I found a web sight with a cool tire size calculator, when I entered your tire information it came up with:
Speedometer reading with new tire is 5.33% too slow.
When your speedometer is reading 60mph you are actually traveling 63.04mph.
web page is: http://www.tiresizecalculator.info/
to answer your question, if the difference in speedo is ok, there is a 5/8 " taller radius so clearence shouldn't be an issue and the new tire is 5/8 " wider, should be ok as well.
hope this helps