View Single Post
      07-15-2011, 11:58 AM   #50
persian54
Lieutenant General
persian54's Avatar
United_States
285
Rep
15,812
Posts

 
Drives: SL550. Prev: E93 M3/335i/Z435i
Join Date: Jun 2009
Location: The Valley, SoCal

iTrader: (291)

Quote:
Originally Posted by Roby84m View Post
Speedo is not %100 accurate guys. It shows 2mph + than the actual speed If i am not mistaken.
More than that... it's 5-7% IIRC

So at 170mph, it's more than 2mph off

if you have 19s or 20s it's worse IIRC