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Japanese Domestic Market (JDM) is a term for Japan's economic market for Japanese-brand goods, such as automobiles and parts. The term's most common application is to Japanese-brand automobiles built specifically for the Japanese market (designed and constructed to conform to Japanese vehicle and equipment regulations and to suit Japanese market preferences), and are known chiefly as "JDM'S" in the tuner community. JDM vehicles migrate to other markets through ordinary commerce and the grey market.

JDM cars have been historically limited by a gentleman's agreement among manufacturers to 280 PS and a top speed of 180 km/h (~112 mph, via a speed limiter device), mostly due to safety concerns. The 280 HP limit was lifted in 2004. ^[1] However, the speed limit of 180 km/h is still in effect to this day. Many JDM sports cars have speedometers that only go up to 180 km/h, even though the car would be capable of much higher speeds if it wasn't limited. Some new cars like the Nissan GT-R detect via GPS satellite navigation whether the car is on a Japanese race track, and if so, disengage the speed limiter. ^[2]

JDM vehicles often differ in features and equipment from vehicles sold elsewhere. For example, Honda has produced many different versions of the B18C, B16A and K20A engines for various markets worldwide. This is done due to varying emission regulations in different countries.

Vehicles built to JDM specifications may have stiffer suspensions amd improved throttle response over vehicles built for different markets, due to differing driving styles and different road types. For example, the USA features long highways where a smoother ride would be preferable, while Japan's roads are short and twisty, where a stiffer suspension is desired for improved handling capability. For the US/European market versions, some features may be removed in order to stay below a certain pricing goal for the car, such as using a conventional rear suspension instead of a double wishbone suspension and lack of electronic devices like Active Yaw Control. Furthermore, engine power of JDM sports cars is sometimes reduced for the US market to meet stricter emission standards.

There are safety hazards associated with using JDM headlamps in countries where traffic flows along the right side of the road, because JDM headlamps, engineered for use on the left side of the road, fail to light the right-side driver's way safely ahead while blinding oncoming motorists^[3].

In automotive culture, JDM refers to a style of modifying automobiles, mainly cars of Japanese origin.^{[citation needed]} The cosmetic style of components is often preferred^[who?] over pure function.^{[citation needed]} "True" JDM components are also preferred^[who?] over Japanese aftermarket parts.^{[citation needed]} A\ example of one such market is the import of used Japanese engines to North America to be put into Honda, Nissan, Toyota, Mazda, Subaru and Mitsubishi sports and street cars for higher performance outputs.^{[citation needed]}

References

^ http://search.japantimes.co.jp/cgi-bin/fv20080413pl.html Why Japan finally got its foot off the brake
^ http://www.gtchannel.com/content.php?cid=13122 2009 Nissan GT-R Speed Limiter
^ Headlamp traffic-handedness

