2016 BMW 420 2.0L Petrol · YK66 BVM

A recurring pattern of tyre damage dominates the MOT record, with repeated advisories for cuts on both rear sidewalls and progressive wear on the off‑side rear tread, culminating in a dangerous bulge on the off‑side front tyre that caused a failure in late 2021. The most recent test on 17 November 2025 was a clean pass, yet the tyre advisories have persisted for several years, indicating that the underlying issue has not been fully resolved and that tyre condition remains the principal mechanical concern. At 38,104 mi for a 2016 model, the vehicle averages roughly 3,800 mi per year, well below the typical UK usage rate. Such low mileage often points to limited daily driving or extended periods of inactivity, which can exacerbate tyre ageing and rubber hardening even when tread depth appears acceptable. The MOT chronology shows no gaps in annual testing, confirming regular inspection despite the modest mileage, but the low‑use profile means that wear on drivetrain components is likely minimal while tyre rubber may have deteriorated from age rather than distance. Prospective buyers should give the tyre set a thorough visual and tactile inspection. Look for any fresh cuts, sidewall bulges, or cracking on all four tyres, and verify that the tread depth on the off‑side rear tyre exceeds the legal minimum and is even across the width. During a test drive, listen for thumping or vibration that could signal internal tyre damage, and monitor whether the car pulls to one side, which may indicate misalignment or uneven tyre wear. Because the off‑side front tyre previously exhibited a structural bulge, it is prudent to confirm that the current tyre has been replaced with a fresh, correctly sized unit and that the wheel rim shows no signs of impact damage. Although no brake, suspension, or emissions failures appear in the MOT history, the age of the vehicle and its low‑use pattern warrant a comprehensive check of the suspension bushes, steering components, and brake discs for any corrosion or fatigue that may not have triggered a defect yet. Pay particular attention to any knocking noises over bumps, pedal judder under braking, or steering pull at steady speed, as these symptoms can reveal emerging wear that the MOT record has not captured. Replacing the entire tyre set, preferably with tyres of matching specifications and recent manufacture dates, will address the dominant risk highlighted by the MOT history and provide a solid baseline for further mechanical appraisal.