Colorado's tire law just got stricter.

The state raised the minimum tread depth and tightened enforcement on the I-70 mountain corridor. 4x4 and AWD get your Ford through the storm — worn tires don't.

SEPT 1 – MAY 31
I-70 Traction Law is now in effect
6/32" min
Tread depth required for AWD/4WD — up from 4/32" under the old rule.
Sep – May
Active every winter on I-70, Dotsero to Morrison — statewide anywhere storms hit.
$67 fine
Per violation — more if a crash or corridor closure follows.

Your Ford is built for this. Are your tires?

Many Ford models are available with 4x4 or all-wheel drive — but 4WD and AWD only qualify under the Traction Law when they're paired with winter, all-weather, or mud-and-snow rated tires that meet the new 6/32" tread minimum. Tires below that depth don't count, no matter how many wheels are driven.

Driving a two-wheel-drive Ford? The tire requirements matter even more without 4x4 or AWD — talk to us about a winter tire package before your next trip into the mountains.

Quick check

Place a quarter upside down in the tread. If the top of Washington's head is covered, you're above the legal minimum. If you can see his full head, it's time for new tires.

Free tread-depth check

Ask your service advisor today — we'll check all four tires against the state minimum and get you a straightforward quote if you need them, no appointment required.

Schedule Service
Requirements summarized from Colorado's Passenger Vehicle Traction Law (CDOT / C.R.S. 42-4-106) as of Sept 2026. Enforcement details for two-wheel-drive vehicles are pending further legislative clarification — confirm current rules at codot.gov or COtrip.org before mountain travel.

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