#33595 T5 Rules Feedback

following items: TIRE SIZES, RIM WIDTHS, SPRINGS, ANTI-ROLL BAR(S), and PERFORMANCE EQUIPMENT. In the case of the
foregoing exceptions, the B-Spec these Competition Rules will have priority.
These specifications reflect the best information available at the time of publication. Any error found in
this edition will be updated when reliable specifications are available from the manufacturer/manufacturer
distributor or other sources recognized by SCCA®, Inc.
A. Definition
The B-Spec and C-Spec CATEGORY categories shall be considered primarily as a form for the membership to race street stock
automobiles. Eligibility of cars may be discontinued at any time, for any reason other than competitive stature. The burden of
proof lies upon any participant seeking action against another participant.
NOTE: A Shop/Service Manual or its equivalent for the specific make, model, and year of automobile is required to be in the
possession of each entrant. Manufacturer Shop/Service Manuals may come in the form of printed material, microfiche, CD, DVD,
and/or Internet access to manufacturer website databases. It is the responsibility of the competitor to provide the electronic
device capable of accessing the data for compliance verification. If Manufacturer Shop/Service Manuals are not available, then
the competitor shall have a copy of the official SCCA® Vehicle Technical Sheet (VTS) with them at every event and shall present it
for reference when officially requested. The manual is intended to aid SCCA® Technical Scrutineers in identifying parts and the
configuration of the automobile. Overhaul procedures that in the slightest way would increase performance are not to be
utilized (e.g., milled heads/blocks, porting, etc.). Blueprinting and balancing are inconsistent with the philosophy of this class and
are not permitted.
B. Automobile Eligibility
Only those cars listed on spec lines are eligible to compete. Cars classified will be approved by EPA and DOT for sale in the
United States and by Environment Canada for sale in Canada. They shall be models available to the general public for purchase.
Additions and deletions of automobiles shall be at the discretion of the SCCA®. The vehicle identification number (VIN) shall
correspond with the model automobile classified. At least one VIN plate or stamping shall remain in place on the dashboard or
chassis that corresponds with the model automobile classified.
C. Classification
Classifications of automobiles eligible for competition will be reviewed on an annual basis and will be effective as of January 1st.
D. Technical and Safety Items
The following represent the only safety items and modifications permitted and required on automobiles involved in B Spec and
C-Spec competition. Cars must meet comply with the GCR. The addition of safety items not specifically listed is not permitted.
No permitted component/modification shall additionally perform a prohibited function.
1. Roll cages shall be contained entirely within the driver/passenger compartment and must comply with GCR Section 9.4, Roll
Cages for GT and Production Based Cars.
2. Installation of a fire extinguisher or fire system as specified in GCR Section 9.3, Fire System.
3. Installation of a safety harness system as specified in GCR Section 9.3, Driver’s Restraint System.
4. All cars shall run with both front door windows fully open (down) if equipped, and shall have a driver’s side window safety net
per GCR Section 9.3, Window Safety Nets. Any cars where a window safety net cannot be installed, arm restraints shall be used.
Arm restraints are not an acceptable substitute for window nets in other cars. Window safety nets shall be mounted in such a
manner to provide protection in the event the driver’s door opens. Rear windows shall be run in the closed (up) position.
5. Passive restraint systems shall be deactivated.*
6. Air bag systems shall be disarmed and may be removed.* If so equipped, the rolling door lock mechanism may be deactivated
by unplugging the components.
7. The driver’s seat (only) shall be replaced with a one-piece, bucket-type race seat. Standard seat tracks/brackets may be
modified, reinforced, and/or removed to facilitate replacement mountings provided they perform no other function.
8. Steering lock mechanisms may be removed or disabled.
9. An electrical master switch may be installed.
*If car is used on public roads, these items should be replaced, reactivated, rearmed, etc. when not in
competition.
