1931 model A performance

[bdtutton]

I have a stock 1930 Tudor that I often drive 10 miles each way to work. I travel about 47-53 mph during about 7 miles of the trip. The car seems happy up to about 54 mph, but the vibration starts increasing at about 55 mph. By 60 mph the engine sounds like it is really spinning hard and the wind noise sounds like a hurricane outside.
Some of the threads I read on the forums say that driving a stock 1930 Tudor at 50mph for any length of time will take out the center bearing. I am planning to take a 45 mile trip in the near future and I will need to run 45-53mph most of the way. Is this going to take out my center bearing the way several people say?? I run synthetic oil with a full filter and try to change the oil often.