{{Infobox automobile | image = Alfa Romeo RM Sport Castagna.jpg | caption = Alfa Romeo RM Sport with [[Carrozzeria Castagna|Castagna]] body | name = Alfa Romeo RM | manufacturer = [[Alfa Romeo]] | aka = | production = 1923–1925 | assembly = [[Portello (district of Milan)|Portello, Milan]], Italy | predecessor = [[Alfa Romeo RL]] | successor = [[Alfa Romeo 6C]] | class = | body_style = [[limousine]]<br>[[convertible]] | layout = [[FR layout]] | platform = | engine = 1.9 L [[Straight-four engine|I4]]<br>2.0 L [[Straight-4|I4]] | transmission = 4-speed manual<ref name="carfolio.com">{{Cite web|url=http://www.carfolio.com/specifications/models/car/?car=51238|title=Technical specifications of 1924 Alfa Romeo RM Sport|access-date=2008-01-04|work=carfolio.com| archive-url= https://web.archive.org/web/20080205063515/http://www.carfolio.com/specifications/models/car/?car=51238| archive-date= 5 February 2008 | url-status= live}}</ref> | wheelbase = {{convert|2900|mm|in|1|abbr=on}} (RM Sport) | length = {{convert|4250|mm|in|1|abbr=on}} | width = {{convert|1680|mm|in|1|abbr=on}} | height = {{convert|1650|mm|in|1|abbr=on}} | weight = {{convert|1450|kg|lb|0|abbr=on}} | related = | designer = }} The '''Alfa Romeo RM''' was produced between 1923 and 1925, based on the [[Alfa Romeo RL|RL]] model. It was introduced for the first time at the 1923 [[Paris Motor Show]] and total production was around 500 cars. The RM had a 2.0 L inline-four engine which produced between {{cvt|40|and|48|PS|kW|0}}. As were most of Alfa Romeo's cars, this was also used in motorsports. Three versions were made: Normal, Sport and Unificato. Sport had a raised compression ratio, and Unificato had longer wheelbase and a slightly bigger engine. The RM's top speed was around {{convert|90|km/h|mph|0|abbr=on}}.
{|class="wikitable" style="text-align:center; font-size:91%;" |+ Models {{sfnp|Borgeson|1990|p=}} ! Model || Engine displacement || Max power || Years produced |- |RM Normal|| 1944 cc || {{cvt|40|PS|kW|0}} ||(1923) |- |RM Sport|| 1944 cc || {{cvt|44|PS|kW|0}} ||(1924) |- |RM Unificato|| 1996 cc || {{cvt|48|PS|kW|0}} ||(1925) |- |}
== Alfa Romeo half-track == A very rare [[half-track]] version based on the RM was built in the 1920s. The half-track used the RM's inline-four engine modified to work with dry sump lubrication. The track used was licensed to Citroën [[Kégresse track|Kegresse]]; only one example is known to survive.<ref name="kidston.com">{{Cite web|url=http://www.kidston.com/kidston-cars/7/1924-Alfa-Romeo-RM|title=1924 Alfa Romeo RM Four Wheel Drive half-track Torpedo|access-date=2011-12-17|work=kidston.com|archive-url=https://web.archive.org/web/20131212081430/http://www.kidston.com/kidston-cars/7/1924-Alfa-Romeo-RM|archive-date=2013-12-12|url-status=dead}}</ref><ref name="motorbase.com">{{Cite web|url=http://www.motorbase.com/auctionlot/by-id/2083234569/|title=1924 Alfa Romeo RM Four Wheel Drive Winter Sports half-track|access-date=2007-12-22|work=motorbase.com}}</ref>
== Notes == {{reflist}}
==References== {{cite book | last = Borgeson | first = Griffith | title = The Alfa Romeo Tradition | publisher = Haynes (Foulis) Publishing Group Ltd. Somerset, UK | year = 1990 | isbn = 0-85429-875-4 }}
{{Alfa Romeo}} {{Alfa Romeo Pre War Timeline}}
{{DEFAULTSORT:Alfa Romeo Rm}} [[Category:Alfa Romeo vehicles|RM]] [[Category:Cars introduced in 1923]]
[[de:Alfa Romeo RL/RM]]