View Single Post
      11-08-2012, 11:10 AM   #6
cypis007
Private
Slovakia
0
Rep
68
Posts

 
Drives: E91 318d Touring
Join Date: Nov 2011
Location: Slovakia

iTrader: (0)

Pressure also matters. Old tires could had drop, in time (few months), from 2.5 to 2.0 bar, progressively. New tires are pumped up to 2.5 and that gives your significant gain in mpg.