Power King tires

How to Choose Power King Tires

Choose Power King tires by identifying the job first - trailer towing, commercial truck service, ATV/UTV use, or lawn and garden equipment - because the Power King catalog covers commercial trucks, trailers, ATVs, UTVs, agricultural equipment, and specialty vehicles rather than positioning itself as a passenger-car brand. 

• For trailer use, Towmax STR II is the correct starting branch. It is a special trailer (ST) rated tire built specifically for travel trailers, boat trailers, fifth wheels, and utility trailers. It should not be mounted on light trucks - the ST designation means trailer-only use, and load range selection within the Towmax range matters as much as size.
• For commercial truck use, the decision moves to the Navitrac lineup, which is Power King's flagship medium radial truck portfolio. The refreshed Navitrac range launched in 2024 and covers six lines from 17.5" regional all-position through 385/65R22.5 wide-based mixed service, with axle position - steer, drive, all-position, or trailer -as the primary selection filter inside that branch. 
• For ATV and UTV use, Terrarok A/T is Power King's radial all-terrain ATV/UTV line, selected by machine type and wheel diameter rather than by any road-service logic.
• For lawn mower and garden tractor use, Power King maintains a separate specialty category distinct from the ATV/UTV branch - selected by equipment type and rim size rather than load range or speed rating.

Towmax STR II, Navitrac, and Terrarok A/T are not interchangeable just because they share a value-oriented brand identity. Each begins from a different operating requirement, and crossing branches - such as fitting a trailer tire to a truck axle - produces the wrong result before size is ever checked.

Popular Power King Tire Sizes by Application

Power King's catalog spans commercial truck, trailer, industrial, lawn/garden, light truck, and ATV/UTV categories, so size selection follows the application branch first. Representative confirmed sizes across the main branches include: 

Trailer (Towmax STR II):

• ST175/80R13 - compact trailer fitment for small utility and boat trailers, lightest load range in the Towmax STR II range
• ST205/75R14 and ST205/75R15 - core utility and cargo trailer sizes, among the most widely stocked Towmax STR II fitments across US retailers
• ST225/75R15 - RV, travel trailer, and tandem-axle fitment, confirmed in Towmax STR II in multiple load ranges 
• ST235/85R16 - higher-load trailer size for equipment haulers and heavier tandem configurations 

Commercial truck (Navitrac):

• 11R22.5 - confirmed in Navitrac N555 drive axle configuration 
• 295/75R22.5 - confirmed in Navitrac N346, standard North American line-haul and regional size 
• 11R24.5 - confirmed across multiple Navitrac lines for highway fleet use

ATV/UTV (Terrarok A/T):

• 25x8-12 and 25x10-12 - standard ATV front and rear fitments in the Terrarok A/T line

Power King has operated since 1978 under TBC Corporation, which gives it one of the longer track records among value-tier commercial brands in North America. Load range and application branch matter more than brand comparison at this end of the market - the correct starting point is always confirming the tire is rated for the specific axle position and load cycle before comparing price or tread design.