South Dakota window tint law
In South Dakota, a passenger car's front side windows must let in at least 35% of light; rear side windows: at least 20% of light in; rear window: at least 20% of light in. Source: SDCL §32-15-2.4, §32-15-2.5, §32-15-2.9, checked November 2026.
| Front side windows | 35% At least 35% light transmittance (enforcement tolerance 9%). |
|---|---|
| Rear side windows | 20% At least 20% light transmittance (enforcement tolerance 9%). |
| Rear window | 20% At least 20% light transmittance (enforcement tolerance 9%). |
| Windshield | No film below the AS-1 line or the lowest point of the sun visor. |
| Tolerance | 9% enforcement tolerance (stated in §32-15-2.4 and §32-15-2.5). |
The South Dakota front-side limit on a car
Levels we picture that meet the front-side limit: 70% (light)50% (medium-light)35% (medium)
Source
SDCL §32-15-2.4, §32-15-2.5, §32-15-2.9
“side windows on either side forward of or adjacent to the operator's seat, which reduces the light transmittance of such windows to the combined level below thirty-five percent, with an enforcement tolerance of nine percent.”
Checked November 2026. A summary of the passenger-car rules, not legal advice: laws change, so check the source or ask a local tint shop before you buy.
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