If your interested. Here's a link to the tires I bought. Very cheap and the delivery was unexpectedly fast. Came before tracking said they were supposed to.
http://www.amazon.com/gp/product/B00...ilpage_o02_s00
Nevermind the different looking tread pattern. Idk why they used this pic but the tires are the same tread pattern. I was concerned when i ordered but all was good on delivery.
http://www.amazon.com/gp/product/B00...ilpage_o03_s00
This one is 110/80 r18. If I had to do it over it would've got the 120/80 r18. The 110 is about as wide as the stock front knobby.
And I used stock rear tube and bought a new 90/90 21 front tube. Don't know if I had to but didn't wanna not buy it to find out I should of. Hope this helps.