I'm sure that narrower is likely better, although its still hit or miss on the round part. Interco has notoriosly old and inaccurate tire molding machines, according to the tire guy that mounted mine. If getting a set, have them mounted at the place you bought them at and watch them get mounted and balanced. If any out of roundness is seen or more than a few ounces (like 6-8 oz.) of weight is needed to balance them, reject the tire and have them mount up another one.