I will refer you to this statement in my previous post
However, I do purposely use input (launch rpm, gear shift time) that seems reasonably attainable to get results that are reasonably close to what should be possibly in the real world. I definitely need to improve my launching skills before I can hope to approach the predicted results
A couple things...
* Drag coefficient is not the full story of the vehicle's aerodynamic drag. A drag coefficient (Cd) only describes the shape, but not the size. The drag coefficient must be multiplied by the frontal area to get the drag-area coefficient (CdA), which is what is actually used in calculations to determine the force of aerodynamic drag. So the Wrangler has even a bigger disadvantage than you would expect from drag coefficients alone (compared to typical cars) due to its larger frontal area.
* Aerodynamic drag doesn't have a very big impact on 0-60 mph times. To illustrate this, I simulated the turbo Wrangler's 0-60 run as if it had the same aerodynamic drag as a 2006 WRX STi. The STi's CdA value I have is 0.694. That's less than half of the Wrangler's CdA of 1.762. The end result for a turbo Wrangler that is more than twice as aerodynamic than reality is 0-60 mph in 4.78s. That's only 0.03s faster. Power:weight ratio has a much larger impact on 0-60 times than aerodynamics, just because so much of the 0-60 mph run is spent at low speeds where aerodynamic drag is minimal.
* My Wrangler is almost exactly the same weight as the Audi S4 example, but with about 380 whp, compared to the S4's 333 whp. Given that power:weight ratio is the dominant factor in 0-60 mph times, the turbo Wrangler's simulated 4.81s vs the S4's 5.2s seems pretty reasonable.
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