2017 Triumph S 0.7L Petrol · LY66 OAL

The Triumph S presents a mixed maintenance picture. The most recent MOT on 28 April 2025 at 53,278 miles passed, but only after a failure on 4 April 2025 at the identical recorded mileage. That April 2025 failure flagged a significantly worn front brake disc, a binding front caliper, a headlamp aim deviation, and a front tyre worn close to the legal limit. The subsequent pass twelve days later suggests a one-off repair event rather than a sustained pattern of care. Several advisories carried over from the failure into the pass, including a minor exhaust gas leak, worn rear brake pads close to the minimum limit, a worn rear brake disc, and a slightly misaligned wheel. The trend is not clearly improving; it reflects a reactive approach where critical brake and lighting faults were corrected only when the bike failed. Mileage accumulation is notably uneven. Between 26 January 2022 at 38,866 miles and 16 January 2023 at 45,246 miles, the bike covered 6,380 miles in roughly twelve months. From that January 2023 test to the April 2024 pass at 52,732 miles, a further 7,486 miles were added over fifteen months. Yet from 5 April 2024 to 28 April 2025, the recorded mileage moved just 546 miles across a full year. The odometer has effectively stood still for the past twelve months. This plateau raises the possibility of prolonged storage, which can cause stale fuel, dried seals, tyre flat-spotting, and moisture ingress into the exhaust and braking systems. A buyer should focus the physical inspection on the front braking assembly. The tester identified a binding front caliper and a significantly worn front disc during the April 2025 failure. Even though the subsequent pass cleared the item, the underlying caliper seizure risk may persist if the piston or slider pins were not properly rebuilt. Check for uneven pad wear, disc scoring, and any drag when spinning the front wheel. The rear brake pads were noted as close to the minimum limit at the April 2025 pass, so verify remaining friction material thickness and inspect the rear disc for lipping or heat discolouration. The minor exhaust leak advisory has appeared in consecutive tests. Trace the header joints and silencer connections for carbon staining, as a worsening leak can affect low-end torque and emissions compliance. The drive chain was flagged as worn but not excessive in both 2025 tests. Assess stretch at the rear sprocket and look for kinked or seized links, particularly given the low recent mileage that may indicate infrequent lubrication. The wheel alignment advisory also appeared in both 2025 tests, so check the front and rear wheel alignment using a laser or straight-edge method, and inspect the swingarm and wheel bearings for any play that could indicate misalignment from impact rather than simple adjustment drift. The deteriorated registration plate and insecure nearside handlebar grip are minor cosmetic items, but their presence alongside brake and alignment faults suggests a general attitude of deferred maintenance rather than neglect of safety-critical systems alone.