offset, width, and dish questions
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Joined: Feb 2006
Posts: 235
From: Austin, Texas
offset, width, and dish questions
As far as I understand, there are three types of wheels in terms of offset. Which is for which gets a little trickier:
http://www.tirerack.com/wheels/tech/...jsp?techid=101
My first question is, if the stock Tc's offset is 45mm, will a wheel of same width with a 15mm offset push the wheels out 30mm? I would prefer avoiding spacers.
My second question is, if I want wider aftermarket wheels/tires, what will offset do as width increases? If I buy 9" wide wheels, for example, does that extra width go on the inside or outside of the wheel? I also understand that dish will play a role if the wheels have a dish, or lip. That, added to whether it's a negative or positive offset wheel makes for some tough calculations.
Keep in mind, my goal is to get really wide wheels and tires and stick them as far out as possible. I would prefer wheels without a lip. Anyone with a good grasp on this please reply. Thanks!
http://www.tirerack.com/wheels/tech/...jsp?techid=101
My first question is, if the stock Tc's offset is 45mm, will a wheel of same width with a 15mm offset push the wheels out 30mm? I would prefer avoiding spacers.
My second question is, if I want wider aftermarket wheels/tires, what will offset do as width increases? If I buy 9" wide wheels, for example, does that extra width go on the inside or outside of the wheel? I also understand that dish will play a role if the wheels have a dish, or lip. That, added to whether it's a negative or positive offset wheel makes for some tough calculations.
Keep in mind, my goal is to get really wide wheels and tires and stick them as far out as possible. I would prefer wheels without a lip. Anyone with a good grasp on this please reply. Thanks!
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Joined: Apr 2005
Posts: 2,270
Use there tools to help visualize what offsets and wheel width will do to their appearance when mounted on the car.
http://www.1010tires.com/WheelOffsetCalculator.asp
http://www.rims-n-tires.com/rt_specs.jsp
Basically the lower the offset the further out the wheel will sit. Width also plays a role in the equation so it can get confusing. You wont be able to find many wheels with more than a 30 offset on a 7" wheel or 35 offset in an 8" wheel, especailly with our 5x100 bolt pattern. To get any more than that you will probably have to run spacers and they will be out well past the fenders.
http://www.1010tires.com/WheelOffsetCalculator.asp
http://www.rims-n-tires.com/rt_specs.jsp
Basically the lower the offset the further out the wheel will sit. Width also plays a role in the equation so it can get confusing. You wont be able to find many wheels with more than a 30 offset on a 7" wheel or 35 offset in an 8" wheel, especailly with our 5x100 bolt pattern. To get any more than that you will probably have to run spacers and they will be out well past the fenders.
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Joined: Jun 2005
Posts: 2,407
From: Los Angeles County 909
Re: offset, width, and dish questions
Originally Posted by Bozuzu
As far as I understand, there are three types of wheels in terms of offset. Which is for which gets a little trickier:
http://www.tirerack.com/wheels/tech/...jsp?techid=101
My first question is, if the stock Tc's offset is 45mm, will a wheel of same width with a 15mm offset push the wheels out 30mm? I would prefer avoiding spacers.
My second question is, if I want wider aftermarket wheels/tires, what will offset do as width increases? If I buy 9" wide wheels, for example, does that extra width go on the inside or outside of the wheel? I also understand that dish will play a role if the wheels have a dish, or lip. That, added to whether it's a negative or positive offset wheel makes for some tough calculations.
Keep in mind, my goal is to get really wide wheels and tires and stick them as far out as possible. I would prefer wheels without a lip. Anyone with a good grasp on this please reply. Thanks!
http://www.tirerack.com/wheels/tech/...jsp?techid=101
My first question is, if the stock Tc's offset is 45mm, will a wheel of same width with a 15mm offset push the wheels out 30mm? I would prefer avoiding spacers.
My second question is, if I want wider aftermarket wheels/tires, what will offset do as width increases? If I buy 9" wide wheels, for example, does that extra width go on the inside or outside of the wheel? I also understand that dish will play a role if the wheels have a dish, or lip. That, added to whether it's a negative or positive offset wheel makes for some tough calculations.
Keep in mind, my goal is to get really wide wheels and tires and stick them as far out as possible. I would prefer wheels without a lip. Anyone with a good grasp on this please reply. Thanks!
2. Wider wheels require higher offsets. As the wheel get wider, it protrudes outward in both directions equally (front & back). So you need a higher offset to keep the wheel inside the fender. For example, Axis makes a 9.5" wide wheel at et40. Since a 9.5" wheel sticks outward 30mm (on each side) over the stock 7" wheel, you dont need to lower the offset by much.
Its hard finding wide wheels without a lip, but some wheels come concaved (sunken center) to reduce having a wide lip.
Consider 5Zigen FNO1R-C's, which will have to be customed ordered for wide/low offset in 5x100. 240sx owners love these, especially at 18x10.
http://store1.yimg.com/I/jspec_1870_24991341
Or Axis Hiros 18x8.5 front & 18x9.5 rear
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