Can I change a 295/80R22.5 tire for a 295/75R22.5? Differences, advantages, and what you need to configure in your truck.

More and more fleets are facing a technical question that can impact fuel consumption, performance, and even truck calibration:
What happens if I change the 295/80R22.5 tires that came with my truck from the factory for 295/75R22.5 ones?

This situation becomes common with trucks from brands like Scania This situation becomes common with trucks from brands or some brands like chinas, that arrive in Mexico with the size 295/80R22.5a tire that is not very common in the local market. Instead, the 295/75R22.5 .is the most commonly used size in Mexico and North America, with greater availability, better prices, and more options in brands, retreads, and recaps

What is the difference between a 295/80R22.5 and a 295/75R22.5?

Both tires have the Both tires have the same tread width (295 mm) y se montan sobre el mismo rin (22.5 pulgadas), but the sidewall height changes. but the profile height changes. (the ratio between the tire's width and the sidewall height):

Size	Approx. profile height	Approx. total diameter	Approx. revolutions/km
295/80R22.5	80% de 295mm = 236mm	~1044 mm (41.1”)	~479 revoluciones/km
295/75R22.5	75% de 295mm = 221mm	~1019 mm (40.1”)	~493 revoluciones/km

What does this mean?

• the 295/75R22.5 is lower:: unos 2.5 cm less in total diameter..
• Having a smaller diameter makes More revolutions per kilometer..
• This affects the the odometer reading,the Speedometer, and Final drive ratio..

What are the advantages of switching to 295/75R22.5?

Availability: It is the standard size in Mexico and North America, with many more options for brands, prices, and delivery times.

✅ CostoThey are usually affordable Than the 295/80R22.5, both new and retreaded.

✅ Maintenance and logisticsLower risk of running out of spare tires on the road. It is also easier to find retreads or casings for retreading.

What are the disadvantages?

❌ Necessary adjustments: The change in diameter Affects the revolutions of the drivetrain., which can alter:

• The reading of the Speedometer, (It will show more than the actual value.)
• The calculation of the mileage.
• The operation of the Cruise control Or automatic alerts if the truck is calibrated for the original size.

❌ Slightly more engine effort: By having more revolutions, there may be a there may be a slight increase in diesel consumption.Especially if you make long trips or highway routes.

What needs to be configured if I make the change?

If you decide to change from 295/80R22.5 or 295/75R22.5, is Key to configure the following in your truck:

1. Reprogram the ECM (Engine Control Module) for the new tire size. This corrects:

• Speed reading.
• Mileage calculation.
• Automatic transmission control (if applicable).

1. Check ABS and assistance systems.: Algunos sistemas modernos detectan variaciones en la rotación y podrían lanzar errores si las revoluciones por kilómetro cambian.
2. Calibrar flotas con GPS o telemetría: Si trabajas con plataformas que miden consumo por kilómetro, rendimiento de diésel o alertas de eficiencia, estas métricas pueden alterarse si no ajustas el nuevo perímetro de rodadura.

Conclusion

Si tu camión vino con llantas 295/80R22.5 y estás considerando pasarte a 295/75R22.5, el cambio sí es posible y puede representar ahorros importantes en el largo plazo.

Solo asegúrate de hacer los ajustes técnicos correctos, especialmente en el sistema electrónico del camión, para evitar errores en la operación, mantener la eficiencia y cuidar tu motor.

En Quinta ayudamos a nuestros clientes a tomar este tipo de decisiones con base en datos, rendimiento y compatibilidad. Si estás pensando en hacer este cambio, contáctanos y te ayudamos a evaluar si es lo ideal para tu operación.