I've been supplied mis-matched tyres, 700c x 32mm and 35mm, my supplier more or less told me to quit moaning, it was only 3mm. I wanted a pair of Schwalbe Delta cruisers 32mm, they were to be for my hybrid and they are strong enough for towpath stuff and not too big to spoil my road riding, I had them on my last bike and was comfortable with them, that's my total knowledge of tyres.. However I now have one of them and one Schwalbe Marathon plus 35mm! A good tyre by all accounts but a different size and tread pattern! I have never needed tyres before, I've always changed bikes before needing new ones, am I stupid? Am I am moaning git? Am I missing something about cycle tyres? I mean, nothing would get me to ride my motorcyle on mismatched and different sized tyres.