BMW Classing

This season we will continue with our reduced BMW classing to just 6 classes; Showroom 1 & 2, Tuner 1, 2, 3 & Modified.  There have been modifications to the classing of cars in these classes, as reflected below.

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.

NCC Autocross allows BMW SAVs bearing the factory M designation (i.e. X5M, X6M, X3 M40i, etc) and SAV’s equipped with aftermarket lowering suspension. Models not meeting this criteria will not be allowed to participate due to rollover risk. If you have any further questions (or questions about eligibility of SAVs from another manufacturer) please email us at


BMW Showroom Classing

i8M3: E30, E36, E46320 F30x
Z8M Coupe and Roadster 1998-2000 (S52 engine)3 Series E36, E46, E9x non-turbo
M8M5 All5 Series 1985-2003
1 Series M CoupeX3M, X5M6 Series 1984 - 1989
M2 All1 Series All non-MZ3 4 cyl
M3 and M4 (F8X)2 Series All not M2i3
M3 (E9X)335i Series E9XAll BMW not otherwise classed
M Coupe and Roadster All3 Series F3x 2012 on except 320i
Z3M 2001-2002 (S54 engine)Z3 6-cyl non-M 1997-2002
Z4 M Coupe and Roadster Including M 2002-20174 Series (all)
Z4 M40iZ4 not otherwise classed
5 Series 2004 and newer
6 Series 2003 and newer


BMW Tuner Classing

M3: E36, E46, E92, F80All 1, 2, 3, & 4 Series Turbo Cars (Non-M)All E30 (Non-M)
M4All non-M F30 Series CarsAll 4-cyl (non-turbo & not otherwise classed)
1ME30 M3All 3 Series 6-cyl (not otherwise classed)
M235i (including xDrive)M8All BMW Older Than 1991 (not otherwise classed)
M2 and M2 CompetitionE60 M5All 5 Series (not otherwise classed)
Z3 M Roadster & Coupe (S54)E63 M6All 6 Series (not otherwise classed)
Z4 M Roadster & CoupeZ4 (not otherwise classed)All 7 Series
Z4 (M40i and 35i variants)Z3M Roadster & Coupe (S52)All 8 Series
X3M, X4M, X5Mi3


BMW Modified Classing

All BMW Cars Meeting Criteria for Modified Class No Matter What Model


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 a different, and are not permitted as a showroom allowance.


BMW/Mini Modification Classing

Showroom (S)Tuner (T)Modified (M)
WheelsStock wheel width and diameter must be stock +/- one inch. Wheel spacers allowed but tires must not extend past fendersFreeFree
TiresDOT approved w/200+ treadwear rating (OEM tires if lower rating)Any size DOT approved tires w/200+ treadwear ratingAny size tires with DOT approval
BrakesOEM size rotors & stock size brake padsFreeFree
Shocks & StrutsAdjustable shocks permitted but must retain original mounting pointsAdjustable shocks permitted but must retain original mounting pointsFree
Strut BarsAftermarket front strut bar permittedFreeFree
Sway BarsOne sway bar may be changed or removedFreeFree
Other Suspension (including bushings)StockAny non-metalFree
Intake & ManifoldStock - Fit replacement air filter permitted (Example: K&N Drop-In)FreeFree
Steering WheelStock or factory optionFreeFree
Methanol InjectionProhibitedProhibitedFree
CarburetorsDowndraft Webber permittedFreeFree
Internal Engine ModificationsStockStockFree
Body PanelsBumper panels may be replacedFreeFree
Power Pulleys/Underdrive PulleysStockFreeFree
Headers & Exhaust SystemAxle-back (muffler only) replacements permitted. No change to catalysts allowedHeaders free, catalysts required on 96+ carsFree
Aftermarket Forced InductionProhibitedOn cars equipped from the factory with turbo/superchargers, the boost may be raised either by tuning or pulley changesFree
Short ShifterFreeFreeFree
Clutch StopFreeFreeFree
Flywheel & Clutch OEM or equivalentFreeFree
Rollbar/RollcageBolt in units permittedFreeFree
RestraintsStock/CG locks permittedFreeFree
Engine Oil CoolerFreeFreeFree

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