BMW Classing
We will use 9 classes: Showroom 1, 2 & 3, Tuner 1, 2, 3, 4, Modified and Novice.
Each group is aimed at grouping vehicles with similar performance capabilities. If your specific car is not listed below, please contact the classing coordinator to determine your class.
AX BMW Classing - Showroom
| S1 | S2 | S3 |
|---|---|---|
| i8 | M3 E36, E30 | 2002ti All |
| Z8 | M Coupe and Roadster 1996-2000 | |
| 1 Series M Coupe | 1 Series All non-M | |
| M2 All | 2 Series All non-M | |
| M3 F80, E9X, E46 | 3 Series All non-M | |
| M4 All | 4 Series All non-M | |
| M Coupe and Roadster 2001-2002 | 5 Series All including M | |
| Z4 M Coupe and Roadster 2002-2017 | 6 Series All including M | |
| Z3 6-cyl non-M 1997-2002 | ||
| Z4 Coupe and Roadster non-M 2002-2017 | ||
| MINI (All) | ||
| All BMW otherwise classed |
MINI Classing
All MINI’s will be combined into S2.
Non-BMW Classing
All Non-BMW classes will be classed together.
Rookie Class
We have a class specifically for entry level drivers. “Rookie” is defined as someone who has never, ever autocrossed, driven at speed in a High Performance Driving School either with BMW CCA, BMW Performance Center or any other affiliation.
Performance Class
The Performance Class establishes the permitted modifications for each group. If a modification is not listed, it is NOT permitted.
NOTE: If the wheels and suspension items were FACTORY options on the model, it is permissible to interchange. BMWNA’s recent offerings of “high performance dealer installed” items are different, and are not permitted as a showroom allowance.
BMW/MINI Modification Classing
| Showroom (S) | Tuner (T) | |
|---|---|---|
| Wheels | Stock wheel size. Wheel spacers allowed but tires must not extend past fenders | Free |
| Tires | DOT approved w/200+ treadwear rating (OEM tires if lower rating) | Any size DOT approved tires w/200+ treadwear rating |
| Brakes | OEM size rotors & stock size brake pads | Free |
| Shocks & Struts | Adjustable shocks permitted but must retain original mounting points | Free |
| Springs | Stock | Free |
| Strut Bars | Aftermarket front strut bar permitted | Free |
| Sway Bars | One sway bar may be changed or removed | Free |
| Other Suspension (including bushings) | Stock | Any non-metal |
| Seats | Stock | Free |
| Intake & Manifold | Stock - Fit replacement air filter permitted (Example: K&N Drop-In) | Free |
| Steering Wheel | Stock or factory Option | Free |
| Software/Tuning | Stock | Free |
| Nitrous | Prohibited | Prohibited |
| Methanol Injection | Prohibited | Prohibited |
| Carburetors | Downdraft Weber permitted | Free |
| Internal Engine Modifications | Stock | Free |
| Body Panels | Bumper panels may be replaced | Free |
| Aerodynamic Additions | Free | Free |
| Power Pulleys/Underdrive Pulleys | Stock | Free |
| Headers & Exhaust System | Axle-back (muffler only) replacements permitted. No change to catalysts allowed | Headers free, Catalysts required on 96+ cars |
| Aftermarket Forced Induction | Prohibited | Prohibited |
| Intercoolers | Stock | Free |
| Differential | Stock | Free |
| Short Shifter | Free | Free |
| Clutch Stop | Free | Free |
| Flywheel & Clutch | OEM or equivalent | Free |
| Rollbar/Rollcage | Bolt in units permitted | Free |
| Restraints | Stock/CG locks permitted | Free |
| Engine Oil Cooler | Free | Free |
AX BMW Classing - Tuner
| T1 | T2 | T3 | T4 |
|---|---|---|---|
| E36 M3 | All 1, 2, 3, & 4 Series Turbo Cars (Non-M) | All E30 (non-M) | All 2002ti |
| E46 M3 | All non-M F30 Series Cars | All 4-cyl (non-turbo & not otherwise classed) | |
| E92 M3 | E30 M3 | All 3 Series 6-cyl (not otherwise classed) | |
| Z3 M Roadster & Coupe (S54) | 335i/335xi | All BMW Older Than 1991 (not otherwise classed) | |
| Z4 M Roadster & Coupe | E60 M5 | All 5 Series (not otherwise classed) | |
| Z4 (35i variants) | E63 M6 | All 6 Series (not otherwise classed) | |
| F80 M3 | Z4 (not otherwise classed) | All 7 Series | |
| M4 | Z3 M Roadster & Coupe (S52) | All 8 Series | |
| M235i (including xDrive) | X6M | i3 | |
| M2 | X5M | ||
| 1M | i8 |
AX BMW Classing - Modified
| Modified (M) | |
|---|---|
| Nitrous | Prohibited |
| Any vehicle with modifications exceeding allowances for tuner | Free |