Originally Posted by SouthArk370Z

Changing tire size will not fix your problem - shorter tires will provide more wheel-well clearance but will lower the bumper even more.


Stop throwing parts on your car without understanding what you are doing. Most mods will have unintended effects on other systems - ofttimes those effects are adverse.

Do some research and planning. Almost every mod you can make to a 370Z has been discussed on this site. Save yourself a lot of headaches and read up on what other people have done.