CARCARETOOL VEHICLE GUIDE

Riley Pathfinder

Riley Pathfinder — 4-door saloon, 2.5-litre, twin-cam Straight-4. Explore engine specifications, fuel economy, dimensions, tire sizes, seating, maintenance and tire-pressure guidance.

Engine2.5-litre, twin-cam Straight-4

Transmission4-speed manual, optional overdrive3-speed automatic (from 1956)

About the Riley Pathfinder

Riley Pathfinder is a 4-door saloon in the full-size car class. The available vehicle data lists 2.5-litre, twin-cam Straight-4 as an engine configuration, paired with 4-speed manual, optional overdrive3-speed automatic (from 1956). Public source material describes the model in the context of its design, market positioning and vehicle history.

This Riley Pathfinder guide focuses on the details drivers commonly want to know, including engine information for 2.5-litre, twin-cam Straight-4 and 4-speed manual, optional overdrive3-speed automatic (from 1956) transmission information. Exact specifications should be matched to the relevant model year and market.

Riley Pathfinder 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	Pathfinder
Model years	Not specified
Body style	4-door saloon
Vehicle class	Full-size car
Manufacturer	Riley Motors Limited
Production	1953–19575,536 made
Market / country	GB, NL, NZ

Engine, transmission and performance

Engine information for the Riley Pathfinder includes 2.5-litre, twin-cam Straight-4.. Published power figures include 106 bhp @ 4,500 rpmTax rating 16hp.. Transmission information includes 4-speed manual, optional overdrive3-speed automatic (from 1956).

Engine	2.5-litre, twin-cam Straight-4
Transmission	4-speed manual, optional overdrive3-speed automatic (from 1956)
Power	106 bhp @ 4,500 rpmTax rating 16hp

Dimensions, weight and practicality

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

Wheelbase	113.5 in (2,883 mm)
Length	183 in (4,648 mm)
Width	67 in (1,702 mm)
Height	60 in (1,524 mm)

Riley Pathfinder performance and economy

Power	106 bhp @ 4,500 rpmTax rating 16hp

Riley Pathfinder other specifications

Image	Riley Pathfinder 2443cc 1956.JPG
Caption	Riley Pathfinder
Name	Riley Pathfinder
Configuration	straight four
Displacement	2.443 L
Bore	80.5 mm (3.2 in)
Stroke	120 mm (4.7 in)
Valvetrain	high-lift camshafts, push-rod operated 90 degree angled overhead valves
Compression	6.9 : 1
Fuelsystem	Twin H4 SU carburettors

Riley Pathfinder 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 Pathfinder	1953–19575,536 made	2.5-litre, twin-cam Straight-4	4-speed manual, optional overdrive3-speed automatic (from 1956)	Not specified
Riley 2½-litre Big Four	1937–1957	Not specified	Not specified	Not specified

TIRE PRESSURE

Recommended tire pressure for Riley Pathfinder

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 Pathfinder

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 engine does the Riley Pathfinder have?

The available source data lists the Riley Pathfinder engine as 2.5-litre, twin-cam Straight-4. Engine availability can differ by model year and market.

What tire pressure should I use for the Riley Pathfinder?

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 Pathfinder?

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

What body style is the Riley Pathfinder?

The Riley Pathfinder is classified as a 4-door saloon.

How much horsepower does the Riley Pathfinder have?

The published figure for the Riley Pathfinder is 106 bhp @ 4,500 rpmTax rating 16hp. Output can vary by engine and specification.

What are the dimensions of the Riley Pathfinder?

The available source data lists length 183 in (4,648 mm), width 67 in (1,702 mm), height 60 in (1,524 mm), and wheelbase 113.5 in (2,883 mm).

What transmission does the Riley Pathfinder have?

The available source data lists 4-speed manual, optional overdrive3-speed automatic (from 1956) transmission options for the Riley Pathfinder.

Who makes the Riley Pathfinder?

The manufacturer listed for the Riley Pathfinder is Riley Motors Limited.

When was the Riley Pathfinder produced?

The available source data describes production as 1953–19575,536 made.

What class of car is the Riley Pathfinder?

The Riley Pathfinder is listed in the Full-size car class.

Which markets or countries sold the Riley Pathfinder?

The CarCareTool catalog currently associates the Riley Pathfinder with GB, NL, NZ. Market availability and specifications can differ.

What came after the Riley Pathfinder?

The available vehicle data lists Riley Two-Point-Six as a successor where applicable.

What replaced the Riley Pathfinder?

The available vehicle data lists Riley Two-Point-Six as the successor where applicable.

How often should I check the tire pressure on the Riley Pathfinder?

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 Pathfinder?

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 Pathfinder 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 Pathfinder 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 Pathfinder?

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 Pathfinder images

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