What size paddle tires for the rear of a TRX 90?

Thanks!

 

i have been looking for paddles also but for a predator 90, 18's would work i don't think you would want anything taller than that
from what i have read the kenda gecko's dont work very well the better choice would be the scat trak gliders they cost more but unless you want to keep pulling it out of the sand like with the gecko's, my friend has them on his kids raptor 80 and i wasn't impressed with them, not very many companies make them in 18's