The key to Spa is managing the colossal amount of energy going through the tyres, from every direction. At Eau Rouge, for example, the engines are at maximum power, the cars are travelling at 300kph, and there is a negative compression in the region of 1g, as well as about 5g of lateral force. This adds up to an unparalleled demand on the tyre structure and shoulder, not seen anywhere else during the year.The medium tyre is a low working range compound, capable of achieving optimal performance even at a wide range of low temperatures - which is often the case at Spa. The soft tyre by contrast is a high working range compound, suitable for higher temperatures. Rain is common at Spa, but...
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