Antilock braking function helps a driver to maintain steering control in any braking condition. This is because the wheel is not totally locked. A vehicle with a locked wheel will be difficult to steer especially if there is skidding happening.
3. Accelerated tire wear
Without ABS, even normal braking will cause accelerated tire wear.
4. Tire deformation
If a tire that is locked hits a curb, bump or pothole, it deforms easily than that of a wheel that is not locked. Again, the area of tire that has contact with road surface can damage during sudden braking.
5. Increased braking distance
On some type of road surfaces like wet or slippery roads, the braking distance of a vehicle without ABS is more.
6. Wrong brake force distribution
Cars have varying brake force distributions between the front and rear wheels, depending on manufacturer's design. In some cars for example, it is 70% brake force to the front wheels and 30% brake force to the rear wheels. Sometimes when people delete ABS, the ABS pump is bypassed by connecting brake lines with a connector which links the pipes and this does not account for correct brake force distribution.