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Old 04-22-2020, 06:21 PM   #26 (permalink)
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For anyone who wants to read the latest research data on wheel drag for themselves, here are the relevant papers I referenced in my book:

Vdovin, A., “Investigation of Aerodynamic Resistance of Rotating Wheels on Passenger Cars” Chalmers University of Technology, Gothenburg, Sweden, 2013

Mayer, W. and Wiedemann, J., "The Influence of Rotating Wheels on Total Road Load," SAE Technical Paper 2007-01-1047, 2007

Landström, C., Walker, T., Christoffersen, L., and Löfdahl, L., "Influences of Different Front and Rear Wheel Designs on Aerodynamic Drag of a Sedan Type Passenger Car," SAE Technical Paper 2011-01-0165, 2011

D'Hooge, A., Palin, R., Johnson, S., Duncan, B. et al., "The Aerodynamic Development of the Tesla Model S - Part 2: Wheel Design Optimization," SAE Technical Paper 2012-01-0178, 2012

...and too late for this edition of my book, but relevant is:

Wolf, T., "The aerodynamic development of the new Porsche Cayenne", Journal Automotive Engineering, I-19, 2019
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