295/75R22.5 Tire Pressure Guide: Correct PSI by Axle Load

The correct pressure for a 295/75R22.5 truck tire cannot be determined from tire size alone. It depends on the actual axle load, tire model, load range, wheel position, and whether the tire operates in a single or dual configuration.

A steer tire carrying 6,000 pounds does not necessarily require the same pressure as a drive or trailer tire carrying 4,250 pounds. Even when all tires share the same 295/75R22.5 size, their operating loads can be significantly different.

The correct method is to:

1. Weigh the loaded truck by axle or axle group.
2. Calculate the load carried by each tire.
3. Consult the load-and-inflation table for the exact tire model.
4. Establish a fleet target pressure that keeps the tire safely above the required minimum.

The pressure molded onto the tire sidewall is associated with the tire’s rated load and is not automatically the correct operating pressure for every truck or axle position.

295/75R22.5 Tire Pressure Quick Reference

The following ranges are general operating references only. They are not universal pressure recommendations.

Axle position	Typical configuration	General operating range
Steer axle	Two single tires	100–120 PSI
Drive axle	Dual tires	85–110 PSI
Trailer axle	Dual tires	85–110 PSI

The correct pressure may fall outside these ranges depending on the tire model, load range, axle weight, operating speed, and vehicle application.

Always verify the required pressure using the latest manufacturer load-and-inflation table for the exact tire installed on the vehicle.

What Is the Correct Pressure for a 295/75R22.5 Tire?

There is no single correct PSI for every 295/75R22.5 tire.

The required pressure depends on several factors:

• Actual axle or axle-group weight
• Number of load-bearing tires
• Single or dual configuration
• Tire manufacturer and model
• Load range and load index
• Maximum expected payload
• Operating speed
• Tire, rim and wheel pressure limits
• Left-to-right and axle-to-axle load distribution
• Fleet operating conditions

Two trucks using the same tire size may require different pressures because their axle loads and tire specifications are different.

A fully loaded highway tractor may place a relatively high load on each steer tire. Its tandem drive group distributes its weight across eight tires, so the individual load carried by each drive tire may be substantially lower.

For this reason, setting every tire to the same pressure can produce unnecessary differences between the pressure available and the pressure actually required to support the load.

Minimum Cold Inflation Pressure vs Fleet Target Pressure

A load-and-inflation table provides the minimum cold inflation pressure required to support a specified tire load. It should not automatically be treated as the fleet’s final operating target.

Fleets should distinguish between two pressure values.

Minimum cold inflation pressure

The minimum cold inflation pressure is the lowest pressure shown in the tire manufacturer’s table that can support the calculated load carried by each tire.

If the calculated tire load falls between two values in the table, select the next higher pressure entry. Do not round down.

Fleet target pressure

The fleet target pressure is the cold inflation pressure established by the fleet for daily operation.

It may be set modestly above the table minimum to account for:

• Pressure-gauge tolerance
• Normal air loss
• Temperature changes
• Reasonable payload variation
• Time between maintenance inspections

For example, if the manufacturer’s table indicates that 95 PSI is the minimum pressure required for the measured tire load, a fleet may establish a target of 100 PSI.

The additional margin helps prevent ordinary operating variation from allowing the tire to fall below its required minimum pressure.

This example does not mean every fleet should automatically add 5 PSI. The margin must reflect the fleet’s operating conditions, pressure-maintenance program, payload consistency, and measurement accuracy.

A fleet target must also remain within the pressure limits of the tire, rim, wheel and valve assembly.

In simple terms:

The load-table value answers: What is the minimum cold pressure required to support this load?

The fleet target answers: What cold pressure should the maintenance team set so the tire remains safely above that minimum during normal operation?

295/75R22.5 Load and Inflation Table

The values in this section should be verified against the latest technical publication from each tire manufacturer.

Load capacity can vary between tire models even when the tires have the same nominal size. Differences in load range, load index, casing construction and manufacturer specifications must be considered.

295/75R22.5 Single Tire Load and Inflation Table

Use the single-load table for applications with one tire on each side of the axle, such as a conventional steer axle.

