The Mastertrack UN203 is an economical ST radial trailer tire designed for conventional, everyday towing. It is built for light- to medium-duty trailer applications where dependable road performance and value are more important than premium or specialized features.
With a practical highway-oriented tread, steel-belted radial construction, and a durable tread compound, the UN203 provides stable tracking, wet-road traction, and consistent performance for everyday trailer use. It is a straightforward choice for trailer owners looking for a reliable replacement tire at a budget-friendly price.
01
ST175/80R13
02
97/93N
03
Load Range D
04
2P+2S
UN203
Key Performance Advantages
Engineered for
Everyday Value Towing
01.
Value-Minded Trailer Performance
The UN203 delivers the essential performance needed for everyday trailer use without adding unnecessary premium positioning. It is a practical choice for trailer owners who want dependable towing performance while keeping tire costs under control.
02.
Made for Everyday Towing
Designed specifically for trailer applications, the UN203 is suited to routine hauling with utility, cargo, boat, camper, and other conventional trailers. Its ST radial construction is built around the needs of regular trailer service.
03.
Steady Highway Tracking
The road-focused tread pattern helps maintain consistent contact with the pavement for stable straight-line tracking. This supports predictable trailer handling during everyday highway and local towing.
UN203
04.
Durable Performance in Wet Conditions
Circumferential grooves help channel water away from the tread contact area, supporting traction on wet roads, while the steel-belted radial construction and durable tread compound provide the consistent road contact and durability needed for regular trailer use.
05.
An Affordable Replacement Choice
The UN203 is a sensible replacement option for trailer owners who prioritize price and practical everyday performance. It combines essential towing stability, wet-road traction, and durable construction in a value-focused trailer tire.
06.
Backed for the Long Haul
Enjoy peace of mind with a 3-year road hazard warranty covering bulges, air leaks and blowouts before 4/32" of treadwear, plus a 5-Year Manufacturer Warranty.
Value Performance · Everyday Towing · Dependable Wet Traction
UN203
Fits Select Trailer Applications
Built for
Everyday Towing
Designed specifically for trailer applications, the UN203 is suited to routine hauling with utility, cargo, boat, camper, and other conventional trailers. Its ST radial construction is built around the needs of regular trailer service.
Small Utility Trailers
Boat & Fishing Trailers
Pop-Up Camper Trailers
Small Enclosed Cargo Trailers
ATV & UTV Trailers
Personal Watercraft Trailers
Lawn & Garden Trailers
Small Equipment Trailers
Fitment Note
Trailer compatibility varies by trailer model, axle configuration, load requirements, and original tire specification. Always check the trailer manufacturer's recommended tire size, load range, and required load capacity before ordering.
Check your fitment
Enter "Year / Make / Model" for real-time compatibility.
Warranty summer for replacement tires purchased on or after 11/01/17
Do you need assistance selecting the proper tires for your vehicle? Our team of highly qualified experts is ready to assist you with their knowledge and enthusiasm. Simply pick up the phone and call us. Alternatively, send us an email and we can talk. We enjoy assisting others and solving challenges with email or a quick phone call at
Warranty summer for replacement tires purchased between 07/01/16 and 10/31/17
Do you need assistance selecting the proper tires for your vehicle? Our team of highly qualified experts is ready to assist you with their knowledge and enthusiasm. Simply pick up the phone and call us. Alternatively, send us an email and we can talk. We enjoy assisting others and solving challenges with email or a quick phone call at
Warranty summer for replacement tires purchased between 09/01/15 and 06/30/16
Do you need assistance selecting the proper tires for your vehicle? Our team of highly qualified experts is ready to assist you with their knowledge and enthusiasm. Simply pick up the phone and call us. Alternatively, send us an email and we can talk. We enjoy assisting others and solving challenges with email or a quick phone call at
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