Worn tractor tyres
When do they become a risk?

People generally tend to use their tractor tyres as long as possible because it costs a lot to change them, and we all have other, more pressing financial priorities for our farms – fertiliser, seeds, cattle feed, fuel, and so on.
However, once they reach a certain level of wear your tractor tyres can represent a risk for you and your farm. Here are some tips to make sure they won't give up on you in the middle of a job:

Worn tractor tyres

You must always remember the fact that your tyres are only link between your machine and the ground, which is why they're so important. Besides the cost of replacing a set of tyres or the excessive compaction caused by worn tyres, it's important you keep a look out for any signs of abnormal wear if you want to avoid hefty financial outlays further down the line.

 

How to tell when a worn tyre needs to be replaced

You can choose to keep using your tyres until they reach the maximum amount of wear (which is the cheapest option), or you can replace them as soon as they reach the wear threshold stated by the manufacturer.

Generally when tyre is worn you easily feel it on the field on wet conditions. In this case, you note the increase of your slip ratio. If you go over 30%, buy new ones !

The first and easiest indicator of tyre wear is to measure the height of the lugs on the tread. Tyres are considered worn when the studs have lost 60% of their height compared to when new, which is when you will begin to lose traction power in transmission on filed use.

Don’t be surprise if you feel better traction on field at 20% wear is due to the fact you reach the perfect statement for traction on field. We estimate that after 85% the traction drop heavily. It means in general a minimum of 12mm front and 15mm rear, depending of work conditions.

indicator of tyre wear

indicator of tyre wear

The latter option may seem like a waste of money, but on closer inspection you'll see that it actually makes the most financial sense. By reselling your tyre for a good price on the second-hand market just as it hits the wear threshold and opting for a new tyre that preserves your soil and increases your machine's traction force, with the added benefit of reduced fuel consumption, you'll soon realise that the second choice is the best way to keep your productivity at its maximum.

For example, if the lugs are 60mm high on a new tyre, it will be considered as worn when they are 23mm or less. You'll get a good price for reselling a tyre with this level of wear on the second-hand market, which will then help offset the cost of a new set of tyres.

» What do I do if wear is uneven?

First of all, you should determine the cause of any uneven wear to prevent your new tyres from getting worn too quickly. There could be many reasons for uneven wear, such as a mechanical problem, steering, or tyre pressure. You can delay or prevent any future wear by identifying uneven issue and solve it rapidly thanks to visit of your local tyre dealer or manufacturer tyre specialist.

 

Worn tyre: risk for productivity

Don’t think you win money by using your tyre till the end because it could cost you a lot at the end: 

The increase slip rate means less traction, so for the same job you burn more fuel and you need more time per hectare.

 


To learn more and boost your farm's profits, Bridgestone-Agriculture is offering you a free, detailed eBook that explains the essential role your agricultural tyres play in your productivity.

Download eBook: Increase the profitability of your operation

The information contained in this publication is for guidance purpose only. Whilst every effort has been taken in its production, no responsibility can be accepted for any loss or damage arising from any kind of undetected technical or commercial error contained in this content. Any data supplied in this publication is subject to possible revision following the date of publication. Due to the constant advance of tyre technology, the contents of this publication are subject to change without notice.