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View Poll Results: 17x9 ET45/48 OR 17x9.5 ET58/60 | |||
17x9" ET45/48 | 45 | 56.96% | |
17x9.5" ET58/60 | 34 | 43.04% | |
Voters: 79. You may not vote on this poll |
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06-02-2015, 08:27 AM | #45 |
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If I wanted to fit the most tire up front WITHOUT fender modification, which wheel would I want to buy? I'll vote if you answer that!
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06-02-2015, 10:43 AM | #46 |
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A high offset 9.5" rear wheel, but seeing as you have a 128i, I would not recommend it. Too much rear wheel grip will just induce additional understeer. To be honest, with my much heavier, and much more powerful 135i, I don't feel the need for more than a 9" rear wheel in terms of lateral grip.
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06-09-2015, 03:46 PM | #48 | |
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Assuming you have coilover suspension with the perch above the tire, an aggressive track-oriented alignment (over 3 degrees camber), and rolled fenders, you can fit a 17x9 with an effective offset of 30-33mm with a race-oriented 255-40-17 street tire such as the Bridgestone RE71R. This is the most that is really possible while maintaining full range of motion. As you start subtracting from that list of preparation, what you can accomplish will go down. While I have not personally tried it, a normal 235-40-17 street tire on a 17x8.5 should be doable with a more moderate amount of camber (2+ degrees) and unrolled fenders as long as the offset is just right (ie as close as possible to the strut). Mark |
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06-09-2015, 03:55 PM | #49 | ||
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06-14-2015, 01:54 PM | #51 | |
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From Apex: "Note that a 9” wheel on the 1 series will not work up front on any car that has an aftermarket suspension installed that sets the lower spring perch next to the tire, or has a thicker diameter shock body... The spring and perch must be kept above the tire for a 9” wheel to fit up front. Stock suspension with lowering springs, and non-inverted struts with 6” main springs should sit above a wide tire and wheel package properly." Basically all of the good coilover kits for the 1er put the spring perch next to the tire (TCK DA, Ohlins R&T, etc...). You have to get crazy short springs to keep it above the tire, which then compromises a different part of your performance. So unless you want to keep your stock suspension indefinitely, you still aren't getting an ideal setup with this 9 inch wheel offering. I say stop trying to fit a square peg in a round hole, and instead get the best round peg you can find, which is a 235 or 245 front with a 255 or 265 rear on a staggered 8.5/9.5 17 inch offering with 1-series fitments so we don't need to waste money on spacers. If you want a square setup, go with 8.5 inch wheels, spacers, and 235 or 245s. My two cents...
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06-14-2015, 04:56 PM | #52 |
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I have TCK coilovers and fit a 9" wheel with a 255/40 RS3. I am not using shorter springs than the ones as supplied from TCK.
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06-14-2015, 10:50 PM | #53 | |
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06-15-2015, 01:38 PM | #54 |
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As a general note, the Ohlins M100 kit (originally designed for E9X cars) as supplied will not clear a 9" wide wheel without replacing the front springs with shorter in order to clear the tire. It's a great kit but I wish they would have done a little more homework for the E82 platform knowing that people would want to run wider front section tires. This is all solvable with the right spring (including rate) as well as proper wheel offsets but knowing this up front would have been nice.
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06-15-2015, 04:06 PM | #55 | |
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But if people know something I (and Apex) don't, I'd love to hear what people would do with square 9 inch wheels, including their suspension setup that will accommodate it and what tires and size tires they would run. I'd be entirely open to changing my mind if presented with new information.
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06-15-2015, 08:57 PM | #56 |
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06-17-2015, 05:54 PM | #57 | |
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Is that what you have done to fit the 9 inch up front? Any other mods?
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06-17-2015, 06:50 PM | #58 | |
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As stated, I am not using secret sauce parts, and I want to advance the development of the E82 as far as possible, so I am an open book. My TCK coilovers are using the TCK supplied springs, no short, custom deals, the perch is situated clearly above the tire. At 17x9 ET35, the tire will very occasionally, lightly rub the shock, just enough to smear the paint on the shock. I've hammered the car as is, no issues. I've been advised that this is not a problem. Kyle's ET33 would remedy this for those who are paranoid.
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06-17-2015, 08:11 PM | #59 | |
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There are lots of easy bolt on solutions for the front of a 1 series, they just are narrower wheels and smaller tires. If they build a 17x9 +35 it would be a perfect bolt-on wheel for the front of our cars, but completely useless for the back, it absolutely couldn't work. For me personally, I would rather buy 4x 17x9 +50 and a set of spacers for the front and have the ability to rotate wheels, instead of 2x 17x9 +35 for the front and 2x 17x9 +50 for the back but maybe I am alone on this one. Mark |
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06-17-2015, 08:31 PM | #60 | |
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06-18-2015, 02:18 PM | #61 |
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Same here, although whatever offset fits a 235/255 without modification on a aftermarket lowered suspension I would be happy with. This would be just my track set up with R comps. I ran 235/255 on 18s with ARC8s on RS3s and am very happy with the setup. So a 17" setup with that configuration on R Comps would be great.
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06-18-2015, 05:26 PM | #62 | |
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At any rate, appreciate everyone's various perspectives.
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06-19-2015, 01:34 PM | #63 | |
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Fun fact, right now, I'm running a wider wheel up front than I am in the back, with a 9" wheel up front and an 8.5" in the rear. The car had enough rear grip before, it needed more up front, so that's where I added it. Seems to be working well thus far.
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Streets of Willow: 1:27.7 CW 11/15/15; 1:29.5 CCW 8/15/15 |||| Autoclub Speedway ROVAL (CCW): 1.52.6 - 12/2/17
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09-28-2015, 08:54 PM | #64 |
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Any update? Hopefully APEX will do this!
Voted for the 17x9.5 ET58. Feel a 255 squared setup does not provide enough grip at certain tracks like Sonoma Raceway. Prefer more rubber in the rear. |
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09-30-2015, 05:14 PM | #65 |
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Also hoping for an update. Want to ditch my 245 drag radials and go with 275s.
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09-30-2015, 05:31 PM | #66 |
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Ask APEX. I have no updates to share on this one. Make sure to vote in the link in the original post to this thread.
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