I had been riding on Kenda Small-Block 8's for about a year, maybe more. They served me really well last winter with their traction, and I used them last in a gravel-grinder spring race where they also performed well.
For the nicer climate and the sake of a mostly paved commute (albeit on some pretty bad roads), I switched back to my beaded Kenda KWest. They are wider (35 compared to 32 for the 8's) and have a road friendly tread. Alas, they were awful.
I didn't know what was going on with them until they "naturally" got softer as they lost some of their volume.
I have almost always inflated my tires via the squeeze test. Always liked my tires hard for less rolling resistance. But I have learned a lesson here - my bone jarring ride (aluminum frame and awful roads) has really smoothed out quite noticeably with less tire pressure.
I had always 'heard' this to be true but now I know it is.
Here's to getting the correct tire pressure!