not really about the "feeling" of it so much as its just the wear of the wheel. my spitfires are 3x smaller than what they are now and i had 51 mm. they look like 45 now. they arent wobbly or anything but its just annoying to have that happen after liketwo months of just skating. my bones have been the same since i got them in feburary and ive been skating at least once a week at the very least. of course now with my plantar faciitis i cant do much but i skate when i can. just from my experience, bones seem to retain shape longer.