outahere Posted August 20, 2004 Author Share Posted August 20, 2004 [quote name='CombatCQB']Sorry to bring this up again, but this offset topic still has me a little confused. If the stock wheel has 53mm offset, any wheel with 48mm offset should work in it's place, assuming the same size wheel. The effect is a wider wheel base along with some other geometry with the wheel centerline and suspension angle intersection. Am I correct? With a 17x7.5 wheel, a 48mm would help balance out the wider wheel. So would any 17x7.5 +48, work with the GT sedan?[/quote] Going from the 55mm offset to a 48mm offset will push the wheel edge and the tire 7mm towards the fender lip, with the corresponding increased risk of the tire rubbing the fender lip. Link to comment Share on other sites More sharing options...
SUBE555 Posted August 20, 2004 Share Posted August 20, 2004 Actually, looks here [url=http://www.tirerack.com/wheels/tech/offset.htm]TireRack Wheel Tech[/url]. [quote]The offset of a wheel is the distance from its hub mounting surface to the centerline of the wheel. The offset can be one of three types.[/quote] [img]http://www.tirerack.com/images/wheels/tech/offset.gif[/img] If you move from a +55, 7" wide wheel to a +48, 7.5" wide wheel, you are doing less harm moving the wheel outward than keeping the higher offset. If you kept that offset, essentially you'd be shifting an extra 1/4" or ~6-7mm outward. By decreasing the offset by 7mm, essentially, the width is added to the inside for the most part. I'd be more worried about rubbing the suspension if I were going to be worried about it, but I sure won't be. That size has had no problems whatsoever on late model Subarus. Link to comment Share on other sites More sharing options...
brady_bunch Posted August 20, 2004 Share Posted August 20, 2004 Handy graphic... thanks! Link to comment Share on other sites More sharing options...
Boostjunkie Posted August 21, 2004 Share Posted August 21, 2004 Handy, but wrong conclusion, in fact 180* wrong. Relative to the hub surface, a 55mm, 7" wide wheel will have 143.9mm extending towards the suspension and 33.9mm extending towards the fender. A 48mm, 7.5" wide wheel, will have 143.25mm extending towards the suspension and 47.25 towards the fender. So in this example the 48mm, 7.5" wheel will actually place the inside edge of the wheel in almost exactly the same place as the stock wheel, while the outside edge will be 13.35 mm closer to the fender. I calculated these numbers myself, but here is an easy online calc. [url]http://toy4two.home.mindspring.com/offset.html[/url] Link to comment Share on other sites More sharing options...
SUBE555 Posted August 22, 2004 Share Posted August 22, 2004 That online calc doesn't work here. Hmm, I am backwards, doh! *slaps self upside head* That's what I get for posting with near zero sleep. Sorry folks, wasn't trying to confuse you. At least I got the visual correct. :lol: Link to comment Share on other sites More sharing options...
brady_bunch Posted August 22, 2004 Share Posted August 22, 2004 [quote name='Boostjunkie']Handy, but wrong conclusion, in fact 180* wrong. Relative to the hub surface, a 55mm, 7" wide wheel will have 143.9mm extending towards the suspension and 33.9mm extending towards the fender. A 48mm, 7.5" wide wheel, will have 143.25mm extending towards the suspension and 47.25 towards the fender. So in this example the 48mm, 7.5" wheel will actually place the inside edge of the wheel in almost exactly the same place as the stock wheel, while the outside edge will be 13.35 mm closer to the fender. I calculated these numbers myself, but here is an easy online calc. [url]http://toy4two.home.mindspring.com/offset.html[/url][/quote] And a 7.5" x 48mm offset would fit adequately, right? Link to comment Share on other sites More sharing options...
Legasee Posted April 2, 2005 Share Posted April 2, 2005 some good info for those wondering about wheel fitment! :) In Taiwan now... Link to comment Share on other sites More sharing options...
Xenonk Posted April 2, 2005 Share Posted April 2, 2005 [quote name='brady_bunch']And a 7.5" x 48mm offset would fit adequately, right?[/QUOTE] Yup, it works. Keefe Keefe Link to comment Share on other sites More sharing options...
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