Quote:
Originally Posted by Frenchstar-57
Hi,
My experience on my 2017 BMW G30 520d Limousine (car vibration between 125kmh-140kmh):
- 225/55/17 michelin privacy 3 rft -> no vibrations, after a flat tyre, i changed my tires with cinturato P7 no rft -> vibrations
- i have my winter set on original wheel with michelin alpin RFT 225/55/17 -> vibration
- now, i changed my summer set with original 18 inch rft 245/45/18 -> vibrations
with 3 differents set of wheels and tires, the vibrations are still presents
The vibration can disappear when the car is cold, the first kilometers
The vibration can increase in highway curve
With different tyre pressure, it doesn't affect the vibrations
i don't no why this car enter in resonance at specific speed (138km/H)
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regarding the vibrations on highway curves, its probably the RFT sidewalls. As the sidewalls are stiff, the tires do not roll like traditional non rft tires, and fight each other.