Complex sentence: If the front axle has more grip than a similar vehicle with neutral steer characteristics (which would tend towards oversteer), the vehicle may be "tuned" to hopefully increase rear axle grip, or alternatively reduce front axle grip.
Split into simpler sentences: If the front axle has more grip than a similar vehicle with neutral steer characteristics, the vehicle will oversteer. The oversteering vehicle may be "tuned" by hopefully increasing rear axle grip, or alternatively by reducing front axle grip.