05-20-2014, 05:03 PM | #1 |
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Apex 1 series fitments on 2 series possible
Any idea if a set of Apex Ec7's in 1 series fitments would fit the M235i? Tires are PSS in 225F and 255R btw.
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05-20-2014, 06:20 PM | #2 | |
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We were finally able to test fit our EC-7 wheels on a M235i and have learned that you are indeed able to fit the 1-series wheels in 18x8.5" ET45 and 18x9.5" ET58 with 235/40/18 and 265/35/18 street tires. The tires we tested were the Nitto NT05, which is a bit meatier than a regular street tire, but not too extreme. We would be weary of extreme performance tires such as the Hankook RS3 or Dunlop DZII though, and would then recommend to downsize to a 255/35/18. There is some contact on the rear with the tire and the dust boot of the rear strut, which can be remedied by removing the dust boot altogether, or trimming it for the wider tires. This is the compromise that you'd have to make in order for the wheels and tires to be much wider than OEM if you are seeking to go with that wide of a tire in the rear. The fronts are very tight and does not have much clearance for anything wider, so we can't imagine fitting any wider wheel or tire up front unfortunately. The rears are also at it's limit, but at least we're able to fit a 265/35/18 which isn't too bad. Thanks again to David at Apex for the info! |
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07-06-2014, 05:48 AM | #6 |
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What's the best track setup in an 18 inch wheel? Is a square setup the way to go for track duty?
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07-11-2014, 09:55 PM | #7 | |
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Also will apex be introducing wheels specific to the 2er? |
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09-03-2014, 06:36 PM | #8 | |
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Below is a fitment test of an 18x8.5" ET45 EC-7 with a 235/40/18 Nitto NT-05 Extreme summer tire. The NT-05 runs narrow for it's overall physical size in comparison to other extreme summer tires, and especially r-compounds. In the below photos you can see the strut tube clearance at the ET45 offset. It's a very tight fit, but it was designed to keep the 235 tire inside the fender properly on 100% stock cars. Note: this tire has a bead protector, which is what's closest to the strut. Tire shapes vary, so tires without a bead protector will have more clearance, as rim to strut clearance is another 5+ millimeters. Below are some photos (at stock ride height) of M235i's running 18x8.5" ET45 with 235/40/18 NT-05 tires. You can see how much meatier and taller 235/40/18 tires run than a 245/35/18. Below are images of the recommended staggered setup of 18x8.5" ET45 and 18x9.5" ET58. Here you can see that the 9.5" ET58 allows a 265/35/18 extreme summer tire to fit cleanly in the rear. The switch from 18x8" ET52 to 18x9.5" ET58 only pushes the wheel out 13mm, but 25mm of it moves in-board. This allows a 265 (and in some cases with careful attention a 275) tire to fit, as 2/3 of the added with is moved inward. Since the 2-series was tested and used the same fitment as the 1-series fitment as shown above, these wheels are 2-series specific as well. |
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