I don't think this is particularly uncommon, but for anyone curious, here's a pic of my FL350 with larger than stock tires

The tires are Dirt Devil 25x12-10
The wheels are AMS steel 10x8, 4/110, 3+5
I have 1-inch spacers that also adapt the bolt pattern. Getting this size wheels with the correct 4/130 bolt pattern is a challenge.

Driving with these tires vs. the 24x11's, there's a lot less spinning on take-off and a lot more "go"

I see:
1) Stock rear springs: You therefore have NO suspension. These must be changed.
2) No shock savers: You have to fix that or you'll bend your rear shock if you blow a u-joint.
3) Missing gas tank: Closer inspection shows some kind of clear plastic gas tank mounted above the Engine and up high. Fukme bro -- you are going to roast yourself like a chicken in a roll over. While making power slides or throttle turns, an oddy will tip over easy if you hook a wheel. I have been on fire in one of my race cars many years ago. I don't recommend it.
CO

All in good time! All the things you mention are planned or already in the works. But I have only so much free time each week and only so much energy to get things done! Working a full day and then on the buggies til 10pm leaves me pretty exhausted!

btw, the tank is from a 4-wheeler and was mounted there by the PO. It fits in there pretty decent actually and is protected by the frame and will not be damaged from a roll over (ask me how I know )