E. Vehicle Preparation
The following represents the only items authorized in the preparation of a vehicle for B-Spec and C-Spec competition other than
safety items as required in Section 9.1.7.D, Technical and Safety Items. Modifications shall not be made unless specifically
authorized herein. No permitted component/modification shall additionally perform a prohibited function.
1. Appearance shall be neat and clean. Automobiles that are dirty either externally or in the engine or passenger compartments,
or that show bodywork damage or that are partially or totally in primer, or that do not bear the prescribed identification marks
shall not be approved for competition. Vehicles may be painted any color(s).
2. Towing eyes per GCR Section 9.3, Towing Eyes, shall be fitted.
3. Hubcaps, wheel trim rings, jack, and tools shall be removed.
4. All mud flaps shall be removed.
5. Spare wheels and tires may be removed. Spare tire covers and trunk mats and/or trunk carpeting shall be removed if they
present a hazard as a loose flying or flapping object.
6. All adjustments shall be at the manufacturer’s specification and/or within the manufacturer’s specified tolerances unless they
are specifically allowed in the GCR (example camber angle).
7. Tires:
a. Tires shall be Hankook 205/50R15 C51 or Hankook 200/580R15 Z217. No mixing of wet and dry tires on the same car. Tires
must be run unmodified.
b. When using the wet tire, all cars get a 0.2” lower ride height allowance due to smaller radius of the wet tire.
8. Wheels: Required wheel/rim diameter is fifteen inches (15”). Maximum wheel/rim width is seven inches (7”). Minimum
Wheel/rim weight shall be 13 lbs. All wheels shall be one-piece metal castings or metal two piece welded. All four wheels must
be the same dimensional offset. Aftermarket wheel studs and/or wheel bolts are allowed. Wheel bolts may be replaced with
studs and nuts. Wheel spacers are allowed, the same thickness spacer must be used on all four corners.
Wheels are permitted any offset provided the tire tread (that portion of the tire that contacts the ground) does not protrude
beyond the fender opening when viewed from the top perpendicular to the ground.
9. Radio/stereo audio equipment and air conditioning refrigerant systems are the only options permitted and may be non-
manufacturer, standard equipment. Two way radios may be used. Hand controls are allowed in those instances where the driver
can demonstrate the physical need for them. Removal of rear window wipers and wiper motor is allowed.
10. Fuel, coolant, oil fluid hoses and clamps, oil filters, fuel filters, and belts (fan, alternator, etc.) may be substituted with others
of equivalent manufacturer’s specifications.
11. Brake fluid: May be substituted with other equivalent manufacturer’s specification.
12. Lubricants: Lubricants may be substituted with any lubricant. Additives are unrestricted.
13. Spark Plugs: Authorized spark plugs listed in spark plug manufacturer’s application charts, owner’s manual, manufacturer’s
shop/service manual, or equivalent justified by one cross reference chart. Use of resistor- or non resistor spark plug allowed.
14. “Special performance” specifications from the manufacturer that go beyond those listed on a specification line for a car will
not be considered valid.
Any manufacturer determined to be supplying false specifications to competitors or to SCCA will be advised that the
specifications shall be withdrawn and/or the eligibility of the car(s) involved will be terminated. The SCCA® Club Racing Board
(CRB) is authorized to implement these terminations on an immediate basis without Board of Directors (BoD) approval. In the
case of service circulars, recalls, etc., the burden of proof of validity will be upon the competitor.
15. Ride height: Minimum ride height is six (6) inches, to be measured without driver at the lowest point of the rocker panels,
but not to include welded seams or fasteners. A vehicle may have a ride height listed in the spec line, the competitor must
conform to the spec line.
16. Batteries may be replaced with those of alternate manufacture provided they are of similar amp hour (Ah) capacity and
weight. Battery must remain in stock location. Additional hold-down brackets are allowed.
17. Weight: The minimum weight as listed on the B Spec and C-Spec line is with driver and ballast may be added to meet the
listed minimum weight. Refer to section 9.3. Ballast, for placement of the ballast. If a cool suit system is utilized, the cool suit
system shall be weighed with the car as it came off the track.
