mileage problems are very common , when you think you are asked for the mileage at tyre changes ,services,mot's,tax renewal etc.it is very easy for someone to put down the wrong number or sometimes just round up the figures for example 79,555 can be put down as 80,000 .got to be honest i did it myself today when getting tax online for my van i just rounded up the number because i was not with my van at the time .put down 105,000 and its around 104,000+ .the problem arises when i go and get tyres in the next few days and the bloke who fits them puts in the exact mileage thus making a mileage discrepancy with HPi