Tire Size Help

I am running a 1.85 x 18 front wheel and a 2.15 x 18 rear wheel...I was gonna put a 100/90 on the frt and 110/90 on the rear....this sound right....I am new to these small wheels and tires....I want it to handle to best of its abilities so help me out with suggestions....

The front tire is too big for the recommended size for your front wheel and the rear is at the marginal size for the rear rim.
The 110/90 is the standard for a 2.50 rim as is the 100/90.
An 80/90 is the standard recommended size for a 1.85 rim and a 90/90 for the 2,15, going bigger squeezes the sidewalls in adversely effecting your handling. google "motorcycle tire wheel size chart" and check out the proper sizing.

Im not gonna say it was a -good- little idea, but i put a 130/70-18 on my rear before. Its usually had 3.50 or 4.00's on it. It was a Dunlop D404 front tire if memory serves. Again, this may have been dangerous and i got lucky but you can push them sizes farther than you think.

If you need a quick cheap tire get the m62 gazelles from mss. $35 shipped and they have em in 3 and 3.5x18.