Texas drivers love a technicality, and the five-day grace period on vehicle registration is the closest thing the state offers to a built-in alibi. The catch involves a detail most people gloss over: those five days are working days, not calendar days, which means a sticker that expires on a Friday effectively buys almost nothing extra before the following Friday rolls around. The rule comes from Section 502.407 of the Texas Transportation Code. The window starts the day afte