What is the maximum allowable tread depth for passenger vehicle tires in Maine?

The maximum allowable tread depth for passenger vehicle tires in Maine is set at 2/32 inch. This measurement is critical for ensuring the safety and effectiveness of tires on the road. Tires with adequate tread depth are essential for good traction, especially in wet or slippery conditions. The requirement of 2/32 inch reflects the minimum acceptable level of tread wear to maintain sufficient grip and reduce the risk of hydroplaning.

Exceeding this depth, as suggested by other options, indicates tires that are either new or in excellent condition, which is generally favorable, but for inspection purposes, the minimum standard enforced is strictly 2/32 inch. Thus, tires worn below this depth are deemed unsafe and are not allowed on vehicles operating legally on Maine roads. This regulation helps ensure that all vehicles meet safety standards, contributing to overall road safety for all drivers and passengers.