No, Montana law prohibits window tinting below 24% visible light transmission (VLT) on front side windows, making 15% illegal. The Montana Department of Justice enforces this under MCA § 61-9-403, aligning with federal safety standards. Local law enforcement, including Missoula and Billings police, actively cite violations during roadside inspections.
Key Regulations for 15% Window Tint in Montana
- Front side windows must allow ≥24% VLT (measured by an approved photometer), rendering 15% non-compliant.
- Windshield tinting is restricted to non-reflective strips ≤5 inches below the AS-1 line; any additional tint is prohibited.
- Rear windows may use any darkness, but dual-side mirrors are mandatory if rear tint exceeds 35% VLT.
Montana’s 2026 regulatory review, led by the Montana Highway Patrol, may tighten enforcement but maintains current thresholds. Medical exemptions require documentation from a licensed physician, submitted to the DOJ for approval. Non-compliant vehicles face fines up to $100 per violation, with repeat offenses escalating penalties. Dealers installing illegal tint may lose their license under MCA § 61-9-404. Always verify VLT compliance using certified equipment, as subjective assessments are inadmissible in court.