FC Offsett
FC Offsett
well i was looking around,and i found out that the offset for the fc is 40mm...ok,,so ya i finally found that out,and i barely understand what offset is..i know its spacing and stuff..but what do the numbers mean..and what numbers will fit the FC? 35-45 mm?
just need some general help
just need some general help
the reason no one has help is becaus eyou are in the wrong thread ..go to the official fc wheel fitment and your answer will be found or RTed will help you out he is the wheel guru on rx7club
alex
alex
Former Moderator. RIP Icemark.
Joined: Apr 2001
Posts: 25,896
Likes: 24
From: Rohnert Park CA
As far as what will fit, the tire you put on the wheel and the wheel width will have the biggest effect to what offset.
For example you can go up to about a 48-50ET offset on the front wheels if the wheel is 7in or smaller in width and the tire is a 215 or smaller size.
But the draw back is that at 48-50mm offsets the wheel is sticking inside the fender quite a bit.
So with the FCs suspension, the bigger the offset number, the closer to the suspension and inner fenders, while the smaller the number the further out away from the suspension.
Ideally the FC with a stock or near stock suspension seems to work best with a 35 or 40ET (or MM) offset and a 7 inch wide wheel. Wider wheels can be used, but usually will require some suspension tuning to get the most effect out of and to avoid wear and balance issues.
Of course using something like a 20mm offset (like some Mustang wheels) will push the wheel and tire way out, and possible hit the fenders on compression of the suspension (like bumps).
So you want to balance between too far in and hitting the suspension and too far out and looking like a choro and hitting the fenders on bumps.
There is a offset calculator in found in the FAQ for FC sticky thread at the top of this section. If you go measure your cars current distance between the tire side and closest suspension part (usually the shocks spring mount or shock itself) then you can see using the offset calculator what size tires and wheels will change. So for example if you currently have 20MM of space and you add a 1 inch wider wheel, but retain the same offset, the wheel would probably hit the suspension.
Now with the rear wheels, there is more play and you have considerably more space to play with.
For example you can go up to about a 48-50ET offset on the front wheels if the wheel is 7in or smaller in width and the tire is a 215 or smaller size.
But the draw back is that at 48-50mm offsets the wheel is sticking inside the fender quite a bit.
So with the FCs suspension, the bigger the offset number, the closer to the suspension and inner fenders, while the smaller the number the further out away from the suspension.
Ideally the FC with a stock or near stock suspension seems to work best with a 35 or 40ET (or MM) offset and a 7 inch wide wheel. Wider wheels can be used, but usually will require some suspension tuning to get the most effect out of and to avoid wear and balance issues.
Of course using something like a 20mm offset (like some Mustang wheels) will push the wheel and tire way out, and possible hit the fenders on compression of the suspension (like bumps).
So you want to balance between too far in and hitting the suspension and too far out and looking like a choro and hitting the fenders on bumps.
There is a offset calculator in found in the FAQ for FC sticky thread at the top of this section. If you go measure your cars current distance between the tire side and closest suspension part (usually the shocks spring mount or shock itself) then you can see using the offset calculator what size tires and wheels will change. So for example if you currently have 20MM of space and you add a 1 inch wider wheel, but retain the same offset, the wheel would probably hit the suspension.
Now with the rear wheels, there is more play and you have considerably more space to play with.
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watercooleman
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Mar 18, 2001 11:57 PM