As it has already been said, BMW's are extremely sensative to tires because they are so fine tuned. Some tires are not made to the same tolerances that others are and this slight out-of-roundness or imperfection will make all of the difference in the world. This is why companies like Hunter, who make most of the tire mount and balance machines and are the industry leader, they have implicated a new step to balancing tires in the last few years. It's called a Road Force variation detection. Basically what the machine does is it puts a real-life simulated "road force" load on the tire to check for out of roundness and variations while balancing it. The variations can stem from pot holes in the road, improper or less than perfect manufacturing processes etc. Not rotating your tires at the recomended intervals will cause uneven tire wear that these bmw's will object to. BMW makes service recomendations for a reason. They design these cars so they know what maintenance should be done and for what reasons. Years before any of us ever see these cars, the BMW "scientists" have tested these cars and tires and engines etc. under the same real world conditions that we subject them to. This combined with the design process determines when and what you should do to your car in order to maintain OE performance. Part recomendations, whether it be tires or brake light bulbs, are made for a reason and that is so the bmw owner can maintain the intended feel and performance of his or her car, the same as it was the day it rolled off of the assembly line.
STETT Performance -
921 J Place, Suite 200
Plano, TX 75074
OEM Repairs and Maintenance
Extended Warranty Service
Everything Performance (brakes, turbos, Nitrous, Cams, Complete Engines, Clutches/Flywheels etc)
STETT Performance Official Grand Opening BMW Meet, May 6th 11A-3P -- Music, Food, Drawings and Tons of BMW's go to
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