The 25 mm tires when inflated to 6.5 bars rear and 5.5 bars front actually measure 28.5 mm. Because of this I can run these low pressures which make for a sublime ride. Frankly I have ben riding for 38 years and never have experienced this on any other road bike. Mind you that I am 6 feet tall and I weigh 190 lbs. I live in Florida where the winds are fierce and I have yet to notice any type of bobble with these wheels in a crosswind. How Enve accomplished that is just amazing. Finally these wheels just look so good on my all black Colnago C-60. Expensive yes but worth every penny. With the wonderful people at Bike Tires you even get amazing pricing on these wheels.