The size 7.50R16 is used on more than one type of commercial tire. Heavy truck products may carry G/14PR and 122/118 service descriptions, while other 7.50R16 products are marketed as light-truck tires with lower load indexes. Their pressures and capacities are not interchangeable.
For this reason, “7.50R16 = 112 psi” is not a safe rule. The 112 psi figure is a verified maximum-load endpoint for specific 14PR truck products. Actual operating pressure must be chosen from measured load and the current table for the installed tire.
7.50R16 14PR commercial truck reference
| Fitment | Load index | Maximum load per tire | Axle total at that rating | Published cold pressure |
|---|---|---|---|---|
| Single | 122 | 1,500 kg / 3,305 lb | 3,000 kg for two tires | 770 kPa / 112 psi |
| Dual | 118 | 1,320 kg / 2,910 lb | 5,280 kg for four tires | 770 kPa / 112 psi |
The same 122/118 maximum-load figures are published in current ZC Rubber and Double Coin truck catalogs for verified G/14PR products. The calculated axle totals assume equal load distribution and do not override the vehicle’s axle rating, wheel rating or legal load limit.
122/118J and 122/118L are different products
One verified mixed-service pattern is marked 122/118J, while regional products are available as 122/118L. Both cited specifications use 1,500 kg single and 1,320 kg dual loads at the maximum-load endpoint, but their speed symbols differ.
J corresponds to 100 km/h and L to 120 km/h. A J-rated tire cannot be treated as an L-rated tire simply because its ply rating, load indexes and maximum pressure match.
Suggested image: 7.50R16 G/14PR 122/118L sidewall.
Alt text: 7.50R16 tire pressure 14PR and 122/118L rating
Do not mix truck and light-truck ratings
The 7.50R16 size also appears on light-truck products with service descriptions such as 116/112R. That is a different rating family from the 122/118 truck specification. The higher R speed symbol does not compensate for the lower load indexes, and the pressure printed on one product must not be transferred to the other.
Read the complete sidewall, including LT or commercial designation, load range, service description and TT/TL marking. The sidewall markings guide provides a field-by-field explanation.
Tube-type and rim considerations
The verified 14PR truck examples are tube type. Use only an approved tube, flap, valve and rim combination. Check the rim for corrosion or damage and make sure the tube is not pinched or folded during mounting.
Construction must be confirmed for the exact product. Never insert a tube into an assembly unless the tire and rim manufacturers approve that configuration, and never use tube-type servicing procedures as a substitute for tubeless requirements.
Selecting cold pressure from load
- Measure the vehicle at normal operating load, preferably by wheel position.
- Use the single index for two-tire axles and the dual index for four-tire axles.
- Match the exact brand, pattern, load range, speed symbol and TT/TL construction.
- Obtain the manufacturer’s complete load-and-inflation table. Do not derive lower PSI from the 112 psi endpoint.
- Confirm the tire, tube, rim, valve, axle and vehicle limits.
Pressure is checked cold, before heat from driving changes the reading. Do not bleed a hot tire back to its cold target. Dual assemblies need compatible tires, matched remaining diameter, correct spacing and equal cold pressure. A formal fleet pressure-management procedure helps maintain these conditions.
Suggested image: comparison of 7.50R16 heavy-truck and light-truck sidewall ratings.
Alt text: 7.50R16 truck versus light truck tire rating comparison
Technical caveats
- The 112 psi value is a maximum-load endpoint for the cited 14PR truck products.
- Use 1,320 kg per tire, not the 1,500 kg single rating, in dual fitment.
- Keep J, L or R speed symbols attached to their specific load and product approval.
- Do not transfer a truck tire pressure to a 116/112R light-truck product.
- No unlisted lower pressure has been inferred here.
Frequently asked questions
There is no universal PSI. Use measured load and the current manufacturer table for the exact truck or light-truck product, fitment and service description.
No. It is the maximum-load pressure for the cited G/14PR 122/118 truck products. Other 7.50R16 specifications may use different limits.
The cited 14PR products are rated for 1,500 kg single and 1,320 kg per tire in dual fitment at their maximum-load endpoint.
The cited load ratings match, but J corresponds to 100 km/h and L to 120 km/h. The exact pattern and application approval still govern.
No. The 116/112R light-truck specification has different load indexes and product limits from a 122/118L commercial truck tire.
