Roadmaster® RM230 WB™

  • Mixed Services
  • All Position
  • Steer Position
  • M+S Rated

The RM230 WB™ is a steer all-position, heavy-duty, wide-base tire for mixed service applications.

Tire Features

Aggressive All-Position Tread Design

The aggressive tread pattern has biting edges to handle rock and gravel terrain and helps provide all-position traction and handling for on- and off-road applications.

Cut And Chip Tread Compound

The tread compound helps resist cuts and chips in mixed service applications.

Four Heavy-Duty Steel Belts

Four heavy-duty steel belts promote durability in heavy-haul applications while also preserving the casing for retread.

Stone Protectors

Stone protectors in the tread grooves help protect the casing from stone penetration and help resist stone retention.

Curb Bar With Sidewall Depth Indicator

The curb bar with sidewall depth indicator helps protect the sidewall from scuffing damage and assist in indicating when a tire should be rotated to preserve the casing for retreading.

Warranties & Guarantees

2023 Commercial Replacement Tire Guide, Limited Warranty & Registration Booklet For Cooper® & Roadmaster® Tires


Tire Specifications
Tire Specifications

Full Specs

Load Range
Tire Size
  • Tire Size 425/65R22.5
  • Static Loaded Radius 0 in/ 0 mm
  • Load Range L
  • Tread Depth 22.5 / 18 mm
  • Revs 466 mile/ 290 km
  • Max Speed 68 mph/ 42 kmh
  • Tire Weight 199.3 lbs/ 90.4 kgs
  • Approved Rim Width 12.25-14.0 in
  • Single Max Load 11400 lbs/ 5170.9 kgs
  • Overall Diameter 0 in/ 0 mm
  • Single Inflation Pressure 120 psi/ 827 kpa
  • Overall Width 16.8 in/ 427 mm
  • Dual Max Load 0 lbs/ 0 kgs
  • Overall Width Loaded 16.8 in/ 427 mm
  • Dual Inflation Pressure 0 psi/ 0 kpa