i dun think grounding gonna voide the warranty. i've got grounding, VS and other wirings tangled to my battery terminal and yet, still able to claim for the knock sensor which decided to "kong" last year. NO problem at all and no question asked about all those enhancement.
Im here seeking ur help n guidance on which kind rim&tyre to go with my car.
Thr r to kindz of "ROTA" rims tat has caught my interest, thy r....