295/75R22.5 Dual Tire Load and Inflation Table

Use the dual-load table when two tires are mounted on each side of an axle.

Dual load capacity is not always exactly twice the published single-tire capacity. Always use the manufacturer’s dual-load column rather than doubling the single-load value.

295/75R22.5 Manufacturer Specification Comparison

The following comparison covers four Load Range H commercial truck tires in size 295/75R22.5. Although the four products have the same published maximum single and dual load capacities, their physical dimensions, tread depths, revolutions per mile and approved rim specifications are not identical.

Maximum-load pressure should not be interpreted as the recommended operating pressure for every vehicle. The correct minimum cold inflation pressure must be selected from the complete load-and-inflation table for the exact tire model and actual load.

Goodyear 295/75R22.5 Load and Inflation Data

Goodyear Endurance LHS 295/75R22.5

The Goodyear Endurance LHS is a Load Range H steer and all-position tire intended for long-haul, LTL and super-regional service.

Goodyear lists the Endurance LHS at 514 revolutions per mile, compared with 517 revolutions per mile for the Michelin and Continental products in this comparison. Published dimensions are nominal values; actual mounted dimensions can also be affected by rim width, inflation pressure, load and tread wear.

Bridgestone 295/75R22.5 Load and Inflation Data

The Bridgestone R283 Ecopia is a commercial steer and all-position tire intended for long-haul and regional applications.

The 149 single-load index corresponds to a maximum published capacity of 7,160 pounds per tire. In dual service, the 146 load index corresponds to 6,610 pounds per tire.

The supplied product information does not show the inflation pressure associated with these maximum loads. That value should be completed using Bridgestone’s current technical data book for the R283 Ecopia.

Michelin 295/75R22.5 Load and Inflation Data

The Michelin X Line Energy Z+ is a Load Range H line-haul steer and all-position tire.

The first wheel listed is the measuring wheel. The 123 PSI value is the pressure associated with the published maximum rated load; it is not necessarily the appropriate operating target for a lighter axle load.

Continental 295/75R22.5 Load and Inflation Data

The Continental Conti HSL 3 is offered in both Load Range G and Load Range H. The values below apply specifically to the Load Range H version shown in the supplied product data.

The Conti HSL 3 has the deepest original tread among the four products in this comparison at 20/32 inch. Its diameter and revolutions per mile should still be considered when matching it with other tires in a dual assembly.

Maximum Load Comparison

Tire	Tread depth	Maximum single load	Maximum dual load	Pressure at maximum load
Bridgestone R283 Ecopia	18/32 in	7,160 lb / 3,250 kg	6,610 lb / 3,000 kg	To be confirmed
Michelin X Line Energy Z+	18/32 in	7,160 lb / 3,250 kg	6,610 lb / 3,000 kg	123 PSI / 850 kPa
Continental Conti HSL 3	20/32 in	7,160 lb / 3,250 kg	6,610 lb / 3,000 kg	123 PSI / 850 kPa
Goodyear Endurance LHS	18/32 in	7,160 lb / 3,250 kg	6,610 lb / 3,000 kg	123 PSI / 850 kPa

The maximum-load values do not establish the required pressure at partial loads. To determine the correct minimum cold inflation pressure at a lower load, use the complete load-and-inflation table for the exact tire model.

Dimensional Comparison

Tire	Overall diameter	Overall width	Loaded radius	Minimum dual spacing	Revs per mile
Bridgestone R283 Ecopia	Not provided	Not provided	Not provided	Not provided	Not provided
Michelin X Line Energy Z+	40.1 in / 1,019 mm	11.1 in / 282 mm	18.7 in / 475 mm	13.1 in / 332 mm	517
Continental Conti HSL 3	40.0 in / 1,017 mm	11.5 in / 292 mm	18.7 in / 474 mm	12.5 in / 318 mm	517
Goodyear Endurance LHS	40.4 in / 1,026 mm	11.3 in / 287 mm	18.8 in / 477 mm	12.9 in / 327 mm	514

These dimensional differences are relatively small, but the model name “295/75R22.5” does not guarantee identical overall diameter, loaded radius or revolutions per mile across manufacturers.

