Tire Question

Hey folks,

I've got a set of Eagle RS-A 225/16R50 tires riding on stock 16" alloys. They are basically racing slicks at this point so I want to replace them. I can get the exact same tires at Canadian Tires for about $600 installed. I went to my mechanic and he can sell me a set of (near new) 225/16R60 for about $150. Now I really like the low profile look of my current tires, for 16s they sit really well. Is there going to be a noticeable difference if I go for the R60s? How much of a difference should I expect in MM?