[raygun]

How much weight do you think they're picking up on all 4 times by doing that? A kilo? That's how tight those cars are; they want to make sure they're legal weight after the race.

[Elle Bee]

I would guess you can pick up a couple of pounds of clag or marbles ... 4 big beefy sticky wide tires. .... would a pound or two per tire be out of the question? ... not as it looks here

F1 cars are made of carbon fiber and other ultra-lightweight materials so every bit of weight is significant.

I think ??? the minimum start weight is 620 kg (1,367 lb) including the driver & fluids - I seem to remember Shell was working on light weight fuels for Ferrari

At the end of a race when the fuel is low, the tires are worn, the brake pads and discs have worn down and the driver has lost weight through loss of fluids, the overall package must still weigh at least 600kgs ???

They engineer their weights to such a degree that once a race is over every little bit of weight counts.

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