Tire Pressure Control System

TIREMAAX PRO Tire Pressure Control System

TIREMAAX PRO, an advanced automatic tire pressure control system for the trailer industry that is capable of actively inflating or relieving the tires to a preset pressure level. Its straightforward mechanical design balances tire pressure at every wheel position by continuously monitoring and adjusting tire pressure through the inflation or relief of the tires based on changing environmental conditions -- an important feature for achieving maximum tread life in any tire configuration.

TIREMAAX PRO Tire Pressure Control System

Features and Benefits

Increase Tire Life, Fuel Mileage and Productivity

  • Automatically checks tire pressure
  • Directs air to tires that fall below a preset pressure level
  • Trailer-mounted indicator alerts operator to system status
  • Bolt-in, ball-bearing rotary union
  • Aids in reducing run-flat failures and improving casing life

Increase Your Uptime

  • Helps extend service intervals for tires
  • Helps reduce costly roadside service due to tire failures

Calm Your Frustration Level

  • Backed by Hendrickson full-service support professionals
  • Check valves help prevent tire pressure loss back through system
  • Independent trailer-based system — no tractor modifications required
  • Manual pressure check and fill available at hose end
  • May be combined with any INTRAAX or VANTRAAX wheel-end configurations
  • No modification required to tire or wheel
  • In-line check valves isolate each tire
  • Seal or line leaks will not pressurize wheel ends
  • Does not pressurize the axle tube
  • Incorporates the patented Hendrickson axle filter
  • Vents through the axle to help prevent wheel-end contamination
  • Trailer-mounted indicator illuminates only when maintenance is required
  • Serviceable filter at supply port helps keep lines and seals clean
  • Comes preprogrammed in pressure settings from 70 to 120 psi in five-psi increments
  • An integrated pressure control unit allows target pressure to be reset to any value other than the factory preset value
  • Checks tire pressure continuously without pressurizing the axle or wheel ends
  • Indicator comes on when system flow exceeds approximately 0.7 cfm
  • Supply port takes 1/4-inch NPT fitting, delivery port takes 1/8-inch NPT fitting


TIREMAAX Configuration PSI Range (in 5 psi increments)*
TIREMAAX PRO 85 to 120
TIREMAAX CP 70 to 120

*Cold target pressure setting is selected by customer and factory programmed.


File Name Rev. Date Size
L1017 - TIREMAAX® Tire Inflation System Flyer J 01/20 1.04 MB
L1017FR TIREMAAX French brochure I 03/19 1.04 MB
L1199 - TIREMAAX PRO Sales Brochure D 03/19 0.84 MB
L1256 - TIREMAAX Thermoplastic Tire Hoses C 11/20 0.19 MB
L1299 - Trailer Solutions Brochure A 05/19 2.92 MB
L1305 - Understanding Trailer Tire Pressure White Paper - 03/17 0.97 MB
L827 - HTIS Tire Inflation Pressure Programming 04/03 0.03 MB
L867 - TIREMAAX® Hand-Held Programming Device Operation A 06/07 0.54 MB
L869 - TIREMAAX® Components Data Sheet - 04/04 0.56 MB
L941 - TIREMAAX® Rotary Union Spanner Wrench Use - 11/06 0.05 MB
Ordering Guides
E868 - TIREMAAX Electronic Ordering Guide Q 11/20 0.2 MB
L868 - TIREMAAX® Ordering Guide Q 11/20 0.1 MB
Parts List
L1000 - Trailer Suspension Systems Recommended Stocking List - Master Warehouse/PDC N 09/20 0.22 MB
L1181 - Trailer Suspension Systems Recommended Stocking List - Dealer/Branch L 08/20 0.21 MB
L1182 - Controls Parts Catalog I 03/20 1.83 MB
L878 - TIREMAAX® Parts List Q 11/20 1.7 MB
B113 - TIREMAAX® Spindle Plug Installation Depth Dimensions 11/04 0.17 MB
B116 - TIREMAAX® Alternative Wheel Removal Procedure - 08/05 0.09 MB
B117 - Manually Checking Tire Pressure with TIREMAAX® - 11/05 0.05 MB
L1077 - TIREMAAX® EC to TIREMAAX® CP Conversion Instructions 07/08 0.87 MB
L786 - HTIS Installation, Service and Troubleshooting Procedures A 12/03 2.34 MB
L818 - TIREMAAX® EC Tire Inflation System Installation, Service and Troubleshooting Procedures E 10/07 3.16 MB
L828 - Tire Hose and Tee Fitting Guard Installation Procedure C 10/06 0.18 MB
L844 - Installation Instructions For Rotary Union Replacement Kits A 11/06 0.48 MB
L865 - TIREMAAX® EC Controller Assembly Replacement Procedure - 04/04 0.38 MB
L902 - TIREMAAX® EC & CP General Installation Poster- purchased before March 2012 B 02/08 0.62 MB
L995 - TIREMAAX® CP Tire Inflation System Installation, Service and Troubleshooting Procedures A 02/12 6.36 MB
T19002 - Trailer Patent Information O 02/21 0.14 MB
T51002 - TIREMAAX CP & PRO Technical Procedure G 10/19 6.53 MB
T51003 - TIREMAAX PRO & CP General Installation Poster E 01/17 1.2 MB
T51005 - TIREMAAX Information and Requirements - 11/19 0.5 MB
T52001 - TOOLBOX TIP: TIREMAAX® PRO PSI Setting A 05/17 0.74 MB
T52003 - TOOLBOX TIP: TIREMAAX PRO Clocking the Hubcap 1 11/19 0.83 MB


Calculate the Return on Investment for your fleet by installing TIREMAAX PRO Tire Inflation System on your trailers.

Calculate Savings


TIREMAAX PRO balances tire pressure at every wheel position. Continuous monitoring and adjusting of tire pressure is based on changing environmental conditions.

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