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Black trailer tire with raised white lettering on sidewall, 15 inch rim size

Trailer Master

Trailer Master ST PRO 225/75R15 117/112N E 10 Ply RWL

SKU CH-H30E-GTRA6

Highway all-season trailer tire, 225/75R15, load range E, 10-ply, speed rated 87 mph, raised white letters

  • Seasonal useAll-Season
  • Intended vehicleSpecial Trailer Service
  • Tire load index117/112
  • Tire speed ratingN
  • Package height8
  • Package length27
  • All-season traction for year-round towing confidence
  • Reinforced 10-ply construction handles heavy trailer loads
  • Highway rib tread improves steering response and stability
  • Speed rated up to 87 mph for highway use
  • Raised white letter sidewall adds classic trailer style

Trailer Tire 225/75R15 Load Range E

The Trailer Master ST PRO is a new all-season highway tire built specifically for special trailer service. Its reinforced radial construction maintains shape under heavy loads to increase carrying capacity and reduce sway while towing. The raised white letter sidewall adds a traditional look for trailer wheels. This tire is not intended for light trucks or passenger vehicles.

Dual Load Index 117/112 Speed Rating N

The single specification that decides fitment is the load index and speed rating combination of 117/112N. This rating supports a maximum load per tire at the higher single-wheel index and a lower dual-wheel index, with a top speed of 87 mph. Verify your trailer's gross axle weight rating and the manufacturer's recommended load index before purchasing.

Direct Bolt-On Fit for 15-Inch Rims

Installation is a standard tyre-to-rim mount on a 15-inch wheel; no special tools are required beyond normal tyre-changing equipment. The most common issue is attempting to use these ST-designated tires on light trucks, which voids the load rating and can cause premature failure. Ensure the rim width matches the 225 mm section width for proper bead seating.

How it compares

Measured against everything we stock in ATV, Car & SUV Tires, at today’s prices. Recalculated every night.

Price $78.99
Cheaper than about 58% of the 621 comparable items (median $87.99).

Specifications

Product
Brand nameTrailer Master
Display
Screen ratio75
Size & build
Package height8
Package length27
Package width27
Overall tire diameter28.3
Rim diameter15
Sidewall styleRWL: Raised White Letters
Size225/75R15
Tire size code225/75R15 117/112N E 10 Ply
Tire width225
Wheel diameter15 in (38.1 cm)
Tread depth9/32
Compatibility
Intended vehicleSpecial Trailer Service
Compatible vehiclesTrailer
More details
Seasonal useAll-Season
Tire load index117/112
Tire speed ratingN
Tire load rangeE (10 Ply)
Tire ply ratingE (10 Ply)
Run-flat capabilityNo
Tire categoryHighway

Questions about this item

What does the 117/112 load index mean for actual trailer weight?

The dual rating shows the maximum load each tyre can carry: 117 for single-wheel fitment and 112 when two tyres share an axle, matching the tyre's Load Range E construction.

How does the N speed rating limit highway use?

The N rating certifies the tyre for speeds up to 87 mph, so it is suited to normal highway towing but not sustained higher speeds.

What rim width and diameter does the 225/75R15 size require?

This tyre fits a 15 inch diameter rim; the 225 mm section width and 75 aspect ratio determine the approved rim width range for safe mounting.

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