An undesirable side-effect of a regular ("open") differential is that it cansends sendequal most of the powertorque to theboth wheel with the lesser traction (grip)wheels.<ref>{{cite book |last=Bonnick |first=Allan |date=2001 |url=https://books.google.com/books?id=odUZ0O_OWZwC&pg=PA22 |title=Automotive Computer Controlled Systems |isbn=9780750650892 |page=22 |publisher=Elsevier Science & Technology Books }}</ref><ref>{{cite book |last=Bonnick |first=Allan |date=2008 |url=https://books.google.com/books?id=78HoZb-ohbIC&pg=PA123 |title=Automotive Science and Mathematics |isbn=9780750685221 |page=123 |publisher=Butterworth-Heinemann }}</ref> InThis means that in a situation when one wheel has reduced grip (e.g. due to cornering forces or a low-grip surface under one wheel), an open differential can cause [[wheelspin]] in the tyretire with less grip, while the tyretire with more grip receivescannot veryreceive littleadditional powertorque necessary to propel the vehicle forward.<ref>{{cite webbook |last=ChocholekBonnick |first=S. E.Allan |date=19882008 |url=httphttps://zhomebooks.google.com/ZCMnL/tech/Torsen/Torsen.htmbooks?id=78HoZb-ohbIC&pg=PA123 |title=TheAutomotive DevelopmentScience ofand aMathematics Differential|isbn=9780750685221 for|page=123 the Improvement of Traction Control|publisher=Butterworth-Heinemann }}</ref>
In order to avoid this situation, various designs of ''limited-slip differentials'' are used to limit the difference in power sent to each of the wheels.
