I have the marathon supremes and the big apple tires on other bikes. 1.6, 2.0 supremes and 2.1 big apple. I got the supremes for easier rolling and higher pressure. I weigh 190. Turns out that the big apples roll better. Significantly better. I changed out the bearings on one of my bikes because I thought It should be rolling easier than the the bike with the big apples. So this is totally scientific LOL. Love the 27.5 and can't wait to roll on the big ones.
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