Which is better for daily driving?

The KM3. It has a 6-year warranty and a wider size range, and BFGoodrich's mud tires are known for decent road manners. The Cosmo is a budget mud tire with no stated warranty.

Is the BFGoodrich KM3 worth the extra $52?

Yes if you keep tires for years or drive rocky trails. The 6-year warranty and Coregard Max sidewall add real protection. If you only need a 33X12.50R20 for light off-road use, the Cosmo saves money.

The KM3 is the safer bet. It has a 6-year warranty and a proven compound. Cosmo publishes no treadwear warranty, so its life depends on how you drive.

Will the Cosmo fit my truck?

Only if your truck takes 33X12.50R20LT on an 8.5 to 11 inch wide 20-inch rim, usually with a lift. The KM3 comes in 55 sizes, so it fits far more vehicles.

Which handles heavy loads better?

The Cosmo, in this size. Its F load range and 12-ply construction are rated for 2,998 lbs per tire. The KM3's load rating depends on the size you pick.

Are both quiet on the highway?

Neither is quiet. Both are mud-terrain tires with aggressive tread blocks that hum at highway speed. The KM3 is generally the more refined of the two.

BFGoodrich Mud-Terrain T/A KM3 vs Cosmo Mud Kicker MT

The Cosmo Mud Kicker costs less: $208.93 at Amazon as of November 6, 2026, versus $260.99 at Amazon for the BFGoodrich KM3. The KM3 is the better tire for hard off-road use and long highway stretches, with a 6-year warranty and a proven mud-terrain design. The Cosmo is a budget 33-inch mud tire with a 12-ply F load range, good for a heavy truck on a tight budget. Buy the KM3 if you drive serious trails or keep tires for years. Buy the Cosmo if you want the 33X12.50R20 size for less money.

Today the Cosmo Mud Kicker MT costs $52.06 less at its best price.

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