Regardless of the brand of tyres on your vehicle, you must be aware of their characteristics, maintenance instructions and other variables that are essential to getting the best performance and containing your costs.
MOUNTING AND DISMOUNTING
Use adequate tools and lubricants to mount and dismount tyres. Do not use substances derived from petroleum. They can damage the tyre.
TUBES AND BELTS
SECURITY LIMITS – TREAD WEAR INDICTOR (TWI)
Tyres should not be used when the tread wear indicator is exposed in any tyre tread. The tread wear indicator bars are moulded into the tread and are located at the bottom of the tread grooves in several locations around the tyre. When the tyre is worn-out where any of them become visibly flushed with the adjacent tread ribs, it is time to replace the tyre (Tread depth limit 1.6 mm.).
ROTATE THE TYRES
Due to the irregularities of the road, tread wear will not be uniform and tyre rotation is recommended to help improve tyre performance.
VEHICLE MECHANICAL MAINTENANCE
Well-maintained alignment, suspension and steering components helps to improve toughness of your tyres and promote uniform tread wear.
Balancing helps to provide correct distribution of the tyre mass along the circumference of the tyre and rim assembly. With the proper balancing of your tyres, you avoid vibration, shimmy and irregular tread wear.
The correct air pressure to inflate your tyres is determined by their load index. Weigh your vehicles as a normal practice to verify the load that each position of the vehicle has and the total load of the vehicle. Use the table of air pressures to determine the correct inflation of your tyres.
VERIFICATION OF AIR PRESSURE
The air pressure of your tyres has to be monitored periodically and has to be done with professional air pressure gauges. Remember to always check air pressure when tyres are cold.
Load Index determines the maximum weight a tyre can carry. It is an industry standard that determines the maximum service load on a tyre at the correct air pressure.
For more information, view the table showing the correct load index of each tyre for single and tandem axles.
The correct air pressure must be in accordance with the position of the tyre on the vehicle and the total load (single axle or tandem axle). This helps to promote better performance of the tyre, more kilometres run, keeps the carcass in good condition for future retreads and helps uniform tread wear. The table indicates the correct air pressure of each tyre according to its load index.
Read the line of the tyre size (295/80R22.5) where the load index is (152/148), check the load by tyre in the tandem axle line the corresponding load (2740) and in the single axle line, check which is the load for each tyre (2730). When you locate the load in kg in the corresponding line, you must use the air pressure determined at the top of the column and use it to inflate your tyre.
Tandem axle assembly for a load of 2740 Kg by tyre, recommended pressure 105 lb.
Determines the maximum speed a tyre can run with a maximum load that corresponds to its load index, as specified by the tyre maker. See the table with technical information of each tyre in the Tyre Applications Guide to know the tyre speed symbol.
EXAMPLE: TYRE 295/80R22.5 G358 152/148 L
It is possible to transport more weight that the one determined in the load index only if the operation maximum speed decreases according to what is established in the speed symbol table.
This table shows this relationship.
*(1) Speed (km/h): It is considered, for the above table, as the maximum speed the vehicle can reach completely loaded.
EXAMPLE: TYRE 295/80R22.5 G358 152/148L
a) Bias and Radial Tyres and millimetre with “F” load capacity use column L=120.