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Houston BMWCCA and PCA Autocross Car Class Worksheet
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The autocross committee of the Houston BMWCCA has decided to reformat BMW model classes into a more equitable system. The new classification system has been adapted from those in use by other BMWCCA chapters around the country. Similar systems are currently in use by the Windy City, Lone Star, New York and Boston chapters. This new classification system is based upon (1) the inherent performance characteristics of individual BMW models and (2) the modifications you have performed on your bimmer. If you are not driving a BMW simply choose the correct class from the table below.

Class Points/Car
BMW Classes (Use Form Below)
G 75 and up
F 65 to 74
E 55 to 64
D 45 to 54
C 35 to 44
B 20 to 34
A 0 to 19
Porsche Classes
Porsche Classes Worksheet
Non BMW / Non Porsche Classes
X1 8 cylinders and up, plus Turbocharged cars
X2 6 Cylinders and normally aspirated rotaries
X3 4 cylinders or less
X4 Prepared Autocross cars

The system assigns a combined "point" value for both your BMW model and its subsequent modifications. We have designated seven (7) final classes.  If you are driving a bimmer you may use the following form to calculate your class.

Below are two sets of tables we would like you to review. The first lists all BMW models. Find the box which indicates your model BMW and click the radio button on the left. You will see a point value in the box next to your model. The second table lists types of modifications. Check the box next to each modification you have performed on your vehicle. Again, note the point value next to each modification type. Don't forget to indicate if you are running with "R" compound tires (autocross tires or race tires such as Kuhmo Victoracers or Hoosiers). 10 points will be added for "R" compound tires for cars who start in Class A. All other cars will be "bumped" to the next higher class for "R" compound tires. Also please note in the mods table if your car came with a factory sport package (E34, E36, E39, E46, Z4). After you have selected your model and checked your modifications, click the submit button. When the page is reloaded it will have your class information displayed below.


Once you press the Submit button your class will be displayed below.

Model Modification Total Points Class

Please select your BMW model and check all modifications:

Check Points Model
00 1800TI-4dr ('64 - '66)
1600-2 ('66 - '71)
1602 ('71 - '75)
03

2002 ('68 - '76)
320i ('77)
320i ('80 - '83)
528e ('82 - '85)

04 320i ('78 - '79)
528e ('86 - '88)
06 2000tii ('69 - '72)
2002tii ('71 - '74)
07 3.0si ('75 - '76)
09 733i ('78 - '79)
10

2800 ('68 - '71)
3.0s ('73 - '76)
530i ('75 - '78)
630csi ('77 - '82)
528i ('79 - '81)
733i ('80 - '81)

11 733i ('82 - '83)
525i ('89 - '90)
12 733i ('84 - '84)
13 318i E30M10 ('83 - '88)
15 3.0cs ('71 - '75)
533i ('82 - '84)
633csi ('83 - '84)
735i ('85 - '87)
17 3.0csi ('71 - '75)
20 2002 Alpina ('67 - '67)
325/e E30M20 ('84 - '86)
535i ('85 - '88)
635csi ('85 - '86)
735i ('88 - '92)
318i E36 ('91 - '99)
850i ('91 - '93)
X5 3.0i ('01 - '04)
X3 2.5i ('04 - '04)
22 318i E30M42 ('89 - '90)
318ti E36 ('91 - '99)
24 740iL ('93 - '94)
Mini Cooper ('02 - '04)
25 635csi ('88 - '90)
525i ('91 - '95)
750iL ('91 - '94)
740i ('93 - '94)
740iL ('96 - '01)
X5 4.4i ('00 - '04)
745i/L ('02 - '04)
X3 3.0i ('04)

