Home / Yukon / Questions / Rules of the Road Rules of the Road Report Minimum tire tread for Yukon inspection: A Bald (0 mm) B 1.5 mm (tread-wear indicator flush) C 5 mm D 10 mm Show Answer & Explanation Correct Answer: B. 1.5 mm (tread-wear indicator flush) Below 1.5 mm wet traction degrades sharply. Previous Next More Rules of the Road Questions Yukon road obstruction: Yukon driver's licence: Police stop on Yukon road, driver must produce: New Yukon resident with Canadian-province licence: Moving oversize load on Yukon highway: Often Missed All Yukon Questions Smart Practice Mock Exam Road Signs Guide