A. The ballast shall be in segments no lighter than ten (10) pounds and no heavier than fifty (50) pounds.
B. Each segment shall be fastened with a minimum of two (2) one-half inch (1/2”) bolts and positive lock nuts of SAE Grade
5/Metric 8.8 or better, and shall utilize large diameter, load distributing washers.
18. Fuel: Only the fuel type specified by the owner’s or manufacturer’s shop/service manual may be used. Refer to GCR Section
9.3, Fuel, for permitted fuel specifications.
19. Removal of Air Conditioning System: The manufacturer’s or aftermarket air conditioning system may be removed. Items that
serve a dual purpose, such as the alternator/air conditioning compressor bracket, may not be substituted. Idler pulleys and belts
may be substituted as needed when compressor is removed.
20. Removal of radio and speaker components is permitted. Removal of horn and cruise control system is permitted.
21. A radiator screen of minimum one-fourth inch (1/4”) mesh may be added in front of the radiator and contained within the
bodywork.
22. Air filter elements may be substituted with other air filters of equivalent specifications and fit in the standard location with
no modifications. The filter element must be substantiated by a minimum of one (1) manufacturer cross-reference for specific
vehicle application.
23. Any brake pad or lining may be used. Metal or plastic dust shields may be removed or modified by removing material.
24. Standard replacement brake rotors/drums may be obtained from sources other than the original manufacturer provided
they are the exact equivalent.
25. The Club Racing Board may approve the use of automatic transmissions and/or hand controls on a case-by-case basis.
26. Interior mirror(s) may be replaced with a multi-panel type mirror, but shall not extend beyond the confines of the interior.
27. Only OE catalyst are permitted. The exhaust system downstream of the primary catalyst may be replaced provided:
A. Said replacement system retains the same original configuration, e.g., routing, single, dual, etc.
B. The system exits from the body in the same approximate location(s) as the original. When an original equipment single
exhaust system is cosmetically split into dual outlets, it is permitted to continue as a single system provided it exits in
approximately the same location as one of the originals.
C. The system meets all appropriate event-specific sound level requirements.
D. All oxygen sensors must be intact and in stock location.
E. Primary catalytic converter may not be modified in any way.
F . The Mazda 2, Fiat 500, 2007-10 Mini Cooper all may remove the primary cat/exhaust manifold to install their approved
header. All oxygen sensors must be maintained. The original heat shields or heat wrap may be used to insulate the replacement
header from objects they come close to.
28. Aftermarket steering wheels, and their required mounting modifications, are permitted. Removable steering wheels are
permitted.
29. Lap Timing and Data Acquisition Devices that perform no function other than to relay lap times to the driver (Longacre Hot
Lap, Intercomp Lap Timer, etc.) are permitted, along with the required mounting hardware and connections. Stand-alone data
acquisition systems (GPS or accelerometer-based) are allowed. One connection from the OBD2 port to the stand-alone data
acquisition system is permitted. No additional sensors may be added and the data acquisition system must not tie into the
vehicle electronics in any other manner beyond this allowance. The SCCA may install a standalone data box in a competitor’s car
at any time. Refusal of the installation of the data box will result in disqualification.
Analog (needle type) gauges for oil pressure, oil temp and water temp may be added as long as they are not tied into the
vehicles ECU in any way. Stand alone shift lights may be added.
30. Sunroofs, Targa tops, and T-tops are only permitted if installed by the manufacturer of the vehicle. If installed they must be
retained in the closed position and securely bolted in place unless the operating rails adequately secure the panel. Glass panels
are permitted. Glass panels may be replaced with a ferrous metal panel. Components (motors, cables, rails) may be removed
provided the panel is securely retained.
