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RM Riley specifications

Riley RM 2.5 litre roadster



This version of the RMB was designed specifically for the US market, with cutaway doors, 3-abreast seating and foldaway hood. It also featured a lower bonnet line, with fold flat windscreen, and a column gearshift.

It wasn't the success that Nuffield had hoped for, selling only 507 in 3 years although in my opinion it was a real thoroughbred car in every respect. It was dropped in 1951, before the RMB was face lifted to the RMF.

ENGINE TYPE High camshafts and push-rod 90-deg ohv
2443cc 16hp 4cyl
Bore 80.5mm Stroke 120mm
90bhp at 4,300rpm
(100bhp at 4,500rpm from Oct. 1948 onward)
Compression ratio 6.8:1
Carburation 2 H4 SU
TRANSMISSION Four-speed gearbox, Synchro on 2nd,3rd,4th.
Overall gear ratios:
15.0, 2nd 8.86,
3rd 5.83, 4th 4.11
Reverse 15.0
Dimensions Wheelbase 9'11" (aprx 4010mm)
Track 4'4.5" (aprx 1320mm)
Length 15'6" (aprx 4710mm)
Width 5'6" (aprx 1640mm)
Height 4'11.5" (aprx 1480mm)
Turning Circle 36'
Weight 26.5cwt