tires for my 540i

Posted in the BMW 540i Forum

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shawn kennedy

Crystal River, FL

the current profile tires on the front of my 540i is 235/45/17 i want to replace them with a 235/40/17 series. i like the 40 series in the back and would like the 40's in the front as well; will this create a problem with the driving dynamics?

doug widdicks

Whitby, Canada

move up to a 245/40/17 or 255/40/17 to keep overall diameter similar if not the same.Any tire shop can look up tire diameters in their books for you.Changing tire diameters leads to trouble and not just with wrong speedo readings.Watch out for potholes and driveway curbs with the lower profile tires as you can bend your rims easier(less rubber to protect them).Keep air pressures up for sure.

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