Quote:
Originally Posted by BD_F22
How so pal? It's not an issue with the tires because they are still rated for over 155mph its BMW being stupid and putting a slower speed limiter when it wasn't a necessity.
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On Tirerack, Pirelli Cinturato P7 All Season Run Flats in size 225/40-18 are listed as having a V speed rating, 149 mph. That is (slightly) less than the 155 mph you get with the increased top speed limiter, option 840, so I understand why BMW does not offer a 155 mph top speed with these tires.
Michelin Pilot Super Sports in staggered size have a Y speed rating, 186 mph, a comfortable margin over a 155 mph limit.
Bruce
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2017 340i M-Sport, xDrive, Estoril, Adaptive M Suspension, 18" Staggered, Increased Top Speed Limiter, AT, Black Kidney Grilles, ZCW, ZDA
2011 X3 35i Sold