For dual applications, tires should be matched according to the fleet’s tire-manufacturer guidance and applicable industry tolerances. Nominal data-book dimensions should not replace an inspection of actual mounted tire diameter, inflation pressure and remaining tread depth.

Important Comparison Note

Values from different manufacturers should only be compared when the following specifications are clearly identified:

• Exact tire model
• Load range
• Load index
• Single or dual configuration
• Maximum operating speed
• Measurement unit
• Source publication date

If metric values are converted to PSI and pounds, label them as converted values. If a value is interpolated rather than directly published by the manufacturer, it should not be presented as an official manufacturer specification.

How to Calculate 295/75R22.5 Tire Pressure from Axle Weight

Correct inflation begins with the actual load carried by the tires.

Gross vehicle weight alone is not sufficient because weight is not distributed equally between the steer, drive and trailer axles.

Step 1: Weigh the loaded truck

Weigh the truck in a representative loaded condition.

For the most useful result, obtain separate weights for:

• Steer axle
• Drive axle or tandem drive group
• Trailer axle or tandem trailer group

The weighing condition should reflect the highest normal payload the vehicle is expected to carry—not an empty or unusually light trip.

Individual wheel-position weights provide the best information because the load may not be distributed evenly from left to right. When individual wheel weights are unavailable, axle or axle-group weight can be used to calculate an average tire load.

Step 2: Identify the tire configuration

Determine how many tires support the measured axle or axle group.

Common configurations include:

Configuration	Number of tires
Conventional steer axle	2
Single axle with dual tires	4
Tandem axle group with dual tires	8
Tridem axle group with dual tires	12

Count the tires that actually support the measured load.

Step 3: Calculate the average load per tire

Use the following formula:

Load per tire = measured axle or axle-group weight ÷ number of load-bearing tires

For a 12,000-pound steer axle with two tires:

12,000 ÷ 2 = 6,000 pounds per tire

For a 34,000-pound tandem drive group with eight tires:

34,000 ÷ 8 = 4,250 pounds per tire

These calculations assume the load is evenly distributed. Actual tire loads may be higher on one side or one axle because of cargo placement, fifth-wheel position, suspension condition, road crown or vehicle configuration.

Step 4: Consult the correct manufacturer table

After calculating the load per tire:

1. Confirm the exact tire manufacturer and model.
2. Confirm the load range or load index.
3. Select the single or dual column.
4. Locate the calculated tire load.
5. If the exact load is not listed, move to the next higher table value.
6. Record the corresponding minimum cold inflation pressure.

Do not use the single-tire column for tires operating in a dual assembly.

Do not use a table from another manufacturer unless the tire manufacturer confirms that the values apply.

Step 5: Establish the fleet target pressure

The manufacturer table establishes the required minimum cold pressure for the calculated load.

The fleet can then establish an operating target that considers:

• Maximum expected axle load
• Frequency of pressure inspections
• Normal air-loss rate
• Temperature variation
• Gauge accuracy
• Payload consistency
• Fleet maintenance capability

The target should be documented by tire size, axle position, vehicle group and application so drivers and technicians do not have to make individual estimates during routine inspections.

Real-World 295/75R22.5 Pressure Examples

The examples below demonstrate the calculation process. Final pressure values must be completed using the load table for the exact tire model.

Example 1: 12,000-Pound Steer Axle

A tractor has a measured steer-axle weight of 12,000 pounds and uses two 295/75R22.5 tires.

Item	Result
Measured axle weight	12,000 lb
Number of tires	2
Average load per tire	6,000 lb
Manufacturer table minimum	[Add PSI]
Fleet target pressure	[Add PSI]

Calculation:

12,000 lb ÷ 2 tires = 6,000 lb per tire

The fleet must locate 6,000 pounds in the single-tire column for the exact tire model. If 6,000 pounds falls between two published values, the next higher pressure entry should be selected.

Example 2: 34,000-Pound Tandem Drive Group

A tractor has a measured tandem drive weight of 34,000 pounds. The tandem group uses eight tires in dual configuration.

