Original: The tire expert's testimony rested on such unscientific "observation and experience", and so the Eleventh Circuit reasoned the district court should have made a different ruling based on their legal reasoning over Rule 702 without the Daubert gloss.
Simplified: The tire expert's testimony rested on observation and experience, and so the Eleventh Circuit reasoned the district court should have made a different ruling based on Rule 702 without the Daubert gloss.