ChampCar Endurance Series

ChampCar Tech Desk

Official channel for ChampCar technical questions, interpretations, and VPI requests.

Before you submit a ticket

The Tech Desk is for rules clarifications and technical questions. It is not a post race tech line, a place to protest results, or a place to fish for how other teams built their cars.

Most questions can be answered by reviewing the current BCCR Rulebook. Please read the applicable section before submitting a ticket.

If your question is already covered clearly in the BCCR, your ticket may simply be answered with a reference to the rulebook section.

VPI request checklist

For all Vehicle Performance Index (VPI) requests you must include:

  • Year, make, model, and trim level
  • Engine size and engine horsepower
  • Drive type: FWD, RWD, AWD, or 4x4
  • Transmission type: automatic or manual
  • Car weight and all factory options that affect performance
  • A link to the vehicle on automobile-catalog.com or another site with full specifications if it is not listed there

Requests that do not include all required info and research will be denied without review.

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Aerodynamics & Bodywork
Suggested knowledgebase articles:

Knowledgebase Aerodynamics & Bodywork

Articles in this category

2019-11-28 - Front Air Dam

Air Dam - 10 points Tech interpretation and enforcement is any non-oem vertical aero component is an...

3,165
(382)

2019-11-28 - BMW Bumper Covers

BMW 3-Series bumper covers Rule 4.7.6. Replacement of OEM Parts / Tech interpretation and enforcemen...

1,293
(330)

2019-11-28 - Radiator Ducting

Radiator Ducting Tech interpretation and enforcement is any ducting in front of the radiator is free...

1,598
(367)

2019-11-28 - Definition of a splitter

Splitter - 10 points Tech interpretation and enforcement is any non-oem horizontal aero component fo...

1,720
(547)

2020-01-20 - Added Splitter Materials - Canards

Q.Hello, the interpretation says that the splitter is a horizontal aero component. Does this mean th...

1,552
(310)

2020-02-27 - Convertible Hardtops

Q.Car: 1999 Mazda MX-5 MiataTreasure Coast Miata & Jeeps offers a lightweight Miata hardtop.

1,327
(466)

2020-03-20 - Aftermarket Front Bumper Cover

Q.Can I install an aftermarket bumper cover on my car?Example:  Aftermarket non-M style e46 cover

1,054
(350)

2020-03-20 - Aero pan

Q.What are the width limits of an aero pan? Is it the extreme widths of the car like a wing? Is it t...

1,121
(335)

2020-04-08 - Fastback Roof

Q.If I change out my hardtop for a fastback style hardtop, will this still be zero points? please se...

1,194
(504)

2020-10-19 - Air Dam Angle

Q.The rules do not currently specify a a tolerance on how "vertical" the air dam must be. Other seri...

904
(1)

2021-01-03 - Repurposing Lexan

Q.Can I remove the lexan rear window and attach it to the trunk to act as an aero device for 0 point...

898
(2)

2021-11-22 - Wing Components - Additional Points

Q. What is included for the 10pts for a wing?Wing, Endplates, mounting?What are the wing endplate si...

779
(3)

2021-01-03 - Lexan Fastback Window

Q: By rule we are allowed to run a lexan rear window. Can we re-locate that rear window to our fast ...

988
(2)

2021-01-04 - Splitter Ramps

Q.Would splitter ramps be considered part of the splitter (10pts)? Or would these be additional aero...

1,450
(2)

2022-01-22 - Bed cover

QIs a bed cover for our s-10 considered an aero item, and charged 10 points under aero device? A.Joh...

571
(1)