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As I understand it, the speed rating and load index are as important as each other. As long as the tyre specification exceeds what is required, you should have no problem - the ideal is to meet the car's spec exactly, but having a speed & or load rating higher that required is ok.
My other car has different load rating numbers for the front and back, because the engine (where the bulk of the weight of the car) is nearer the rear axle than the front (it is mid-engined). The rear wheels are also a different size to the fronts, both in diameter and width. Obviously the speed rating is same front and rear tyres. |
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