Minggu, 21 Agustus 2011

Factors to take note of Run Flat Tyres

By Chris J Dutton


Retro Fitting

Always consult the automobile or tyre manufacturer regarding which vehicles are suitable for the fitment of Run Flat tyres. These tyres may only be fitted to vehicles furnished with a tyre pressuring monitoring system (TPMS).

Replacement Tyre Fitment

The retro fitting of conventional tyres to vehicles originally fitted with Run Flat tyres will eliminate the vehicle's Run Flat capability. They will also have no spare tyre. This could potentially leave the driver immobile when it comes to a deflation, and would compromise handling with their vehicle.

Mixing Run Flat tyres with standard tyres

The handling characteristics of Run Flat tyres are different compared to that of conventional tyres and as a consequence should not be intermixed over a vehicle.

Mixing different brands of Run Flat tyres

Just like standard tyres there will probably be different characteristics between different makes of Run Flat tyres. Hence, it is better to consult the tyre manufacturer regarding mixing different brands. It is strongly recommended that exactly the same make and pattern of tyre is fitted throughout the axle of the vehicle.

Service life of Run Flat tyres

v standard tyres

The tread rubber compound utilized in Run Flat tyres is normally identical or the same as that easy use in conventional tyres. Therefore, tyre wear rates among the two tyre types needs to be similar. It is advisable to note that the best tyre performance is achieved by maintaining correct inflation pressures for the loads and vehicle's use.

Utilization of Run flat tyres on towing vehicles

When Run Flat tyres are suited to towing vehicles different issues come up. Within their inflated condition Run Flat tyres can be utilized just like as a standard pneumatic tyre. Any experienced touring caravaner recognizes that the steadiness between their car and caravan is of primary importance to road safety. Whilst a deflated Run Flat tyre is designed to work with the demands of the solo vehicle, the additional mass of a caravan/trailer will subject the tyre to raised stress levels and effect on the tyre's inbuilt lateral stability.

The effect of that is certainly that even travelling from a restricted speed of 50mph may negatively affect the stability to the car/caravan combination and lower road safety. To avoid this potential hazard, it is strongly recommended that the length travelled and maximum speed on the deflated Run Flat tyre be reduced. Because the vehicle itself has an impact on the tyre's performance, please turn to the vehicle manufacturer's handbook for additional information.

Use of Run Flat tyres on caravans and trailers

Run Flat tyres must only be suited to vehicles that have a tyre pressure monitoring system (TPMS) like a visual/audible warning to drivers from a deflating tyre. Up to now no caravans or trailers are equipped with TPMS systems; hence they must not be fitted with Run Flat tyres.

Reparability

As of this days, still no industry that strongly recommended concerning to Run Flat Tyres.




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