31. Hatchback “privacy covers” must be completely removed.
32. Cosmetic plastic engine covers may be removed.
33. Original brake and clutch hoses may be replaced by braided stainless steel brake lines and clutch lines.
34. Interiors may be removed including seats, seat brackets, carpet, carpet padding, rear door panels, OEM seat belts, interior
trim, and headliners. Front door window glass, front window operating mechanism, inner door trim panel, armrest, map
pockets, wiring harnesses for front door locks, power mirrors, seat wiring, etc., and inside front door latch/lock operating
mechanism may be removed. Original radio/ stereo audio equipment and air conditioner refrigerant systems may be removed.
Heater cores, and hoses, must remain except duct work under seats. Duct work behind the dash may be trimmed but not
removed to allow for roll cage installation.
35. Maximum 3.5 degrees negative camber is allowed on front and rear suspensions. Strut suspensions may adjust camber by
the use of eccentric bolts (crash bolts) at the strut-to-spindle, slotted strut mounting holes at the spindle, and/or by use of any
slotted camber only adjuster plate at the top of the strut mounting plate. If upper strut slotted plates are used, they shall be
located on existing chassis structure and may not serve as reinforcement for that structure. Modifications to the top of the strut
tower may be made to allow for camber adjustment only. Modifications to the existing holes must only be moved straight
inboard even if the existing slots would translate the top of the strut rearward. On other forms of suspension, camber
adjustment may be achieved by the use of shims and/or eccentric bolts (crash bolts).
36. Suspension: competitors may use the OEM suspension, the specific suspension kit approved on the spec line or any B14
Bilstein shock or strut with no modifications except as required for mounting or to achieve allowed camber. Any camber plate
may be used, but may not alter caster. Caster shall be within factory specification. Any part required to adapt the B14’s to the
car must be submitted for approval by the CRB and added to the individual spec line. Any spring, including ‘helper’ or ‘tender’
springs, up to a maximum spring rate of 500 pounds may be used. Helper springs made of thin flat wire that are designed to take
up the gap between the main spring and shock/strut at full travel are allowed. Tender springs are not allowed. Springs are
allowed to be strapped or zip tied to the body. The purpose of the strap should be to keep the spring in place when the axle goes
into rebound. The strap can serve no other function. Bump stops may be deleted but cannot be modified or substituted and
shall serve no other purpose. Adjustable sway bar end links may be used on all cars. Sway bars may be disconnected and
removed.
If a manufacture does not offer an upgrade, a competitor may submit a shock and spring package for approval by the CRB. At the
time of approval, that kit will become the standard for that make and model until the manufacture submits a factory supported
kit.
The competitor supplied kits needs to be comprised of the following:
• Any non-adjustable shock absorber intended for the specific make model and year car is allowed. The shock absorber must be
installed in the original mounting locations. Remote shocks are not permitted. Threaded shock bodies or adjusters may be used.
• Any spring up to a maximum spring rate of 500 pounds may be used with the OEM suspension, the
manufacturer’s upgraded suspension kit, or the Bilstein B14 suspension kit.
37. ECU/PCM: OEM ECU/PCMs is required. Alternate engine calibrations are allowed. The car may meet federal emission
standards, but shall provide OBD II compliant data to the data link connector. Manufacturers may provide a stability control
override procedure or module.
38. B Spec and C-Spec front and rear toe settings are free. Rear toe adjustments may be achieved by the use of shims.
39. Fenders and wheel openings shall remain unmodified. It is permitted to roll under or flatten any interior lip on the wheel
opening for tire clearance. Cars with plastic/composite fenders may remove any interior wheel opening lip, but the resulting
material edge shall be no thinner than the basic fender material thickness. Non metallic inner fender liners may be removed.
40. An oil catch can is permitted.
41. Optional Hood Pins may be added to supplement the original hood latch system. All parts of the original hood latch system
must remain in the car.
