I've read that study before, and I have a problem with the following part:
Quote:
Reducing a tire’s aspect ratio—
that is, its section height relative to its section width—should reduce
hysteresis if it is accomplished by shortening and stiffening of the sidewalls.
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It's a good thing they say "should" because the Lambilotte study does not agree with this, at least for the tire model tested. From the limited data in that slideshow, we can still see the following:
- The lowest RRC regardless of width for Diameter/Aspect ratio are: 13/80, 14/75, 15/70. Above or below those values the RRC usually increases.
- The lowest RRC size for a given tire diameter is usually the width, regardless of aspect ratio, closest to the tire diameter times 14.