Item	Result
Measured tandem-group weight	34,000 lb
Number of tires	8
Average load per tire	4,250 lb
Manufacturer table minimum	[Add PSI]
Fleet target pressure	[Add PSI]

Calculation:

34,000 lb ÷ 8 tires = 4,250 lb per tire

The fleet should use the dual-load column. Dividing the tandem weight by four would incorrectly double the calculated load per tire.

This calculation represents an average. If one drive axle or one side carries more weight than the others, the highest measured tire load should govern the pressure decision.

Example 3: 28,000-Pound Tandem Trailer Group

A partially loaded trailer has a measured tandem-group weight of 28,000 pounds and eight tires.

Item	Result
Measured tandem-group weight	28,000 lb
Number of tires	8
Average load per tire	3,500 lb
Manufacturer table minimum	[Add PSI]
Fleet target pressure	[Add PSI]

Calculation:

28,000 lb ÷ 8 tires = 3,500 lb per tire

This example illustrates why maximum sidewall pressure is not automatically required for every trailer operation. The correct pressure must still be verified against the manufacturer’s dual-load table and the maximum payload the trailer is expected to carry.

Steer, Drive and Trailer Pressure Differences

Steer axle pressure

Steer tires typically carry more load per tire because a conventional steer axle uses only two tires.

The steer-axle pressure decision should consider:

• Actual loaded steer-axle weight
• Single-tire load capacity
• Tire load index
• Wheel and rim rating
• Vehicle handling
• Operating speed
• Maximum expected load

A common PSI value used by another fleet is not sufficient evidence that the same pressure is correct for a different vehicle.

A heavily loaded steer axle may require pressure near the upper portion of the tire’s permitted range. A lighter steer axle may require less. The manufacturer’s single-load table must make that determination.

Drive axle pressure

Tandem drive weight is commonly distributed across eight tires. This often produces a lower average load per tire than on the steer axle.

Drive duals also require close matching. Differences in pressure, overall diameter or tread depth can cause one tire to carry more load than its mate.

A low-pressure tire in a dual assembly may be overloaded while the adjacent tire is forced to carry additional weight. Therefore, selecting the correct fleet target is only one part of the maintenance process; pressure consistency between dual mates is equally important.

Trailer axle pressure

Trailer tire loads can change significantly between trips.

Setting pressure based only on an empty or partially loaded trailer can leave insufficient capacity when the trailer later carries a heavier payload. Conversely, automatically using maximum pressure for every trailer may not provide the best balance of load support, tread wear and casing performance.

The fleet target should reflect the maximum normal operating load and the fleet’s ability to control trailer assignments and payload variation.

295/75R22.5 Load Range G vs Load Range H

295/75R22.5 tires may be available in different load ranges or load indexes.

Load Range G and Load Range H tires should not be treated as identical simply because they share the same nominal size.

Specification	Load Range G	Load Range H
Maximum single load	[Add value]	[Add value]
Maximum dual load	[Add value]	[Add value]
Maximum rated pressure	[Add value]	[Add value]
Applicable load index	[Add value]	[Add value]
Typical application	[Add value]	[Add value]

A higher load range provides a different rated load-and-pressure capability. It does not mean the tire should automatically be inflated to its maximum rated pressure.

The correct operating pressure must still be determined from actual load.

Before replacing a Load Range G tire with a Load Range H tire—or the reverse—verify:

• Vehicle requirements
• Tire model specifications
• Wheel and rim pressure capacity
• Axle rating
• Operating load
• Manufacturer guidance

Common 295/75R22.5 Inflation Mistakes

Using maximum sidewall PSI as the daily target. The sidewall marking identifies the tire’s rated load and associated pressure. It is not a universal recommendation for every axle load.

Running the same pressure on every axle. Steer, drive and trailer tires often carry different loads per tire. Equal pressure is not automatically correct pressure.

Dividing tandem weight by four instead of eight. A conventional tandem group with dual tires has eight load-bearing tires. Dividing the group weight by four incorrectly doubles the calculated average load per tire.

Using the single-load column for dual tires. Single and dual load capacities are different. Always use the column that matches the installed configuration.

