Arrive Alive

Tyre Safety

TYRE SAFETY

Tyre failure is a vital factor in thousands of road accidents every year . Research by the CSIR indicates that nearly 20% of accidents involving minibuses have tyre failure as a contributing factor. It won't help if you have the best brakes on the market, but your tyres are worn. When braking, the idea is to have sufficient friction between the road surface and tyre to bring the vehicle to a stand still. If the tyres are worn there will not be enough friction and the tyre will slide over the road surface, not stopping the vehicle. This is also true for handling and steer ability. Look after you tyres!



Car Magazine online points out some rules for ensuring you have correct, safe tyres on your vehicle:

  • Tyres should always be replaced with the same size designation as recommended by the vehicle or tyre manufacturer.
  • Guard against used tyre imports, many of which are beyond retreading but are retreaded and sold illicitly. Similarly watch out for counterfeit tyres - illicit copies of respected brands. The advice is to always look for the SABS stamp of approval.
  • All four tyres should be of the same size, speed rating and construction (radial or crossply).
  • When two radial tyres are used with two crossply, put the radials on the rear axle. In some cases (especially commercial vehicles) the manufacturer might recommend different-sized tyres for the front and rear axles.
  • Never assume that the tyres on your vehicle are correct, even if you have newly purchased it. Unless you bought new from an authorised dealer your vehicle may already be fitted with potentially lethal tyres.

Over inflation/ Under Inflation

Over and under-inflation reduces tyre to road contact and shortens tyre life. The tyre responds in the same manner to under inflation as to overloading. The same applies to over inflation / under loading.

  • Over inflation / under loading - Reduces cushioning power of tyre. Tyre is more susceptible to impact, penetrations and abrasion. Reduced road-tyre contact. Negatively affects the handling characteristics of the vehicle. (Excessive centre wear.)
  • Under inflation / Overloading - The biggest single cause of "burst" tyres. Under inflation cases excessive flexing of the tyre sidewall which leads to overheating and ultimately, casing break-up and tread separation. Reduced tyre-road contact leads to poor handling and faster wear. (Excessive shoulder wear.)
  • Check tyre pressure once a week or before undertaking a long journey
  • Check tyre pressure early morning (low ambient temperature)

    Only use tyre sizes recommended by the manufacturers at the recommended inflation pressure

  • Cuts in the tyre could permit damp to reach the casing plies. This is harmful for both textile and steel casings and will affect safety and tyre life.
  • Wheel alignment - misaligned wheels will lead to excessive tyre wear. A worn steering mechanism, ball joints and wheel bearings will also reduce tyre life.

Consult your vehicle manual for the proper size and speed rating. Some tyres are now marked with letters to indicate their speed ratings. Tyre speed ratings do not imply that vehicles can be driven safely at the maximum speed for which the tyre is rated, particularly under adverse road and weather conditions, or if the vehicle has unusual characteristics. No matter how good your car, or its tyres, this is not justification for breaking speed limits. If a tyre burst, do not apply the brakes, rather use the momentum and gears to slow down the vehicle. A sudden change in direction or braking will result in loss of control over the vehicle. Rather lose one rim than your car and probably your life!

Also visit the following sections:

 

Loading...

Search Road Safety Articles

Latest Pages

Drunk Driving and Road Safety

Drunk Driving and Road Safety

Drunk Driving and Road Safety Drunk Driving is one of the biggest threats to Road Safety in South Africa. Research indicates that 50% of people who die on the roads have a blood alcohol concentration above 0.05 gram per 100 millilitres. Brief Summary: Legislation: The National Road Traffic

Read More

Compliance in the Road Freight Transport Industry in South Africa

Compliance in the Road Freight Transport Industry in South Africa

The South African freight transportation landscape fundamentally differs from that of the rest of the globe. In most other countries the fleet sizes comprise mostly of the owner of the transport business, who is also an “owner-driver” on one of his vehicles and maybe another couple of vehicles,

Read More

Treatment of and Response to Cuts and Bruises

Treatment of and Response to Cuts and Bruises

The skin is the largest organ of the human body, about 2m square in surface area and has several functions. It is also a barrier which provides protection from infection and heat loss. We need to remember that most cuts are minor and require little attention. The size of cuts, the number of cuts (also

Read More

Using Tourniquets to Stop Severe Bleeding

Using Tourniquets to Stop Severe Bleeding

With more and more South Africans are being exposed to trauma on a daily basis, as bystanders or witnesses, we are often the first people on the scene, especially Motor Vehicle Collisions (MVC). The quick initial point of wound care and treatment of potentially life-threatening injuries by bystanders

Read More

Running / Jogging and Road Safety

Running / Jogging and Road Safety

Background Information Road Safety is a concern not only for motorists but also for other road users such as pedestrians, cyclists and runners. Running injuries are quite common but can be reduced through proper conditioning and training programs; wearing the appropriate apparel and footwear and

Read More

Cycling Safety

Cycling Safety

Cycling safety has become a major concern on the South Africa roads as there has been a significant increase in the number of fatal road crashes and accidents involving cyclists. The Road Traffic Management Corporation has disclosed that the road deaths among our cyclists climbed from 320 in 2015

Read More

Load More Pages

Partners

View All