I have seen and got a photo of a white R33 with black 32 rims at my TAFE (freo) it has in big Black stickes 1+1=7 along the both drivers and passangers side of the car, can some one please explain to me what he/she means by this stickers

Thanks Rhyso

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1997 Nissan Navara, running 3.2L de+t set up
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