<>Offset Help!<>
Honda-Tech Member
Joined: Jan 2008
Posts: 1,747
Likes: 3
From: the garage, socal
Re: <>Offset Help!<>
Those wheels you linked to and the wheels in the picture you posted are pretty different.. which are you getting? I don't think the wheels in the picture are too hot, especially because they look huge on that hatchback.
Honda-Tech Member
Joined: Nov 2005
Posts: 12,681
Likes: 1
From: I.E.
Re: <>Offset Help!<>
Offset is the distance from the center line of the wheel (in an 8 inch wheel, it's 4 inches) to the back of the mounting hub
The lower the number in offset, the closer the wheel moves toward the fender and away from the shock tower.
Another term synonymous with offset is backspacing. Backspacing is the distance from the rear of the hub to the end of the wheel toward the shock tower; most easily measured by laying your wheel face down, putting a straight edge accross the wheel and measuring from the hub out to the straight edge.
here's a link for more info on that
http://www.tirerack.com/wheels/tech/...jsp?techid=101
and here's a backspacing to offset chart
Offset is measured in millimeters
1 inch = 25.4mm
When you go +1 inch in width from your current setup 12.7mm is added equally to both sides of the wheel from the hub, so a 15x8 +30 will stick out 12.7mm more than a 15x7 +30.
Here's a basic offset calculator
http://www.1010tires.com/WheelOffsetCalculator.asp
Here's a more in depth one that I prefer to use (note: you can't stretch tires)
http://www.rims-n-tires.com/rt_specs.jsp
The lower the number in offset, the closer the wheel moves toward the fender and away from the shock tower.
Another term synonymous with offset is backspacing. Backspacing is the distance from the rear of the hub to the end of the wheel toward the shock tower; most easily measured by laying your wheel face down, putting a straight edge accross the wheel and measuring from the hub out to the straight edge.
here's a link for more info on that
http://www.tirerack.com/wheels/tech/...jsp?techid=101
and here's a backspacing to offset chart
Offset is measured in millimeters
1 inch = 25.4mm
When you go +1 inch in width from your current setup 12.7mm is added equally to both sides of the wheel from the hub, so a 15x8 +30 will stick out 12.7mm more than a 15x7 +30.
Here's a basic offset calculator
http://www.1010tires.com/WheelOffsetCalculator.asp
Here's a more in depth one that I prefer to use (note: you can't stretch tires)
http://www.rims-n-tires.com/rt_specs.jsp
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