Sauber are struggling financially at the moment, but the lack of grey paint at the rear of the car and the lower edge of the sidepods you may have noticed has actually been done intentionally. Layers of paint provides insulation - great for your walls at home, but not for covering an extemely hot powerunit in a race car.
So this weekend at the hot Singaporian circuit, the C33 just has that trademark carbon fibre pattern shown off in areas of the car, to reduce heat retention and improve cooling. Why don't all teams do this though, you may ask? Well obviously sponsorship on their livery is a very crucial source of income and the 'paint-less' areas are in places where there are no logos or sponsorship anyway.
Image: @ams_sport
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