Slow down? Could you explain to me what this phenomenon is?In my case with the BX1880 and the original small R1 tires, the ride was not good. Not a direct shock to my spine but the ride was rough and on concrete the front tires felt like if they were square. I replaced the tires with "off road tread tires" in the BX2380 sizes to try to revive my grass that was pretty much destroyed by the R1's. The ride improved a lot and even though the rear tires are 6 ply rating, the ride is much, much better. Even with my cheaper BX1880 seat, the springs never bottom out and I feel no jolts in the up and down direction. However, like he said, the side to side motion and the swaying can be annoying but not painful, so I slow down for that.
I've ran R1 tires, and found they tore up the grass less than turfs. How could this be? I had hills, (which I don't now), turfs would spin, lug tires wouldn't. In fact, I'd have R1's now as they would be useful for tasks other than mowing, but they don't come in the size I'm running. As I've said many times, what works for some, will not work for all.