Originally Posted by
TimothyH
I own PD-M8000 pedals, same as the OP.
They have adjustable release tension. At the upper end of the adjustment they are dangerously difficult to get out of. I have them set to about half way and should really loosen them a bit.
Most people don't realize that there are two different SPD cleats. SH56 are multi-directional release and they are much easier to pull out of. SH51 are single release cleats designed for racing and aggressive riding. I think you may have experience with the former. Many mistakenly buy SH56 cleats and complain that they don't hold well enough.
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The PD-R9100 pedals are 234 grams
The PD-6800 pedals are 260 grams
The PD-5800 pedals are 285 grams
Contrast the PD-M8000 SPD pedals at 343 grams. There is significant weight to be saved.
-Tim-
I just use the SM-SH51. I did ease up a bit on the tension . It helped clipping out. although even at default tension it wasn't so bad.
The Shimano 105s seem to be the ticket. Still have some time though still a couple months of winter here.