CARCARETOOL VEHICLE GUIDE

Riley 1 1/2 Litre

Riley 1 1/2 Litre — 4-door saloon; 2-door open 2 or 3-seater; 2-door 4-seater cabriolet. Explore engine specifications, fuel economy, dimensions, tire sizes, seating, maintenance and tire-pressure guidance.

About the Riley 1 1/2 Litre

Riley 1 1/2 Litre is a 4-door saloon; 2-door open 2 or 3-seater; 2-door 4-seater cabriolet in the executive car (e); compact executive car (d) class. The guide brings together the vehicle information currently available for this model and a FR layout layout. Public source material describes the model in the context of its design, market positioning and vehicle history.

This guide is designed to answer practical questions about the Riley 1 1/2 Litre, including its specifications, engine, fuel economy, tires, maintenance and ownership details.

Riley 1 1/2 Litre specifications at a glance

Use this table for the model-level essentials. Exact figures may vary by year, trim, engine and market.

Make	Riley
Model	1 1/2 Litre
Model years	Not specified
Body style	4-door saloon; 2-door open 2 or 3-seater; 2-door 4-seater cabriolet
Vehicle class	Executive car (E); compact executive car (D)
Manufacturer	Riley Motors
Production	1945–1955
Market / country	NL, NZ

Engine, transmission and performance

The available source data does not identify a single engine configuration for every Riley 1 1/2 Litre variant.. The listed drivetrain/layout is FR layout.

Drivetrain / layout	FR layout

Dimensions, weight and practicality

Dimensions and capacity figures are presented as published source data when available.

Wheelbase	1.5 L cars – 112 in (2,845 mm)2.5 L cars – 119 in (3,023 mm)
Length	1.5 L cars – 179 in (4,547 mm)2.5 L cars – 186 in (4,724 mm)
Width	63 in (1,600 mm)
Height	59 in (1,499 mm)

Riley 1 1/2 Litre other specifications

Name	Riley RM Series
Image	Riley RMA BW 1.jpg
Caption	1951 Riley RMA

Riley 1 1/2 Litre generations and model years

Where a source covers multiple generations, CarCareTool selects the generation(s) that best match this catalog model instead of mixing unrelated variants.

Generation / scope	Years	Engine	Transmission	Drivetrain
Riley RM Series	1945–1955	Not specified	Not specified	FR layout

Riley 1 1/2 Litre features and equipment

Features shown below are tied to the available source material for this model. Equipment can vary by year, trim and market.

Standard or documented features

✓valvetrain = 90-degree angled overhead valves operated by twin high-lift camshafts moving rockers with short light stiff push-rods powered from the crankshaft by duplex roller chains

✓coolingsystem = water, thermostatically controlled flow, belt-driven water pump and radiator fan

TIRE PRESSURE

Recommended tire pressure for Riley 1 1/2 Litre

Check the vehicle placard or owner’s manual for the manufacturer’s cold inflation pressure. CarCareTool estimates are clearly labelled when an exact verified value is unavailable.

Normal load32 PSI front30 PSI rear

Fully loaded34 PSI front33 PSI rear

Load condition	Front	Rear	Status
Normal	32 PSI	30 PSI	Estimate
Fully loaded	34 PSI	33 PSI	Estimate

Calculate how much air to add

Frequently asked questions about Riley 1 1/2 Litre

These FAQs are generated automatically for this specific vehicle from the specifications, features and ownership data available in CarCareTool. Questions are selected by relevance so the page focuses on details that can actually be answered for this model.

What tire pressure should I use for the Riley 1 1/2 Litre?

For the correct setting, use the cold inflation pressure on the vehicle placard or in the owner’s manual. When CarCareTool does not have a verified configuration-specific value, its starting estimate is 32 PSI front and 30 PSI rear for normal load. This is an estimate, not an OEM recommendation.

What is the best engine oil for the Riley 1 1/2 Litre?

There is no single best engine oil for every Riley 1 1/2 Litre configuration. Use the viscosity grade and manufacturer approval specified for the exact engine in the owner’s manual.

What body style is the Riley 1 1/2 Litre?

The Riley 1 1/2 Litre is classified as a 4-door saloon; 2-door open 2 or 3-seater; 2-door 4-seater cabriolet.

What are the dimensions of the Riley 1 1/2 Litre?

The available source data lists length 1.5 L cars – 179 in (4,547 mm)2.5 L cars – 186 in (4,724 mm), width 63 in (1,600 mm), height 59 in (1,499 mm), and wheelbase 1.5 L cars – 112 in (2,845 mm)2.5 L cars – 119 in (3,023 mm).

Is the Riley 1 1/2 Litre FWD, RWD or AWD?

The listed drivetrain/layout for the Riley 1 1/2 Litre is FR layout.

Who makes the Riley 1 1/2 Litre?

The manufacturer listed for the Riley 1 1/2 Litre is Riley Motors.

When was the Riley 1 1/2 Litre produced?

The available source data describes production as 1945–1955.

Where was the Riley 1 1/2 Litre built?

The available source record lists assembly information as United Kingdom: Coventry, England (until 1949)United Kingdom: Abingdon, England (1949–1955).

What class of car is the Riley 1 1/2 Litre?

The Riley 1 1/2 Litre is listed in the Executive car (E); compact executive car (D) class.

Which markets or countries sold the Riley 1 1/2 Litre?

The CarCareTool catalog currently associates the Riley 1 1/2 Litre with NL, NZ. Market availability and specifications can differ.

What came after the Riley 1 1/2 Litre?

The available vehicle data lists Riley Pathfinder as a successor where applicable.

What replaced the Riley 1 1/2 Litre?

The available vehicle data lists Riley Pathfinder as the successor where applicable.

How often should I check the tire pressure on the Riley 1 1/2 Litre?

Check the tires regularly and before long trips, with the tires cold. Use the vehicle placard or owner’s manual as the source of the manufacturer’s recommended pressure.

Should I use the tire sidewall pressure for the Riley 1 1/2 Litre?

No. The maximum pressure printed on the tire sidewall is not automatically the vehicle’s recommended setting. Use the vehicle placard or owner’s manual for the correct cold inflation pressure.

Does the recommended tire pressure change when the Riley 1 1/2 Litre is fully loaded?

It can. Many vehicles specify a different cold pressure for heavier loads. Check the vehicle placard or owner’s manual for the exact loading condition.

Can the Riley 1 1/2 Litre have different tire pressures front and rear?

Yes. Some vehicles specify different front and rear pressures because axle loads and vehicle configurations differ. Follow the exact vehicle recommendation where available.

Why can mileage differ from the published figure for the Riley 1 1/2 Litre?

Published fuel economy is measured under a defined test method. Real-world mileage can vary with traffic, speed, temperature, tire pressure, payload, maintenance and driving style.

Data sources and verification are available in the page editor; exact specifications can vary by year, market, trim and engine.

Riley 1 1/2 Litre images

Vehicle images are shown from the stored source image records when available.