I'm looking to replace the tires on my 07 TE250. While deciding between the Motoz that are getting high marks here and a combination of Pirelli Scorpion Pro front and MT16 rear. I'm wondering about rear sizing. The MT16 doesn't seem to come in the stock 120/90-18. What is recommended? 110/100-18? Would the 120/100-19 be too tall? Any thoughts? TIA Dan