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Q: What does the knurled barrel do on a drag or track launch?

The knurled barrel bites into the tire bead so the tire can’t rotate on the wheel under extreme torque. A Plaid launching on slicks can slip a tire on a smooth barrel, which instantly unbalances the wheel and can break a bead seal. On a car built to set lap records, that grip is not optional. It keeps the tire and wheel acting as one unit.

Tesla Model S

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For the do it yourselfer or trained mechanic, our in-depth installation guides provide step by step detailed instructions on fitting your Tesla with Unplugged Performance Parts.
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Tesla Model S

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