What you're thinking of is PROBABLY the width in millimeters, if the markings are something like 185/60R15.5 (although everything after "185/" might be different in your case, but that's just an example. The "185" indicates the tire width in that instance.
Great website with pictures of the tire: http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=33
no
No, never mix tire sizes.
185 is larger
No, it will not.
The Tire Size is 185/70/R14
Definitely no.
No, the 185 70 r14 tire cannot be substituted for a 175 65 r14 tire. The 70 series tire has a larger diameter and is not recommended that you substitute on a 65 series tire.
Yes, you can use a 185/65 R15 tire instead of a 185/60 R15, but there are important considerations. The 185/65 tire has a taller sidewall, which may slightly affect the handling and speedometer accuracy. Additionally, the overall diameter of the tire will be larger, potentially impacting clearance and suspension geometry. It's advisable to consult your vehicle's specifications or a tire professional before making the switch.
Yes, it will
The standard tire size for a 2008 Nissan Versa is 185/65R15. This means the tire is 185 millimeters wide, has an aspect ratio of 65%, is a radial tire, and is designed to fit on a 15" rim.
Usually it can, but we need to see the WHOLE tire number to say for sure.