26

740i ('95 - '96)
750iL ('95 - '01)
Z3 1.9 ('96 - '98)
760i/L ('03 - '04)
28 535i ('89 - '93)
530i ('93 - '95)
528i ('97 - '00)
525i ('01 - '03)
X5 4.6is ('02 - '03)
750i/Li ('06 - '07)
30 525i ('04)
X5 4.8is ('04)
31 530i ('01 - '03)
32 325i E30M20 ('77 - '92)
33 530i ('04)
34 M6 E24 ('87 - '90)
35 540i ('94 - '96)
37 540i ('97 - '03)
38 323i Euro ('77 - '83)
M5 E34 ('91 - '93)
323 E36/46 ('98 - '01)
Mini Cooper S ('02 - '04)
39 M5 E28 ('87 - '88)
325 E36/46 ('92 - '04)
40 Z3 2.3 ('99)
41 323i Euro ('84 - '86)
M3 E30 ('88 - '91)
328 E36/46 ('96 - '01)
325i ('06 - '07)
42 Z3 2.5 ('01 - '02)
545i ('04)
645ci ('04)
44 550i ('06 - '07)
650i ('06 - '07)
45 Z3 2.8 ('97 - '00)
330i E46 ('01 - '04)
Mini Cooper S Works Package ('02 - '04)
328i ('07)
46 Z3 3.0 ('01 - '02)
Z4 2.5 ('03 - '04)
47 M5 E39 ('00 - '03)
Z4 3.0 ('03 - '04)
330i ('06 - '07)
48 MRoadster-240 ('98 - '00)
49 330i E46 ZHP ('03 - '04)
50 850csi ('94)
M3 E36 ('95)
MCoupe-240 ('98 - '00)
MRoadster-315 ('01 - '02)
M3 E46 ('01 - '04)
51 M3 E36 ('96 - '00)
52 MCoupe-315 ('01 - '02)
335i ('07)
53 M3 LTW ('95)
Z8 ('00 - '04)
M3 E46 Competition Pkg ('05)
M5 E60 ('05 - '06)
54 M6 E64 ('05 - '06)
MRoadster ('06)
55 MCoupe ('06)
Check Points Enhancement
FACTORY OPTIONS
2 Factory Sports Package (is or ti Sport)
4 Factory Performance Package
-2 Automatic Transmission
-2 Non-Z3 convertibles
-2 4 wheel drive (ix/Xi)
-1 Wagon
ENGINE
1 Exhaust headers (Non OEM)
1 Aftermarket cat-back exhaust
  2 each Weber 32/36 DGV downdraft (each)
  2 each Sidedraft 2bbl carb (each)
3 Performance cam (Non OEM)
3 Increased Compression Pistons (Non OEM)
3 Lightened flywheel
3 Underdrive Pulley
3 Power chip/software update
10 Turbocharger/Supercharger
10 Upgraded motor swaps
5 HFM upgrades + chip/software
0 Aftermarket filter (in factory airbox)
1 Unshielded cone filter
3 Shielded cone filter
DRIVELINE
2 Upgrade from open diff to OEM LSD (no ratio change)
3 Upgrade to higher ratio diff (LS or not)
2 Upgrade to >40% lockup or Torsen diff
2 5/6 speed close ratio transmission (Non OEM)
2 SMG
5 SMG for M series
SUSPENSION & BRAKES
  1 Sport/Race shocks
  2 each Sway bar (Non OEM) (each)
2 Modified front camber
2 Quick ratio steering
4 Cut or special springs (Non OEM)
  1 each Bolt-on chassis reinforcements (each) (X-braces, strut bars)
4 Active Roll Stabilization
0 Modified rear camber
WHEELS & TIRES
1 OEM diameter wheel Plus 1
2 OEM diameter wheel Plus 2
3 OEM diameter wheel Plus 3
10 "R" Compound Tires (Any type). Only DOT tires allowed. (e.g. Kuhmo Victoracers, Hoosiers); Treadware rating less than 140
10 points for A class cars. "bumped" to next higher class for all other cars.
CHASSIS AND BODYWORK
5 Extensive Lightening (fiberglass hood, seats removed)
Bolt-in roll bar/cage
3 Welded-in roll bar/cage
2 Racing Seat
1 4, 5, or 6 Point Harness