I've just measured all my pairs of 34" jeans and they are consistently 36". I only buy Paul Smith these days because I've come to know that they will fit me well without having to shop around.
Last time I was measured for a suit I came out at almost exactly 34", but then the fitting for suit trousers is much more snug than those for jeans. I wear a belt with my jeans whereas I'd expect trousers to hold themselves up.
So on that basis, I'm not too surprised that jeans made to fit a 34" waist are an inch or two larger, but more than that seems a little crazy.
Last time I was measured for a suit I came out at almost exactly 34", but then the fitting for suit trousers is much more snug than those for jeans. I wear a belt with my jeans whereas I'd expect trousers to hold themselves up.
So on that basis, I'm not too surprised that jeans made to fit a 34" waist are an inch or two larger, but more than that seems a little crazy.