Oh yeah...regarding tires...My bike came with 1.50" tires. I was amazed at how fast and smooth they rode (I had been riding my MTB with knobbies). However, I was disappointed with the 1.50"'s durability, and switched to 2.00" on the back and 1.75" on the front.
They seemed a bit harder to pedal at first, but my muscles got used to them quickly.
They are much better for the less-than-pristine roads on my commute!
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Fewer Cars, more handlebars!