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Up front for skidpad testing, we wanted to see how the track width and tire contact patch would affect the lateral-G numbers. Here the 215/75R -14 Coker Redline shows its scuffed sidewall after some laps. From Summit, we ordered the 15x7 Weld's with 3-inch backspacing (4 inch is standard) and 235/60 T/A's to widen the track 3 inches, while the tire contact patch was increased 2 inches. We set the QA1's at 10 clicks.