Editing Disc brake (section)

===Mass production===
The [[Citroën DS]] was the first sustained [[mass production]] use of modern automotive disc brakes, in 1955.<ref name="hemmings1"/><ref name="Industrial"/><ref name="MotorTrend2006">{{cite magazine |magazine=Motor Trend |url= https://www.motortrend.com/vehicle-genres/c12-0511-1960-citroen-ds/ |last=Bramley |first=Mark |title=Drive: 1960 Citroen DS Future Shock: Nothing as otherworldly radical had ever touched down on Planet Earth|date=11 August 2006|access-date=20 August 2020}}</ref><ref>{{cite web|title=Automotive Heroes – the Citroën DS |last=Skelton |first=Sam |publisher=Classic & Sports Car |url= https://www.classicandsportscar.com/sponsored/promoted-automotive-heroes-citroen-ds |date= 21 August 2019 |access-date=20 August 2020}}</ref><ref name="SMMT">{{cite web|title= Car safety – a brief history |date=3 February 2015 |publisher=The Society of Motor Manufacturers and Traders 71 Great Peter Street London SW1P 2BN |url= https://www.smmt.co.uk/2015/02/car-safety-brief-history/ |access-date=20 August 2020}}</ref> The car featured caliper-type front disc brakes among its many innovations.<ref name="hemmings1"/> These discs were mounted inboard near the transmission and were powered by the vehicle's central hydraulic system. This model went on to sell 1.5 million units over 20 years with the same brake setup.<ref name="hemmings1"/>

Despite early experiments in 1902, from British [[Lanchester Motor Company]], and in 1949 from Americans [[Chrysler]] and [[Crosley]], the costly, trouble-prone technology was not ready for mass production.<ref name="hemmings1"/><ref name="ChryslerDisc"/> Attempts were soon withdrawn.<ref name="hemmings1"/><ref name="ChryslerDisc"/><ref name="Langworth 1996"/>

The [[Jensen 541]], with four-wheel disc brakes, followed in 1956.<ref name="hemmings1"/><ref>{{cite book |publisher=The Motor |title=October 17 |year=1956 }}</ref> Triumph exhibited a 1956 [[Triumph TR3|TR3]] with disc brakes to the public, but the first production cars with Girling front-disc brakes were made in September 1956.<ref>{{cite magazine |last=Lentinello |first=Richard |title=The first car with disc brakes really was . . . |magazine=Hemmings Sports & Exotic Car |date=April 2011 |url= https://www.hemmings.com/magazine/hsx/2011/04/The-first-car-with-disc-brakes-really-was------/3698201.html |access-date=5 May 2018}}</ref> Jaguar began to offer disc brakes in February 1957 on the XK150 model,<ref>Original Jaguar XK by Philip Porter ISBN 1 901432 02 5</ref> soon to follow with the Mark 1 sports saloon<ref>Jaguar MkI & MkII The Complete Companion by Nigel Thorley ISBN 1 870979 08 7</ref> and in 1959 with the Mark IX large saloon.<ref>Jaguar Saloon Cars by Paul Skilleter ISBN 0 85429 596 8</ref>

Disc brakes were most popular on [[sports car]]s when they were first introduced since these vehicles are more demanding about brake performance. Discs have now become the more common form in most passenger vehicles. However, many (lightweight vehicles) use [[drum brake]]s on the rear wheels to keep costs and weight down as well as to simplify the provisions for a [[parking brake]]. This can be a reasonable compromise because the front brakes perform most of the braking effort.

Many early implementations for automobiles located the brakes on the [[inboard brake|inboard]] side of the [[driveshaft]], near the [[differential (mechanics)|differential]], while most brakes today are located inside the wheels. An inboard location reduces the [[unsprung weight]] and eliminates a source of heat transfer to the tires.

Historically, brake discs were manufactured worldwide with a concentration in Europe and America. Between 1989 and 2005, the manufacturing of brake discs migrated predominantly to China.{{Cn|date=August 2024}}