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      01-08-2026, 06:03 PM   #3
kolosy
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Drives: over potholes
Join Date: Dec 2008
Location: Chicago

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Quote:
Originally Posted by omgzirra_exe View Post
Tough question honestly. Most people will default to Zebulon because their front aero is designed to match their rear wing, and the GT250 should be in a similar ballpark aerodynamically – maybe a bit lower, but not wildly different.

If you don’t want to jump straight into a full, aggressive splitter setup, I’d look at GT4 canards or AJ Hartmann canards first. They add meaningful front balance without forcing you into a huge splitter right away.

If you decide to build your own splitter, starting around 4 inches of extension is a solid baseline. Then just test and tune from there to see how the car responds.
I was reading that you want 2x the ground clearance for your splitter if you’re going the Home Depot racing route..
I will say that my gt4 lip and canards were woefully inadequate for my (admittedly massive) 72” swan neck.
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Current '20 AG X7M50 (daily + track tow), M4 GTS (track), '21 X3 M40i (wife)
Recent Past '11 E90 M3 (track), '21 DG X5MC, '22 BG G82, '12 E92 M3 ZCP, '08 E93 M3, '18 F80 ZCP, '04 E46 M3

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