You don't say what tires you have so I am assuming that you have the stock 3 ply tires. I have used tire sealant in 3 wheeler tires with mixed results. It did seal the current leaks, but the next time I went into the bean field with the machine, I had problems again. I have also seen the results when you take the tire off the rim....not pretty
I would suggest better tires if you can swing it. I have 6 ply and 8 ply on my machines just for that reason. Even the Mud Lites on my 325 have stood up to the abuse. Maybe just newer tires. If there are any dry cracks on your tires, even a sealant isn't gonna hold up very well. Over time, the tire material dries out and gets brittle for lack of a better term. Or if the tread is worn out it could make a difference
2001 Magnum 325 with a blown engine; rebuilt 2004. Broke timeing chain 2016 rebuilt again and still running. Warn winch and Moose 60" plow
2007 Sportsman 500 EFI, Polaris Winch, 26" Bear Claw HTRs on Moose 427x Wheels. 12x7 front, 12x8 rear, QSC Clutch Kit
My Trail Machine:
2004 Sportsman 600 Twin, 25" RipSaw Tires on stock steel wheels, Moose rear box
Completed Project machine:
2001 Magnum 325 MOSE with a blown engine. Transplanted a 2005 Magnum 330 engine. Committed suicide on the trail Oct 2016. Spun Rod Bearing after oild cooler line failure. Rebuilding Engine.