Differences Between Flat 15x6 and Deep 15x6 Wheels, Inquiring minds... Options

[gcrotvik]

I'm considering purchasing a set of deep 6's. I'm confused as to the differences between the "flat" and "deep" 15 x 6 wheels. I understand they are deeper dish but what does that actually mean in terms of fitment? Both are 6 inches wide and have an offset of 36 and a backspace of 112. To me (I may be wrong, that's why I'm asking), that means the fitment, measured from the inner lip of the wheel well to the outside lip of the rim is exactly the same for both wheels. If so, when why are the deep 6's all the rage? Because they look "deeper"? See the reference chart below.

Educate me please!! Thanks. If this topic has been covered here before, my apologies.

Greg

[gulf908]

Greg

what year is your -6 and how correct do you want it ?
the dividing date for the deep/flat wheels is 26 March 1971 according to the workshop manual so the -6 show car guys are understandably keen to get hold of the correct wheels
My understanding is the hearts were on the '69 MY 6" wheels only and deep non hearts thereafter
Another thing to consider is the flats have a safety lip to assist with a flat tyre staying on the rim
The deeps don't have this lip and in the technology of the day would have had a tube.These days,so my suspension guy tells me,modern tyres are not designed with a tube in mind and might overheat
I had to decide this on my recent 2.2 S
I got around this with my 914-6 by changing from 5.5" x 14 deeps to 6" x 15 flats with 195/65s and noone here can tell the difference unless they really know 914s

HTH
Dennis (IMG:style_emoticons/default/smile.gif)