I can't imagine trying to squeeze that on a 4" rim, unless you have some other wheel installed.I have Metzeler ME880 200/70-15. Bought it for Usd 225 from Ridersdirect on ebay. Needs to be installed without air and then pumped up after installation. I cant imagine fitting any wider than that....
Not to mention the stock size is only about 25" tall, yours would come out to be 27.6"
How about some pics?

