redd,
Yes, but there are a lot of different offsets listed on the JBL website. Depending on the model and driving preference, each can be a little different. I decided my driving preference best fit the "Road use and mild competition" scenario, hence 4.75/8 front/rear. There are plenty of straights and nice twisties in my neck of the woods to put those porsche fanatics back in their place (reading my plate until the eye sight fails)
