[3002 tii]

Can anyone confirm what's the max offset (yes max) you need on a 17x8 to clear the calipers on the N55? Looking at winter wheel options and I plan to run a factory set of Style 112's, originally on the E83, which is 17x8 et46.

The factory 308's that came standard on my F25 are 18x8 et43 so I've lost 3mm clearance. I'm hoping a 5mm spacer will be more than sufficient, factoring both the 3mm differential and difference in spoke clearance.

[Lotus99]

X3 F25 = PCD 5x120, centre bore 72.5mm and M14x1.25 bolt thread. ET 32-51

I'm quoting the info from this link:

http://www.bmwforums.info/bmw-wheels...olt-sizes.html

My own car's specs are:

OEM: 245/45/19 98Y (mine) Style 369 8.5 x 19 ET 38 Diameter: 703.1mm

[3002 tii]

Originally Posted by Lotus99

X3 F25 = PCD 5x120, centre bore 72.5mm and M14x1.25 bolt thread. ET 32-51

I'm quoting the info from this link:

http://www.bmwforums.info/bmw-wheels...olt-sizes.html

My own car's specs are:

OEM: 245/45/19 98Y (mine) Style 369 8.5 x 19 ET 38 Diameter: 703.1mm

32 to 51 is a huge range (higher offset probably closer to 7.5" with lower offsets closer to 9") but I need something more specific. Appreciate the help though. I'm basically hoping a 8" with 41" offset will do the trick.

[Lotus99]

Have you tried www.willtheyfit.com to punch in the existing and new specs? It will show you a mockup of the new wheel vs. suspension components and stuff.

[3002 tii]

Originally Posted by Lotus99

Have you tried www.willtheyfit.com to punch in the existing and new specs? It will show you a mockup of the new wheel vs. suspension components and stuff.

I can do the math myself. And given same width, it's just simple as 46-43=3mm closer inboard. With a 5mm spacer I gain 2mm additional clearance (-3+5=+2mm).

It's just that it's so close even something as spoke design would offset the "numbers". What this site doesn't do is address caliper clearance.

[Ranger 6]

The only thing I can help with is that style 148 (17 - 8 ET46) doesn't fit. The spokes are the wrong shape to clear the calipers.

However, I do have style 130 (17 - 7.5 ET48) do fit.

UK spec 35d.

[3002 tii]

Originally Posted by Ranger 6

The only thing I can help with is that style 148 (17 - 8 ET46) doesn't fit. The spokes are the wrong shape to clear the calipers.

However, I do have style 130 (17 - 7.5 ET48) do fit.

UK spec 35d.

Thanks this is helpful. Do you know how thick of a spacer you would need to get the 148's to fit?

[Ranger 6]

My guess is it wouldn't be much.

I've sold the wheels now so can't check I'm afraid.

[3002 tii]

I did a test fit and the 5mm isn't enough. It's enough for the spokes to clear the caliper but the inner barrel itself still touches the top side of the caliper. I might just play if safe and use a 15mm.