Oklahoma Studded Tire Law
Oklahoma allows metal studs only November 1 to April 1, and only on vehicles with a rated capacity of 2 tons or less (47 O.S. 12-405). That capacity cap is the catch for a rig. A loaded commercial truck blows past 2 tons, so studs are effectively off-limits on a Class 8 here, season or not. Where studs are legal, they must cover no more than 3% of the tread and project no more than 3/32 inch. Chains are no workaround, because the same 2-ton cap and November 1 to April 1 window apply to tire chains.
Running studs in Oklahoma
Oklahoma allows metal studs only November 1 to April 1, and only on vehicles with a rated capacity of 2 tons or less (47 O.S. 12-405). That capacity cap is the catch for a rig. A loaded commercial truck blows past 2 tons, so studs are effectively off-limits on a Class 8 here, season or not. Where studs are legal, they must cover no more than 3% of the tread and project no more than 3/32 inch. Chains are no workaround, because the same 2-ton cap and November 1 to April 1 window apply to tire chains.
The window and winter-tire rules
- Season: November 1 to April 1 (47 O.S. 12-405) — and only on vehicles with a rated capacity of 2 tons or less
- No M+S/3PMSF traction-tire mandate and no chain-control program. The statute that caps studs caps tire chains the same way. Both are permitted only on vehicles rated up to 2 tons and only November 1 to April 1 (47 O.S. 12-405(C)(2)), so on its face a heavy truck has statutory permission for neither. Studs do not count as chains. See the Oklahoma chain-law page.
Oklahoma Studded Tire FAQ
Are studded tires legal in Oklahoma?
When can you use studded tires in Oklahoma?
What is the fine for illegal studded tires in Oklahoma?
Reference information for planning, not legal advice. Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it. Last reviewed July 2026. Source: https://www.oscn.net/applications/oscn/DeliverDocument.asp?CiteID=82431. See our Terms & Disclaimer.
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