previous note on 13-nov 359285: 140 смяна + 8лв пликове + 16лв смяна датчици 6 мес гаранция: ремонт + ребаланс Tyre swap: winter on Total km winter: 12.6k Total km summer: 13.1k + 14.5k = 27.6k Thread depth measurements (out towards inside; measurements close to edge are taken in the middle of the thread block): ========== Summer tyres ========== when taken off on 359,285 km (27.6k): # kms for the season: 14.5k FL / FR: 6.2/5.6/6.2 (-0.8/-0.9/-0.8) RL / RR: 5.8/5.4/5.9 (-0.7/-0.6/-0.6) when taken off on 337,725 km (on 13.1k): # kms for the season 13.1k FL/FR: 6.5/6.0/6.5 (-0.5/-0.5/-0.5) RL/RR: 6.8/6.5/6.8 (-0.2/-0.3/-0.2) On 333,484 km (on 8.9k): FL/FR: 7.0/6.5/6.5/7.0 RL/RR: 7.0/6.8/6.8/7.0 ========== Winter tyres ========== when taken off on 344,792 km (12.6k): # kms for the season 7.1k # note: RL changed on 343,000km (10.8k) FL: 6.8/7.3/6.8 (-0.2/-0.3/-0.2) FR: 6.7/7.2/6.7 (-0.3/-0.4/-0.3) RL: 7.4/7.9/7.4 (+0.4/+0.2/+0.4) RR: 6.7/7.4/6.7 (-0.3/-0.3/-0.3) when put on on 337,725 km (5.5k): # kms for the season 5.5k FL/FR: 7.0/7.6/7.0 RL/RR: 7.0/7.7/7.0 # NOTE: when calculating deltas, note if it's when the tyres are "put on" or "taken off" # NOTE: life projections: Summer: total km for calculation: 18.7k thread depth loss centre: 1.15 thread depth loss edges: 1.0 avg loss 1.075mm -> 0.058 mm/1000km overall life expectancy: 7mm->1.3mm 100k currently centre: 5.5mm; left: 4.2mm, or ~78k, or ~5 years. Winter: total km for calculation 7.1k thread depth loss everywhere: 0.3-0.4mm avg loss 0.042-0.056 mm/1000km overall life expectancy: 8mm->4mm ~70-95k projection centre: 7.3mm->4mm: 59-78k more or 7-9 years projection edge: 6.7mm->4mm: 48-64k more or 6-8 years

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