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Jackolafedon · 05-21-2011, 07:35 PM

To put your mind at ease about the speedo being off the difference between the readings of the 235/45R17 and the 255/40R18 is less then 3 MPH at 100 MPH. This is less then the underclock subaru uses on there vehicle speed sensor. All this means that if your speedo says your doing 65 and the limit is 65 you'll still clock under 65.

05-21-2011, 07:35 PM	#371
Jackolafedon Tri-State Aficionado Join Date: Feb 2010 Location: Bethlehem, PA Member #15791 My Ride: MY 07 2.5i Impreza iTrader: (0)	Nit picking bothers me To put your mind at ease about the speedo being off the difference between the readings of the 235/45R17 and the 255/40R18 is less then 3 MPH at 100 MPH. This is less then the underclock subaru uses on there vehicle speed sensor. All this means that if your speedo says your doing 65 and the limit is 65 you'll still clock under 65.