
This is also the wildest of the classes that runs
on DOT-approved tires.
Prepared moves you into pure racing
machinery. Prepared cars usually have no
interiors, racing slicks, and may even be
tubeframe cars with fiberglass bodies.
Modified is everything from a pure,
purpose-built racecar such as formula cars
and sports racers to cars that started out as
production vehicles but may have different
engines, heavily modified bodywork, and
There are karts for adults and karts for kids.
Kart Modified are the 125cc shifter karts for
adults. Formula Junior is for kids as young as
8, allowing them to get a taste of Solo
competition long before they get their
Some regions may implement their own
classes, such as vintage classes for older
cars and even beginner or rookie classes for
new competitors. Check your local region’s
Website for more information.