In this sizing instance, it actually looks like you will be driving at a slower speed than indicated on the speedometer.

I've been using 1010tires.com to consider different alternatives, close to deciding on sizes, and did a quick comparison of yours to the stock sizes. On the front it gave this warning since you are at 3.43% of change in diameter.

Warning! 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