42. Brake ducts are permitted, but they must serve no other purpose. Duct openings may be created by the removal of the fog
lights. Alternatively, duct openings may be created by opening 2 sections up to 14.5 square inches each of stock false grills
originally located in the front fascia, or radiator shroud, but in this case while fog lamps may be removed. Fog light holes must
be completely covered. The stock headlamp location is not permitted for brake ducting.
43. Automatic and cvt transmissions versions of all legal cars are legal for competition in B-Spec and C-Spec meeting their spec
line. Models with OEM paddle shifters are acceptable. Auxiliary transmission coolers may be approved on a case by case basis.
Part numbers must be submitted and added to the cars spec line.
44. Auxiliary transmission coolers may be approved on a case by case basis. Part numbers must be submitted and added to the
cars spec line.
45. Restrictor – BS B-Spec and C-Spec cars whose spec line require a restrictor will follow the definition of a Flat Plate Restrictor
(FPR) outlined in Appendix F with only one exception, B-Spec and C-Spec requires the thickness of the Restrictor to be 0.050” to
0.079.
46. All B-Spec and C-Spec cars in post-race impound at all Majors and Super Tour races shall open their hoods and
hatches/trunks for the purpose of visual inspection by other competitors. Competitors may thereafter initiate a protest as
permitted under the GCR.”
In GCR, CONTENTS, change as follows:
“9.1.9.2 TOURING (T2-T5 4) CATEGORY”
“T5 697”
In GCR, Section 9.1.9. TOURING CATEGORY CLASSES, remove as follows:
“Touring 5 (T5) Regional Class”
In GCR, Section 9.3.22. FIRE SYSTEM, change as follows:
“All cars shall be equipped with an On-Board Fire System except T3, T4, T5,”
In GCR, Section 9.1.9.2 TOURING (T2-T5) CATEGORY header, change as follows:
“TOURING (T2-T5 4) CATEGORY”
In GCR, Section 9.1.9.2 TOURING (T2-T5) CATEGORY, change as follows:
“Touring car eligibility: Cars are eligible for the class they are listed with a specification line and with the specific allowances
permitted. In addition T2-T5 4 cars may race one class up in touring classes above their specification line class as long as they are
a legal T2-T5 4 car and conform to their specification line allowances as classified. T5 is a Regional only class.”
In GCR, Section 9.1.9.2.D.1.e.1., change as follows:
“Any overbore up to .020” permitted T2- T5 4with +30 lbs. penalty. Oversize OEM equivalent pistons are required. This allowance
does not apply to any car adhering to spec rules.”
In GCR, Section 9.1.9.2.D.1.i.5., change as follows:
“T2- T5 4 only:”
In GCR, Section 9.1.9.2.D.5.a.1., change as follows:
“T2- T5 4:”
“Spherical bearings/bushings are not permitted in T2- T5 4 except for the specific examples listed in the class rules or vehicle
spec line.”
In GCR, Section 9.1.9.2.D.5.b.2., change as follows:
“T4 and T5 only”
In GCR, Section 9.1.9.2.D.5.b.2.c., change as follows:
“T3, T4 and T5 4:”
In GCR, Section 9.1.9.2.D.5.b.2.d., change as follows:
“T2- T5 4 only:”
In GCR, Section 9.1.9.2.D.7.a.3., remove as follows:
“T5 only: (unless specified on spec line) Any aftermarket wheel allowed.”
In GCR, Section 9.1.9.2.D.7.b., remove as follows:
“ T5 has a maximum tire width of 225 and a minimum aspect ratio of 45.”
In GCR, Section 9.1.9.2.D.10.c., remove as follows:
“All cars shall have, as a minimum, a fire extinguisher meeting the specifications of GCR Section 9.3 Fire System. Touring 2 cars
must have a fire system installed. Touring 3,and Touring 4, and Touring 5”
In GCR, Section 9.1.9.2.E.1., remove as follows:
“Touring Category Classes are as follows: T2, T3, T4 and T5 4:”
In GCR, Touring Spec Lines, remove 9.1.9.2. T5 Spec Line in it’s entirety.