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11-04-2013, 06:51 PM | #1 |
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Space available M coupe for offset changes
In order to allow use of all the offset calculators for any size wheels (17,18,19") the original offsets are F - 8" ET 42 and R - 9" ET 30. so I would really like to know how much space actually is available inside and outside front and rear so there is no rubbing with stock suspension.
May sound weird and I suppose I could go and measure the car but I am sure someone has done it more accurately than I It would be great to know how many MM you can go in and out without rubbing - even with 10 mm clearance which is a little more than 1/4" so you can do the calculations. Thanks to Anyone
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2006 M COUPE - 380 total production, 1 of 40Imola Red produced for NA , ESS 455 Supercharger, Speedhut Gauges, VPM CLS wheels, 19" Hancooks, Stromung Exhaust, Carbon fibre accessories and black and white badging,
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11-04-2013, 07:16 PM | #2 |
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Not to sound too simplistic here but I think the easiest is to kind of say what the "max" (subjective, I know) sizing we can run is, and from there one could scale back if need be.
To help, I think most Z4M guys run 18s. Some 19s, but it's similar either way. For an 18" setup, the "near-absolute-max" size one can run in the front is 18x9.5 +35 on a 245/40 or a 255/35. This also depends on a camber setup, but that greatly increases one's ability to stuff something a little bigger (ie. a 10" wheel or a 275/35 tire) in the front fender. Expect rubbing and to have to do fender mods. The reason I say +35 is because even a 9.5" +38 wheel will contact the strut, I think. In the rear, the generally accepted "max size" would be 18x10.5 +22 on a 275/35/18. One can go bigger, but expect to have to raise the car slightly, run a stiffer rear shock/spring combo, roll the fender, camber arms, etc etc. At 10.5" wide and +22 offset, we are getting close to the inside max width as well. I don't expect an 11" +20 to fit without rubbing the inner fender liner thingy... lol. Anyone else care to chime in? |
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11-04-2013, 07:22 PM | #3 |
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Thanks
[QUOTE=nekky;14924733]Not to sound too simplistic here but I think the easiest is to kind of say what the "max" (subjective, I know) sizing we can run is, and from there one could scale back if need be.
SO if I wanted to run 8.5" in front and 10" in the rear what range would be the best offsets cause its the same for 18" or 19"?? I think F ET36 +- 5 and R ET 20+-5 ?? OR larger >?
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11-05-2013, 09:16 AM | #4 |
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This is what I am going with. Existing = OEM dimensions, New = New.
Front: http://www.willtheyfit.com/index.php...et2=38#content Rear: http://www.willtheyfit.com/index.php...et2=32#content Fronts shouldn't be a problem, But I don't know about the inner clearance in the back. Might have to go with 5 mm spacers there. Also I haven't decided if I'm going with the OEM tire height (45 and 40) or go down 5 mm (40 and 35). Last edited by Westersund; 11-05-2013 at 09:22 AM.. |
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11-05-2013, 10:44 AM | #5 | |
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Quote:
This is a 10.5" +22 on a 275/35/18 in the rear and a 9.5" +35 on a 265/35/18 in the front. The front is at approx. 3* of camber. It was drivable. |
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11-05-2013, 03:21 PM | #6 |
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Wheels
I was going with this.
Front http://www.willtheyfit.com/index.php...et2=40#content Rear http://www.willtheyfit.com/index.php...et2=25#content Fronts shouldn't be a problem, But I don't know about the inner clearance in the back. Might have to go with 5 mm spacers there. Also I haven't decided if I'm going with the OEM tire height (45 and 40) or go down 5 mm (40 and 35).[/QUOTE]
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11-05-2013, 03:25 PM | #7 | |
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My M Coupe still has OE suspension. Front tire's rim protector rubbed on the strut when going to 265 tires on 9.5 wheels.
Details and pictures captured at kklin's Z4 M Coupe for SCCA BSP (road tire). You'll have to do the math for your setup. As I noted, the tire sidewall's profile mattered in my case. Quote:
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11-05-2013, 05:16 PM | #8 |
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SIZES THEN??
SO: Looking at the CSL replicas from VMR
Front - 19x8.5 ET40 245x40 - 19" Rear 19x10 ET25 265x35 - 19" WILL these fit with no rubbing - no suspension mods -
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