2017 Triumph Thunderbird 1.7L Petrol · VN17 OBJ

The vehicle is currently roadworthy, but the maintenance trend shows a shift from past neglect to emerging corrosion issues. The most recent test on May 15, 2026 at 10,236 miles identified a minor exhaust leak at the nearside rear back box joint and slight corrosion on the central brake pipe under the engine. While the bike passed, these advisories indicate that the metalwork is beginning to show signs of age-related degradation and environmental exposure despite the low overall mileage. The mileage profile is exceptionally low for a nine-year-old 2017-model Triumph Thunderbird, averaging only approximately 1,137 miles per year. There is a significant gap in testing history between November 2023 and May 2025, during which the vehicle covered only 213 miles. This pattern of infrequent use explains the critical failures seen in late November 2023, where the offside front and rear tyres were below the legal 1mm limit and the brake pads suffered from delamination. A buyer must physically inspect the braking system thoroughly, as the 2023 failure for delaminated pads suggests the brake material may have degraded or seized while sitting stationary. The recent report of corrosion on the brake pipe and exhaust joint requires a close look to ensure the rust is merely surface-level and does not lead to structural failure. Additionally, check the condition of the rubber hoses and tyre seals, as low-mileage vehicles often suffer more from dry rot and perished components than mechanical wear.