my mate had a golf r32 a few years ago and he got hit from behind by a taxi,clearly not his fault as he was stationary at lights at the time,the car was 2 years old at the time and when it was new,came with dunlop sp sport tyres,now 2 weeks before the accident the replaced the worn out dunlops with michelin pilot sport as they had better reviews on performance cars etc.....anyway the insurance company wouldn't pay out as the tyre brand was not the same as it left volkswagen
as that's what volkswagen 'specified' the car should run on........