CARCARETOOL VEHICLE GUIDE

Triumph Roadster

Triumph Roadster — convertible, 1800: 1776 cc;Barker; 2000: 2088 cc; OHV I4. Explore engine specifications, fuel economy, dimensions, tire sizes, seating, maintenance and tire-pressure guidance.

Triumph Roadster
Engine1800: 1776 cc;Barker; 2000: 2088 cc; OHV I4
Transmission1800: 4-speed manual; 2000: 3-speed manual

About the Triumph Roadster

Triumph Roadster is a convertible in the sports car class. The available vehicle data lists 1800: 1776 cc;Barker; 2000: 2088 cc; OHV I4 as an engine configuration, paired with 1800: 4-speed manual; 2000: 3-speed manual. Public source material describes the model in the context of its design, market positioning and vehicle history.

This Triumph Roadster guide focuses on the details drivers commonly want to know, including engine information for 1800: 1776 cc;Barker; 2000: 2088 cc; OHV I4 and 1800: 4-speed manual; 2000: 3-speed manual transmission information. Exact specifications should be matched to the relevant model year and market.

Triumph Roadster specifications at a glance

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

Make Triumph
Model Roadster
Model years Not specified
Body style convertible
Vehicle class Sports car
Manufacturer Standard Motor Company
Production 1800: 1946–1948, 2501 made;Lawrence; 2000: 1948–1949, 2000 madeLawrence
Market / country NL, NZ

Engine, transmission and performance

Engine information for the Triumph Roadster includes 1800: 1776 cc;Barker; 2000: 2088 cc; OHV I4.. Transmission information includes 1800: 4-speed manual; 2000: 3-speed manual.

Engine 1800: 1776 cc;Barker; 2000: 2088 cc; OHV I4
Transmission 1800: 4-speed manual; 2000: 3-speed manual

Dimensions, weight and practicality

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

Wheelbase 100 in (2,540 mm)Barker
Length 168.4 in (4,277 mm)Barker
Width 64 in (1,626 mm)Barker
Kerb / curb weight 1800: 2540 lb; 2000: 2460 lb

Triumph Roadster other specifications

Sp uk
Image 1947 Triumph Roadster TR 1800 Classic-Gala 2025 DSC 1174.jpg
Caption Triumph 1800 Roadster
Name Triumph Roadster

Triumph Roadster 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
Triumph Roadster 1800: 1946–1948, 2501 made;Lawrence; 2000: 1948–1949, 2000 madeLawrence 1800: 1776 cc;Barker; 2000: 2088 cc; OHV I4 1800: 4-speed manual; 2000: 3-speed manual Not specified

Triumph Roadster 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

✓Some of the electro-hydraulic mechanisms were concealed between the twin skins of the body
TIRE PRESSURE

Recommended tire pressure for Triumph Roadster

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 load34 PSI front32 PSI rear
Fully loaded36 PSI front35 PSI rear
Load condition Front Rear Status
Normal 34 PSI 32 PSI Estimate
Fully loaded 36 PSI 35 PSI Estimate

Calculate how much air to add

Frequently asked questions about Triumph Roadster

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 Triumph Roadster have?
The available source data lists the Triumph Roadster engine as 1800: 1776 cc;Barker; 2000: 2088 cc; OHV I4. Engine availability can differ by model year and market.
What tire pressure should I use for the Triumph Roadster?
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 34 PSI front and 32 PSI rear for normal load. This is an estimate, not an OEM recommendation.
What is the best engine oil for the Triumph Roadster?
There is no single best engine oil for every Triumph Roadster configuration. Use the viscosity grade and manufacturer approval specified for the exact engine in the owner’s manual.
What body style is the Triumph Roadster?
The Triumph Roadster is classified as a convertible.
What are the dimensions of the Triumph Roadster?
The available source data lists length 168.4 in (4,277 mm)Barker, width 64 in (1,626 mm)Barker, and wheelbase 100 in (2,540 mm)Barker.
What transmission does the Triumph Roadster have?
The available source data lists 1800: 4-speed manual; 2000: 3-speed manual transmission options for the Triumph Roadster.
Who makes the Triumph Roadster?
The manufacturer listed for the Triumph Roadster is Standard Motor Company.
When was the Triumph Roadster produced?
The available source data describes production as 1800: 1946–1948, 2501 made;Lawrence; 2000: 1948–1949, 2000 madeLawrence.
How much does the Triumph Roadster weigh?
The available source data lists a kerb/curb weight of 1800: 2540 lb; 2000: 2460 lb. Actual weight can vary with engine, trim and equipment.
Where was the Triumph Roadster built?
The available source record lists assembly information as United Kingdom: Coventry.
What class of car is the Triumph Roadster?
The Triumph Roadster is listed in the Sports car class.
Which markets or countries sold the Triumph Roadster?
The CarCareTool catalog currently associates the Triumph Roadster with NL, NZ. Market availability and specifications can differ.
What came after the Triumph Roadster?
The available vehicle data lists Triumph TR2 as a successor where applicable.
How often should I check the tire pressure on the Triumph Roadster?
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 Triumph Roadster?
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 Triumph Roadster 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 Triumph Roadster 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 Triumph Roadster?
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.

Triumph Roadster images

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

Triumph Roadster photo
Triumph Roadster photo