Hi Sifu's,I've just acquired a year 1996 E34 525i. I've done all the lube change and am running everything standard except for the rims which is 17" BBS RK 003. However, I have noticed that my full tank of 80 liters gives me a mileage of 480km only. Is this normal or abnormal? Help me out guys with what should be the correct mileage. Thanks.