249
27*9=243
The multiples of 9 arex9=9x9=18x9=27x9=36x9=45x9=54x9=63x9=72x9=81x9=90x9=99x9=108
27x9's would be good if you wanna be conservative, but if u wanna push it, you could get 28x10's, but you may need to flip your tie rods depending on the lugs on your tires. i have an o4 sportsman 500 on 28 in silverbacks with 2 in lift and spacers and i have ho clearance problems.