Quote:
Originally Posted by solstice
Does anyone know what the ratio is in size between a 3 series and 4 series roof? It seems that the 3 series would be significantly larger due to more upright A and C (B in the case of the 4 series ) pillars but is it and by how much? I'm thinking that the CF roof on the F80 could save more weight where you least want it ( up top ) than what it did on the E92 and will do on the M4.
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Could save more weight is the right term ... but it
will not, because the F80M3 will have more isolation to reduce noises - Raindrops etc.!
I have heard/read about weight savings of 5kg : M3 and 6,5kg : M4 ... all against an non existing Steelroof without Moonroof.