37x12.50R20 in Metric
Shop Deals & Availability for 325/60R20
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Explore compatible 20-inch wheels (Method, Fuel, Black Rhino, KMC) with custom offsets for a wider, aggressive truck stance.
Eliminate tire rub with 2-inch leveling spacer kits (Rough Country, MotoFab), heavy-duty 12V portable tire inflators, and digital pressure gauges.
Top Metric Equivalents for 37x12.50R20
Ranked by closest physical match, wheel well clearance, and steering comfort.
Why Switch From Flotation (37x12.50R20) to Metric?
Real benefits for truck, Jeep, and overland builds.
Metric tires are manufactured by the millions as factory original equipment for trucks like the Raptor, Tremor, and Rubicon. Flotation sizes are specialty aftermarket tires with lower production runs and higher retail prices.
Most stock truck wheels are 7.5" to 8.5" wide. Tire manufacturers specify that 12.50" wide flotation tires require at least an 8.5" or 9.0" rim. Commercial shops (Costco, Discount Tire) will mount metric sizes like 285/70 or 295/70 without refusal.
A 12.50" wide tire creates a wider scrub radius that rubs against the front sway bar, crash bars, and frame. Choosing a metric equivalent gives you the exact same height with a narrower tread that clears without cutting.
37x12.50R20 Vehicle Fitment & Clearance
Common trucks, Jeeps, and lift requirements.
Frequently Asked Questions: 37x12.50R20 Metric Equivalents
What is the metric equivalent of a 37x12.50R20 tire?▼
The closest metric equivalent of a 37x12.50R20 tire is 325/60R20, which measures 35.4 inches in diameter and 12.8 inches in width. Other popular metric alternatives include 295/65R20 (35.1"x11.61"), 315/60R20 (34.9"x12.4") depending on whether you want a wider or narrower profile.
What does 37x12.50R20 measure in millimeters?▼
A 37x12.50R20 tire measures exactly 939.8 mm in overall diameter, 317.5 mm in section width, and 215.9 mm in sidewall height, mounted on a 20-inch wheel.
Why should I buy a metric tire instead of flotation inches?▼
Metric tire sizes (such as 285/70R17, 295/70R18, or 315/70R17) are manufactured in significantly higher volumes for factory vehicles like the Ford Raptor and Bronco Sasquatch. This makes them $30 to $60 cheaper per tire. Metric sizes also offer a wider selection of heavy-duty Load Range E (10-ply) ratings for towing, weigh less (saving gas and making your truck feel peppier), and safely fit factory wheels without tire shop mounting issues.
Will a 37x12.50R20 rub on a stock truck?▼
Fitment depends on vehicle ride height. 2.5" to 3.5" leveling or suspension lift on Super Duty / HD trucks; 6" lift on half-ton trucks. On modern half-ton trucks (F-150, Silverado, Tacoma), full 12.50-inch wide tires often rub the sway bar or crash bars at full steering lock, which is why narrower metric sizes like 295/65R20 are preferred.