16" wheels on my '28?

[saltman]

I have 16", 1935 spoked wheels on my '28 Coupe. They came with the car when I bought it. And although my initial intention was to replace them, after some time, I began to like them... and still do. BUT, now that I have got the car running so well and want to drive it more and more, I fear that the engine (bearings) is really going to take a beating. About 40mph is a comfortable 'max' speed although it will run 45or so. But, at 45mph, I feel that the engine is really working too hard and I am not having near as much fun because of this. I have checked the math and IF I were to use the original 21" wheels, I would then be able to cruise at almost 50mph (about 24% faster) rather than the 40mph. And, with 19" wheels, I could cruise at about 46mph (16% faster). Is my math correct and is my assumption correct that if I stay with the 16" wheels, I will overwork the engine just trying to keep up with other traffic or staying out of their way? Would really like to have some comments regarding this since its going to cost a great deal of money to make the conversion and don't want to ruin my engine. Also, would the larger diameter, thinner wheels make it less or more difficult to turn? Thank You so much in advance... SALTMAN