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Old 03-11-2015, 09:14 PM   #10 (permalink)
oldtamiyaphile
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I don't know about 'generally', but fresh concrete will be polished smooth until the aggregate starts to break through. We don't have any concrete roads so I don't know how long that takes.

For asphalt, that tends to melt/ soften in the summer sun, the grooves take on a distinctive shiny/ polished look, they're definitely smoother, but there comes a point where they start to 'buckle', pot holes appear and are filled in etc. If you're suspension has to do more work, that's lost energy too.

A lot of it will come down to the age and maintenance of the road in question.
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