The axle spacing on my 2013 Silverback will not allow LT's to fit. As a matter of fact I found 14 ply ST's and they will not fit. I went with a Maxxis ST. Anyone run into this alxe spacing thing? Two...
You should be fine with the right "G" rated LT tire. The Goodyear and the Sailun both are basically the same size as your ST tires. Clearance shouldn't be an issue. AFATG the new Sailun are rated an ST tire so you'd be fine to get them changed by anyone.
The spacing on my axles is 33" and I'm running "G" rated Sailun LT tires.