The larger diameter the wheel the rougher the ride. In other words 15's will give you a smoother ride than 17's.The more sidewall tire the more comfortable the ride.
The key is compromise. The OEM wheels available on the 4G are 17's , 18's & 19's. I just don't like the look of the 17" wheels, so I opted for the 18's. The 19's look awesome, but I am willing to compromise the looks of the 19's for the greater comfort of the 18's.
2012 Nissan Maxima SV (Winter Frost & Charcoal)
2011 Toyota 4Runner SR5 (Blizzard Pearl & Graphite)
2003 Nissan Maxima Titanum Edition(Silver w/Black Int)
1997 Toyota 4Runner SR5(White w/Taupe Int)
1966 Ford Mustang Coupe(SilverBlue & Blue/White Int)
Like what jspagna1 said, its about compromise. I will just add that its also about priorities. I wish I could have gotten the 18/19's because they look awesome! During my test drive, the 18s definitely rode harsher than the 17s. I test drove through a rough street and my friend sitting in the back felt like she was bouncing around. I went with the 17s because of cost, softer ride and I do chauffeur my older relatives around quite often and I don't want them to have what they would consider a jarring ride.
Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Acurazine.com content, comments, or advertising. Acurazine.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Acurazine.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.