I've got a flat rear tyre, tried to inflate it at the gas station but air was escaping as fast as I could inflate it. Not sure this is because of a huge leak or the fact it's a tubeless tyre which perhaps needs a special way of inflating?
Anyway, if that's not the case and I do need to replace the rear tyre, is that something I can do easily myself?
You need covers for rims, and 3 tire spoons, some elbow grease. Or bike shop with tire changing machine... 17" are hell to change, especially 100 - 110's. It's better for your mental health to talk with the shop and go there with whole wheel and new tire.