2016 BMW 335 3.0L Diesel · RF66 NNU

The most recent MOT test on the 2016 BMW 335 occurred on 2025-12-30, resulting in a clean pass with no recorded defects. However, the preceding MOT history reveals a pattern of recurring tyre-related issues, notably two dangerous failures—one nearside rear tyre bulge in 2024 and a nearside front tyre bulge in the same year—that necessitated immediate rectification. While the vehicle passed subsequent tests in 2025, the persistence of sidewall failures suggests underlying structural wear or manufacturing inconsistencies in the tyre construction, particularly at higher pressures or under dynamic loading conditions. The absence of further tyre-related failures since 2024 does not mitigate the risk; tyre integrity must be treated as a critical, high-priority concern, especially given the vehicle’s age and accumulated mileage. The recorded mileage of 96,522 miles for a vehicle aged ten years represents a moderate annual usage rate of approximately 9,652 miles per annum, which is within the expected range for a BMW of this class under typical UK conditions. However, the lack of significant mileage spikes or prolonged periods of high usage suggests the vehicle may have been driven less intensively than a working vehicle, potentially leading to accelerated wear in certain systems. The rear transmission oil seepage recorded in 2022, while classified as an advisory, indicates a persistent issue that could worsen with continued operation, particularly if the differential seals degrade further. This may not yet be critical but warrants monitoring, especially if the vehicle is subject to frequent towing or heavy loads, as differentials under such conditions can experience accelerated wear on seals and bearings. For the prospective buyer, the most urgent inspection should focus on the tyre condition, particularly the nearside front and rear tyres, which have already failed MOT due to sidewall bulges. Visually inspect the tread depth and sidewall integrity, paying close attention to any signs of separation, cracking, or bulging—especially along the shoulder regions where the failures occurred. On a test drive, listen for unusual tyre noise or vibrations, which could indicate internal tyre damage or uneven wear patterns. Given the history of sidewall failures, consider replacing the nearside front and rear tyres immediately, even if they still meet legal tread requirements, as these defects are highly likely to recur or progress into dangerous conditions. Additionally, the rear transmission oil seepage should prompt a check of the differential seals and fluid levels, with a recommendation to have the differential serviced if oil is visibly leaking or if the fluid appears dark or contaminated. Beyond the tyre and differential concerns, the buyer should conduct a thorough inspection of the vehicle’s structural and fluid integrity. Check for signs of standing corrosion, particularly around the rear wheel arches, suspension mounts, and underbody components, as prolonged idling or infrequent use can accelerate rust formation. Verify the condition of the 12V battery, ensuring it holds a charge and has no signs of corrosion or physical damage, as BMWs of this age often experience battery degradation over time. Inspect the brake system for signs of corrosion on discs or binding calipers, especially on the nearside rear where standing conditions may have exacerbated corrosion. Lastly, given the vehicle’s age, consider scheduling a comprehensive service check, including fluid top-ups (oil, brake fluid, coolant) and a review of the service book for any missed maintenance intervals, as BMWs require meticulous time-based servicing to maintain reliability. The presence of a nail in the nearside rear tyre from 2021, though an advisory, underscores the importance of regular tyre inspections for embedded objects or cuts that could compromise structure.