Using another manufacturer’s table. Two 295/75R22.5 tires may have different load indexes, maximum pressures or published load values. Use the table for the exact tire model.

Setting pressure from an empty-truck weight. Pressure must support the vehicle’s expected operating load. An empty measurement may not represent the maximum load the tires will carry.

Checking pressure after the tire becomes hot. Load-and-inflation tables are based on cold inflation pressure. Pressure naturally rises as the tire operates and heats up. Do not release air from a normally heated tire simply to return it to the cold target.

Ignoring left-to-right load imbalance. An axle-scale ticket may show the total axle load but not reveal side-to-side imbalance. Uneven cargo distribution can cause one tire or dual assembly to carry more than the calculated average.

Ignoring wheel and rim limits. The tire is not the only component with a pressure rating. The rim, wheel and valve assembly must also be suitable for the selected target pressure.

Cold Weather and Hot Tire Pressure

Commercial truck tire pressure should be checked when the tires are cold.

In practical fleet operations, “cold” means the tire has not accumulated significant heat from highway operation. A consistent inspection condition is important because comparing hot readings with cold targets can lead to incorrect adjustments.

Ambient temperature also affects pressure. As temperature falls, cold tire pressure normally decreases. This is particularly important for Canadian and northern U.S. fleets operating through large seasonal temperature changes.

A tire adjusted correctly during warm weather may fall below the fleet target after a substantial drop in ambient temperature.

Fleet maintenance procedures should therefore include:

• More frequent cold-pressure checks during seasonal transitions
• Calibrated pressure gauges
• Clearly documented cold targets
• Regular inspection for slow leaks
• Reassessment after major payload or route changes

Normal pressure growth during operation should not be corrected by bleeding air from a hot tire. If a hot tire appears unusually high or low compared with its mates, inspect it for loading, mechanical or inflation problems and recheck it under a consistent cold condition.

295/75R22.5 Inflation Checklist

Before setting pressure:

• Confirm the tire size is 295/75R22.5.
• Identify the exact manufacturer and model.
• Confirm the load range and load index.
• Check whether the tire operates in single or dual configuration.
• Verify the rim, wheel and valve pressure limits.
• Weigh the vehicle at a representative operating load.

When calculating pressure:

• Record each axle or axle-group weight separately.
• Count the number of load-bearing tires correctly.
• Calculate average load per tire.
• Use the correct manufacturer table.
• Select the single or dual column.
• Move to the next higher entry if the exact load is not listed.
• Establish a documented fleet target.

During routine maintenance:

• Check pressure cold.
• Use a calibrated gauge.
• Inspect for air leaks.
• Compare pressure between dual mates.
• Check dual-tire tread depth and diameter compatibility.
• Reweigh the vehicle when its configuration or normal payload changes.
• Investigate repeated pressure loss rather than repeatedly adding air.

Frequently Asked Questions

Key Takeaways

• Tire size alone does not determine the correct pressure.
• Use actual axle or axle-group weight.
• Calculate load per tire using the correct number of tires.
• Use the single-load column for single tires and the dual-load column for dual assemblies.
• Treat the table value as the minimum cold pressure required for the calculated load.
• Establish a documented fleet target that accounts for normal operating variation.
• Do not exceed tire, rim, wheel or valve pressure limits.
• Recalculate pressure when vehicle configuration or expected payload changes.
• Always verify values using the latest data for the exact tire model.

Manufacturer and Industry References

• Goodyear Commercial Tire Data Book: [Add direct link and publication date]
• Bridgestone Commercial Truck Tire Data Book: [Add direct link and publication date]
• Michelin Truck Tire Data Book: [Add direct link and publication date]
• Continental Commercial Vehicle Tire Data Book: [Add direct link and publication date]
• Tire and Rim Association standards: [Add reference]
• Technology & Maintenance Council recommended practices: [Add reference]

Important notice: This guide is intended for educational and fleet-planning purposes. Always verify inflation pressure using the latest load-and-inflation table for the exact tire model installed on the vehicle. Do not exceed the rated pressure or load limits of the tire, rim, wheel, valve or axle assembly.

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