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      01-13-2009, 01:48 AM   #3
mixja
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Drives: 2011 E90 DCT Silverstone
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Dinan states:

Quote:
The 3.62 ratio is also recommended for cars equipped with 20" wheels and 30 series tires as the gearing will compensate for the slightly taller tire/wheel combination.
I wouldn't read this as Dinan recommends you use 20"/30 tires with the diff - they're just saying it helps if you have that wheel/tire combo as the circumference of the 20/30 combo is larger than stock wheel/tire combinations...

If they did recommend the 20/30 combo then they'd be severely limiting their market reach...