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 {{Images needed|date=April 2008}}
-'''Japanese Domestic Market''' ('''JDM''') is a term for [[Japan]]'s economic market for Japanese-brand goods, such as [[automobile]]s and parts. The term's most common application is to Japanese-brand automobiles built specifically for the Japanese market, i.e., designed and constructed to conform to Japanese vehicle and equipment regulations and to suit Japanese market preferences. JDM vehicles migrate to other markets through [[Japanese used vehicle exporting|ordinary commerce]] and the [[grey import vehicles|grey market]].
+'''Japanese Domestic Market''' ('''JDM''') is a term for [[Japan]]'s economic market for Japanese-brand goods, such as [[automobile]]s and parts. The term's most common application is to Japanese-brand automobiles built specifically for the Japanese market (designed and constructed to conform to Japanese vehicle and equipment regulations and to suit Japanese market preferences), and are known chiefly as "JDM'S" in the tuner community. JDM vehicles migrate to other markets through [[Japanese used vehicle exporting|ordinary commerce]] and the [[grey import vehicles|grey market]].
-JDM cars or short "JDMs" were generally limited to 280 [[Horsepower#PS|PS]] and a top speed of 180 [[Kmh|km/h]] (~112 mph, via a speed limiter device), mostly due to safety concerns. The 280 PS limit was lifted in 2004. <ref>http://search.japantimes.co.jp/cgi-bin/fv20080413pl.html Why Japan finally got its foot off the brake</ref> However, the speed limit of 180 km/h is still in effect to this day. In fact, many JDM sports cars have speedometers that only go up to 180 km/h, even though the car would be capable of much higher speeds if it wasn't limited. Some new cars like the [[Nissan GT-R]] detect via GPS satellite navigation wether the car is on a japanese race track, and if so, disengage the speed limiter. <ref>http://www.gtchannel.com/content.php?cid=13122 2009 Nissan GT-R Speed Limiter</ref>
+JDM cars have been historically limited by a [[gentleman's agreement]] among manufacturers to 280 [[Horsepower#PS|PS]] and a top speed of 180 [[Kmh|km/h]] (~112 mph, via a speed limiter device), mostly due to safety concerns. The 280 HP limit was lifted in 2004. <ref>http://search.japantimes.co.jp/cgi-bin/fv20080413pl.html Why Japan finally got its foot off the brake</ref> However, the speed limit of 180 km/h is still in effect to this day. Many JDM sports cars have speedometers that only go up to 180 km/h, even though the car would be capable of much higher speeds if it wasn't limited. Some new cars like the [[Nissan GT-R]] detect via GPS satellite navigation whether the car is on a Japanese race track, and if so, disengage the speed limiter. <ref>http://www.gtchannel.com/content.php?cid=13122 2009 Nissan GT-R Speed Limiter</ref>
-JDM vehicles often differ in features and equipment from vehicles sold elsewhere. For example, [[Honda]] has produced many different versions of the B18C, B16A and K20A engines for various markets worldwide. Often times, JDMs for instance have stiffer suspension amd improved throttle response, because japanese buyers are thought to visit race tracks more often, maybe due to the limitations and tight street regulations such as mentioned above. For the US/european market versions, some features may be removed in order to stay below a certain pricing goal for the car, such as using a conventional rear suspension instead of a [[double wishbone suspension]] and lack of electronic devices like [[Active Yaw Control]]. Furthermore, engine power of JDM sports cars is sometimes reduced for the US market to meet stricter emission standards.
+JDM vehicles often differ in features and equipment from vehicles sold elsewhere. For example, [[Honda]] has produced many different versions of the B18C, B16A and K20A engines for various markets worldwide. This is done due to varying emission regulations in different countries.
+Vehicles built to JDM specifications may have stiffer suspensions amd improved throttle response over vehicles built for different markets, due to differing driving styles and different road types. For example, the USA features long highways where a smoother ride would be preferable, while Japan's roads are short and twisty, where a stiffer suspension is desired for improved handling capability. For the US/European market versions, some features may be removed in order to stay below a certain pricing goal for the car, such as using a conventional rear suspension instead of a [[double wishbone suspension]] and lack of electronic devices like [[Active Yaw Control]]. Furthermore, engine power of JDM sports cars is sometimes reduced for the US market to meet stricter emission standards.
-There are [[Headlamps#Traffic handedness|safety hazards]] associated with using JDM headlamps in countries where traffic flows along the [[Driving on the left or right|right side of the road]], because JDM headlamps, engineered for use on the left side of the road, fail to light the right-side driver's way safely ahead while blinding oncoming motorists<ref>[http://www.danielsternlighting.com/tech/lights/codes/codes.html#Dip Headlamp traffic-handedness]</ref>. Nevertheless, primarily due to marketing efforts, JDM headlamps are quite popular.
+There are [[Headlamps#Traffic handedness|safety hazards]] associated with using JDM headlamps in countries where traffic flows along the [[Driving on the left or right|right side of the road]], because JDM headlamps, engineered for use on the left side of the road, fail to light the right-side driver's way safely ahead while blinding oncoming motorists<ref>[http://www.danielsternlighting.com/tech/lights/codes/codes.html#Dip Headlamp traffic-handedness]</ref>.
-In automotive culture, JDM refers to a style of modifying automobiles, mainly cars of Japanese origin.{{Fact|date=April 2008}} The function of components is often preferred{{Who|date=April 2008}} over cosmetic appeal.{{Fact|date=April 2008}} "True" Japanese Domestic Market components are also preferred{{Who|date=April 2008}} over Japanese aftermarket parts.{{Fact|date=April 2008}} An example of one such market is the import of used Japanese engines to North America to be put into Honda, Nissan, Toyota, Mazda, Subaru and Mitsubishi sports and street cars for higher performance outputs.{{Fact|date=April 2008}}
+In automotive culture, JDM refers to a style of modifying automobiles, mainly cars of Japanese origin.{{Fact|date=April 2008}} The cosmetic style of components is often preferred{{Who|date=April 2008}} over pure function.{{Fact|date=April 2008}} "True" JDM components are also preferred{{Who|date=April 2008}} over Japanese aftermarket parts.{{Fact|date=April 2008}} A\ example of one such market is the import of used Japanese engines to North America to be put into Honda, Nissan, Toyota, Mazda, Subaru and Mitsubishi sports and street cars for higher performance outputs.{{Fact|date=April 2008}}
 ==References==

Revision as of 14:59, 31 August 2008

References

See also