brief guide
To Change or Not to Change
When you modify your car in any way, you are changing the original design and the vehicle's overall characteristics. Sometimes that is a good thing, while other times it can lead to negative results. Below is a list of common modifications and their estimated change in percentage of the overall drag coefficient (Cd) of an average car. For example, the outside rearview mirrors add a two to four percent increase in the Cd. However, it should be noted that your results may vary. Modification % Change Lowering the vehicleby 30mm approx. -5 Smooth wheel covers -1 to -3 Wide tires +2 to +4 Windows flush with exterior approx. -1 Sealing body gaps -2 to -5 Underbody panels -1 to -7 Concealed headlamps +3 to +10 Outside rearview mirrors +2 to +5 Airflow into the enginecompartment +4 to +14 Brake cooling devices +2 to +5 Interior ventilation approx. +1 Open windows approx. +5 Open sunroof approx. +2 Roof-mounted surfboard rack approx. +40 from : https://www.europeancarweb.com/tech/0...de/tables.html |
what is "concealed headlamps"?
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I think that it's saying that a car with concealed headlamps increases its Cd by 3 to 10% when they are popped up. Just my guess.
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ah ok i didnt think of that, and i understand how it would do that, miatas are pretty bad...
back to the guide: its a good set of opinions. |
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