Sourced production or model lifecycle range used by the main catalog timeline.
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Riley / Model record
RileyRM
Production1945–1955
Recorded originUnited Kingdom
ClassAutomobile
Also known asRiley 1½ Litre · Riley 2½ Litre
Background
The Riley RM is a series of executive cars and compact executive cars that were made by Riley Motors from 1945 until 1955. They were the last models developed independently by Riley before its parent company, Nuffield, merged with Austin to form BMC. The RM series was produced in Coventry until 1949, when production moved to the MG works at Abingdon. Until 1952, models were marketed as the Riley 1½ Litre and the Riley 2½ Litre. The term RM has been used retrospectively to encompass models produced before 1952.
Text adapted from “Riley RM” on Wikipedia ↗ · CC BY-SA 4.0 ↗ · retrieved 2026-07
Chronology ledger
Dates with their meaning intact
Production chronology1945–1955
Wikipedia lead ↗11 years