If the circumference of the new tire is larger or smaller, yes. You shouldn't notice a big change though with this tire size. I am sure there's documentation somewhere with exactley what the change will be but my guess is your speedo will be reading +1 mph.
Cool thanks for the help...yeah I want to go a little bigger. I had the stock 16s and the stock tires than when to 17in rims with low profile tires. They are acually identical in size...just different tire to rim size