Hi and welcome, I'm sure all your questions will be answered soon enough, tyres in my opinion you'd be better changing for the rainy season
It's not like the rain we get in the uk,
Don't think you'll be able to I'm much wider as you'll be hitting the chain swing arm etc
And you'd effect the way the bike handled as the sidewalls would be at angles it's not designed for

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K+N filter, snorkel removed, homemade kev mod (with his blessing), co raised,
Pipeworx cans, r1 led back light, under tray removed, small indicators, handguards, cnc short levers,