Increased top speed limiter option (840) retrofit
I am wondering if it is possible to have a top speed limit increased from 130 to 150 mph on US-spec 35i (given I upgrade my tires and bring them up to BMW spec necessary for factory option 840)? I am just toying with the idea... (I have SAP, no M-Sport, no DHP), 18s for now, 19s or 20s next season.
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