Depends on what you mean by improve. I went from 15" with 205/55 to 17" with 215/40 and the ride did get a little harsher but ride control increased quite a bit especially in the turns. I guess it depends on what you are looking for. Going up 1 inch and down a few percent in profile I do not think would affect you ride adversely. Just my opinion.

__________________
Sent from an agnostic abacus

2014 C250 21,XXX my new DD ** 2013 GLK 350 18,000 Wife's new DD**

- With out god, life is everything.
- God is an ever receding pocket of scientific ignorance that's getting smaller and smaller as time moves on..." Neil DeGrasse Tyson
- You can pray for me, I'll think for you.
- When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours.