I ran the measurements and you will have over 1.5 diameter difference, which changes your speedometer reading and according to the website is not safe in regards possible break failure.
I do not know about your drop though.
"Speedometer Difference: 6.413% too fast Diameter Difference: 6.04%"
"When changing tire sizes, we recommend staying within 3% of the diameter of the original tire. Any more than this and you face the risk of brake failure."
http://www.1010tires.com/TireSizeCal...?action=submit