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- Hybrid_Tifoso
1100kgs may have been the weight including the driver which was how the regulations may have worked. GT5 does not include driver weights in it's figures. This may apply to a lot of racing car spec differences and also road car spec when various bodies include driver weights to their official figures.
How do you know that 1100 KG is the car's gross weight, but not the curb weight?
And let's assume GT5's weight is the correct curb weight, wouldn't a driver who weighs at ~90 KG considered as overweight?