2017 BMW M4 3.0L Petrol · HT17 RBY

Recurring brake component deterioration and tyre wear represent the primary mechanical concerns for this vehicle, as evidenced by the most recent MOT pass on 30 January 2026. While the vehicle has maintained a passing status since 2021, the recent inspection shows a significant trend of advisory notices regarding the condition of the braking system. Specifically, all four brake discs were flagged as worn, pitted, or scored, with the nearside front disc noted as being in a condition requiring immediate replacement. This pattern of advisories suggests a progressive decline in the state of the braking hardware over the last two years, moving from general pitting in 2025 to more critical wear levels in 2026. The recorded mileage of 50,051 miles over approximately nine years indicates a low annual usage rate of roughly 5,561 miles. This pattern of relatively infrequent use can often lead to specific mechanical issues, such as the surface corrosion and pitting observed on the brake discs, which frequently occurs when vehicles are not driven hard enough to clear surface oxidation or when they sit stationary for extended periods. While lower mileage generally implies less cumulative wear on drivetrain components, the documented history of worn tyres and pitted discs suggests that the vehicle's usage profile may be contributing to surface degradation of consumable parts rather than traditional wear through high-frequency mileage. A prospective buyer should prioritise a thorough inspection of the braking system during a test drive. Given the advisories for pitted and scored discs across all four corners, it is essential to check for any pedal judder or vibration under braking, which can indicate warped or unevenly worn discs. Additionally, the presence of multiple advisories regarding tyres being worn close to the legal limit or having cords visible near the surface necessitates a physical inspection of the tread depth and sidewall integrity. Pay close attention to the nearside rear tyre, which was flagged for being extremely close to the legal limit with cords visible, as this represents a significant safety concern that should be addressed immediately. Beyond the braking and tyre issues, the mechanical assessment should include a check of the windscreen washer system to ensure the previous failure regarding insufficient liquid has been fully rectified. While the recent history is dominated by consumables, the low annual mileage means that rubber components, such as suspension bushes or seals, should be inspected for signs of perishing or cracking due to age rather than wear. During the test drive, listen for any irregular knocks or clunks over bumps that could indicate that the low usage has led to the hardening of suspension components, though the current MOT record focuses almost exclusively on the degradation of the braking surfaces and tyre tread.