I'm currently running 215/45/17 Kuhmo summer tires. The LM-25 are on sale right now and only available in selected sizes.
Hmm... I'd say your current tires are a smidgen too big as well, cuz they're 3.1% bigger than OEM, while these 205/45/16 are 2.8% too small. Generally speaking, a 3% difference is pretty much the threshold figure, but I always felt you shouldn't get too close to the threshold.
-Lik