We need to torque about speed ratings: power, speed and electric vehicle tyre fitments
Pirelli’s “power is nothing without control” strapline is well-known and apt. But, as we move further into the era of electric vehicles, should we be thinking: speed-ratings mean nothing without considering torque? In July 2003 my predecessor Peter Gardner published “Let’s torque speed ratings”, an editorial article that followed suggestions from within the tyre business that we reconsider what we mean by those letter values so-often tagged onto the end of tyre sizes. The discussion was specifically prompted by Stephen Marsh (then of Stapleton’s Tyre Services) who made the point that the power transference properites of millennial engines is as important as the absolute speed capability of tyres. In other words, when recommending products, the tyre business should be just as concerned about a vehicle’s torque demands as its top-speed capability.