I’ve just got a new 80 mm front wheel for my Fondriest , so instead of 50/80 , I now have 80/80 mm and I’ve just tested it for 1 1/2 hours on the Wirral lanes .. Wow ! What a difference .. It just feels a lot stiffer on the front end and climbing is certainly easier with no flex in the front wheel at all.. AMAZING .. Great the noise it makes too .. LOVE IT !!