Track tire pressure
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2013 CLS63
2013 ML350
2011 Audi S4 (sold)
2009 CLS550 (sold)
2006 BMW 530i (sold)
My understanding is that you need more tire PSI above 150 mph to prevent tire failure @ the side wall of the tire.
When I drive @ or above 180 mph. (Not on public roads) I have been running mine @ 50 psi.
The tires do spine a lot more when under heavy acceleration @ lower speeds.



