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FD Extreme Tire Sizing

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Old 03-11-10, 12:33 PM
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FD Extreme Tire Sizing

First part:

I'm looking at some wide rims, 18 x 11 running 295/30/18 and 18 x 12.5 running 335/30/18.

Questions:
1. What offset would I need to clear the inside suspension? I'm running Tein SRC coilovers.
2. What size overfenders would I need to accomodate the resulting offset (from 1.1)?

Second part:

Looking at another set of rims 18 x 9.5 running 265/35/18 and 18 x 10.5 running 295/30/18.

1. What offset would I need to clear the inside suspension? I'm running Tein SRC coilovers.
2. Would that offset (from 2.1) look good given the overfender size from 1.2 or should the offset be spaced out a little more? What are the scrub radius considerations in spacing the wheel/tire out further?
Old 03-11-10, 05:29 PM
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Simple answer run the 9.5 and 10.5 setup. To run the 295/30/18 up front you will need to do a lot of work. I fit 11.5 and 12.5 and while I feel all cool about it, it is a lot of work with serious clearance issues. If I felt like pulling my wheels off and figuring it all out, I could refresh my memory on all the stuff but it wont be worth it.

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Old 03-11-10, 09:09 PM
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I feel like the first question can be solved by finding out the minimum offset that does not rub at normal camber settings, then calculating what the overfender size is so that the tire is barely covered by the fender.
Old 03-12-10, 02:31 AM
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You'll run into harness issues as well as headlight bracket(?) issues potentially if you push it too far out. I'll see what I can find out for you sometime this weekend. I had a specific look in mind for my wheels so it created it's own issues.

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Old 03-14-10, 09:11 PM
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I'm running 275/35-18s up front on 18x9.5 +45 RPF1s. I got it to a 25 3/8" ride height, without rolling the fender or pulling in the camber. I did have to remove the two screws that hold on the fender liner along the inner edge of the fender (and push the tab up after forcing the fender liner behind it).

Not sure what you'll need to run 295/35's in the rear. I would guess you'll need close to a 50mm offset to make that work; 285s might be more realistic.

Last edited by moehler; 03-14-10 at 09:12 PM. Reason: bad grammer :)
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