Don't worry, nothing I said is specific to newer bikes. Definitely, older bikes can present unique challenges but swapping tires hasn't changed. (Unless you get

Don't worry, nothing I said is specific to newer bikes. Definitely, older bikes can present unique challenges but swapping tires hasn't changed. (Unless you get into tubeless... I wouldn't recommend it for road riding...) How difficult it is to remove or replace a tire really comes down to the tire/rim combinations. Different types and sizes of tires can make a big difference. Some combinations can definitely be trickier to mount, but with the right it can usually be down without too much physical strain. Mechanics in the bike shop do it many, many times each day after all.