Hey guys, is the right way to win is to use your shells/bananas for defense and leaving the other items for offense only? I won a few times for that.
I find there's no real way to properly defend yourself. When a red comes, it's always nice to have a banana or green for protection, but there's no telling what that red might
do. I've had cases where I was in first, a red shell came, passed me, then spun around and hit me from the
front.
Also, MK8 is very picky about where your held item is. If you're drifting and have an item out, and a red shell comes, if you're turned slightly so the item you're holding isn't actually blocking behind you, the red shell still hits. It's ridiculous, but how Mario Kart works.
I've always been a major backspammer. Create as much space as you can between yourself and second place. This way you have room if you make a mistake or if a blue shell comes and can recover.
I love spamming bombs though. Yesterday on Ribbon Road I got two in one race from the same set of boxes and threw both down on the first boost jump. No one could avoid it, pretty much giving me second place for that race. (Because ofc I can never compete with my friend Kent >.>).