How to choose the right OTR tyre and reduce on operating cost

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Tyres play an essential role in keeping your vehicles on the move, no matter what kind of industry you operate in. No matter if you transport raw materials in mining & earthmoving, hauling freight across the country or you handle containers at terminal sites and ports, keeping your fleet up and running is crucial. Downtime is incredibly expensive and in most cases easily avoidable. Paying attention to how you use and choose your OTR tyres is one of those easily applicable steps to significantly increase efficiency and reduce your total operation costs.

Choose the right OTR tyre for the application

The most important way of reducing tyre degradation and unnecessary wear is choosing the right OTR tyre for the job, to determine which tyre suits your application best, we need to look at the various construction methods.

All tyres are predominantly made of multiple rubber components. The biggest differences among the various OTR tyres is the way the internal steel reinforcements are placed within the tyre. Radial tyres are constructed with a series of steel cords that run across the tread. Radial tyres are mainly developed to be more shock absorbing for uneven surfaces.

Another construction method that also uses steed beads is the bias / diagonal tyre. The beads are placed at an angle of 30 to 40 degrees instead of in a straight manner. For additional strength, plies of nylon are placed at opposing angles to create a crisscross pattern that provides additional strength. The bias / diagonal tyre offers a smoother ride on rough surfaces and can handle heavier loads. That is why the bias / diagonal tyre is commonly used in industries such as mining and earthmoving.

If your machinery operate on smooth surfaces or on sites with a high risk of punctures, the third option is a solid tyre. The solid tyre is, as the name suggest, a tyre made of solid materials so is unaffected by sharp materials that would cause damage to pneumatic tyres. These tyres are perfect for dozers on scrapyards or forklifts

Calculate tonne kilometer per hour for the perfect fit

The best way to determine which tyre is the perfect fit for your machinery is to calculate it. Of course, rim size is the most important factor to actually choose a tyre that fits, but rim size doesn’t tell you much more than that. The tonne kilometer per hour index indicates what loads your tyre can handle and is determined by the tyre compound and materials used.

OTR Tyre manufacturer Magna Tyres Group has recently published* an article explaining how to use the formula in easy steps, so even those without a degree in mathematics can use it. For your convenience, we will try to summarize it.

The main formula is as follows: TKPH = (mean tyre-load) x (average work-shift speed)

The ‘mean tyre-load’ means the average between two extreme values. In this case, it means the weight of a vehicle without a load and the weight of a fully loaded vehicle. If you divide those two numbers by two, you know what weight you vehicle carries on average.

The ‘average work-shift speed’ aims to calculate the actual covered kilometers. This means is calculates the distance a tyre has to travel to haul a load from point A to point B and back. This so called ‘round trip’ takes a certain amount of time, so in a single work-shift this round trip can be done a certain amount of times. If you multiply the round trip distance with the amount of times a round trip is done, you know the amount of kilometers a tyre travels in a shift.

The last step to take is to divide the outcome by the total hours of operation and you know the average work-shift speed. We know this sounds complicated, but if you follow the formula step-by-step, it’s less mind-blowing than you might think. Like we stated earlier, the article Magna Tyres Group wrote on their website is your best bet for a better explanation.

Extend tyre life

If you finally have chosen the right OTR tyre for your purpose, you want them to last as long as possible. Although most ‘tips’ might be quite logical, you’d be surprised how often this basic knowledge is overlooked. First and foremost, check your tyre pressure regularly. It is proven there’s a direct connection between tyre life and tyre pressure. While overinflating makes a tyre more vulnerable to cuts, underinflating will put more stress on the tyres than necessary and result in a heavier wear and a shorter tyre life. It might seem like a given, but the correct tyre pressure is the most important factor in tyre life.

Another important factor to keep in mind is not to overload your vehicle. Consistently overloading your vehicle allows to make fewer trips while carrying the same amount of freight, but will damage the tyres in the long run. Frequent overloading causes major deformation at the edges of the tyre, which leads to a faster decline of tyre health.

Get the most out of your OTR tyres with Magna Tyres

These tips might seem like open doors, but consistently paying attention will pay out in the long run. If you’re looking for more tips and tricks** to extend your OTR tyre life, make sure you visit the Magna Tyres Group website. Magna Tyres is not only the biggest supplier of second tier OTR tyres, they also offer market insights and general help to get the most out of your OTR tyres. Magna Tyres keeps you on the move with the best tyre solutions, so if you have questions regarding which tyre suits your OTR machinery best or how to use them, make sure to contact them.

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