The BMW suspension allows superb handling characteristics providing that the tyres contact patch can be maintained. However, "What about the actual inconsistent and premature tyre wear?" Wheels In-Motion, surprise surprise, has found the solution! stay away from pot holes.Īs with a lot of things today we have to make compromises and the safety benefits of Run Flat Tyres are not in question, though we will continue our studies into this shock migration very thoroughly. We are currently monitoring this but it is something that owners of Run Flat Tyres must keep a keen eye on and in the avoidance of doubt. Unfortunately this doesn't appear to be perfect as we are starting to notice that this shock migration appears to transmit some of these forces to the wheel rim, and actually cracking it in some cases without amazingly, any apparent harm to the tyre itself. By compromise, all BMW's fitted with RFT's have downgraded (softer) suspension to absorb the migration of these road shocks. Most people would know that the tyre full of air has a reasonable level of compliance acting as our first line of defence deflecting the poor road condition however things appear to be quite different with the Run Flat. I, for one salute Bridgestone for finally bringing this necessary safety feature for the first time in a useable context, but unfortunately there are problems. Nevertheless this tyre, undressed is far from similar to a conventional tyre.īridgestone's design required the tyres sidewall to be reinforced, "armoured" is a closer description so that the tyre is able to support the car when fully deflated. In the late 90's Bridgestone launched their version of the RFT (Run-Flat-Tyre) which in essence is not too distant from an ordinary tyre in appearance.
Its obvious safety features encouraged exhausting development advances but despite this the original embryo the Run-Flat tyre looked like it was deemed to failure. The run-flat tyre has been the desire of many tyre manufacturers over the last 30yrs. Steering Geometry Theory and Axis Deviation Theory.BMW Run Flat Problems | Car Tyres Fitting and Wheel Alignment Specialists
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