1. weight can be close 0.2 lbs difference or even same weight.
2. Both have same concave, +45 offset goes inside by 5mm but still has very nice small tiny flush, will give room for wider tires, if you later want to have a turbo or a Supercharger.
3. quality is the same both are made in Japan, I suggest offset 45+ and save cash for tires,
get 45+ BECAUSE JDM!
http://www.ft86club.com/forums/showp...&postcount=194