Ze40 wheel help

8600RPM · 11-29-2016, 01:58 AM

I've decided to get ze40s or advan rs but prefer ze.

This is for my e92 which I track a ton and want staggered. Problem is finding r comps which are the appropriate size to fit they ze40s as they recommend 19 inch 9.5 frontage 10.5 rear. The tires I like don't Coe in sizes that fit this.

I also don't want to trade off and have super heavy tires that are wide as I don't feel I need more than the 245/275 on oem zcp I have now.

So I found out they make a 8.5 inch with offset of 36. Oem 19s (non zcp) are 8.5 with 29 offset.

Now would that fit fine if I just add a 7mm spacer? Also would a 7mm spacer or 10mm spacer be bad for the track or other handling character? If I coukd use 8.5 front and9.5 rear I would be able to use the r comps I like in a 245/265

///Mobbin · 11-29-2016, 10:50 AM

If this is purely a track wheel set I would give some serious thought to getting Apex wheels or the new Bimmerworld forged offering. Really need to see track wheels as a potentially consumable item (though hopefully not too often). If you also want to run them on the street, I totally understand getting something nicer.

Then I would also think about going square. I bought a staggered wheel set 18x10 et25 fronts 18x10.5 et27 rears and really wish I went square now. With a heavy car like ours it is much easier to maximize tire life with wheel rotations and square makes that a lot easier. I am actually running square RE-71R's on my staggered set now and plan to do tire off rotations between track weekends, I'm that desperate to increase tire life. Hopeful to get 6 or maybe 8 track days out of this set, we'll see.

Another good thing about having a purely square set is that you can buy just one extra wheel and tire to bring to the track with you and have a spare on hand.

M3 Number 86 · 12-01-2016, 10:17 AM

Get 18s.

SYT_Shadow · 12-01-2016, 12:49 PM

A square set in Apex or the BW forged wheels seems like the best bet to me

You really want 275 up front, the car feels wonderful at the track with a square setup. Maybe wider in the rear, but definitely not at the expense of narrower on the front

11-29-2016, 01:58 AM	#1
8600RPM Lieutenant Colonel 657 Rep 1,749 Posts Drives: e92 m3 Join Date: Oct 2014 Location: AZ iTrader: (0)	Ze40 wheel help I've decided to get ze40s or advan rs but prefer ze. This is for my e92 which I track a ton and want staggered. Problem is finding r comps which are the appropriate size to fit they ze40s as they recommend 19 inch 9.5 frontage 10.5 rear. The tires I like don't Coe in sizes that fit this. I also don't want to trade off and have super heavy tires that are wide as I don't feel I need more than the 245/275 on oem zcp I have now. So I found out they make a 8.5 inch with offset of 36. Oem 19s (non zcp) are 8.5 with 29 offset. Now would that fit fine if I just add a 7mm spacer? Also would a 7mm spacer or 10mm spacer be bad for the track or other handling character? If I coukd use 8.5 front and9.5 rear I would be able to use the r comps I like in a 245/265
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11-29-2016, 10:50 AM	#2
///Mobbin Colonel 1478 Rep 2,672 Posts Drives: m3 Join Date: Jul 2011 Location: Houston iTrader: (3)	If this is purely a track wheel set I would give some serious thought to getting Apex wheels or the new Bimmerworld forged offering. Really need to see track wheels as a potentially consumable item (though hopefully not too often). If you also want to run them on the street, I totally understand getting something nicer. Then I would also think about going square. I bought a staggered wheel set 18x10 et25 fronts 18x10.5 et27 rears and really wish I went square now. With a heavy car like ours it is much easier to maximize tire life with wheel rotations and square makes that a lot easier. I am actually running square RE-71R's on my staggered set now and plan to do tire off rotations between track weekends, I'm that desperate to increase tire life. Hopeful to get 6 or maybe 8 track days out of this set, we'll see. Another good thing about having a purely square set is that you can buy just one extra wheel and tire to bring to the track with you and have a spare on hand. __________________ 2021 Alfa Romeo Stelvio Quadrifoglio \| 2.9L \| Trofeo White Tri-Coat \| 8-spd
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12-01-2016, 10:17 AM	#3
M3 Number 86 Major General 3221 Rep 6,218 Posts Drives: black m3 Join Date: Mar 2015 Location: pasadena iTrader: (1)	Get 18s. __________________ dadmobile IG: @M3number86 youtube: track vids
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12-01-2016, 12:49 PM	#4
SYT_Shadow ///M Powered for Life 11489 Rep 10,329 Posts Drives: E90M/E92M/M4GTS/M4GT4/X5M Join Date: Sep 2010 Location: Greenwich, CT iTrader: (2)	A square set in Apex or the BW forged wheels seems like the best bet to me You really want 275 up front, the car feels wonderful at the track with a square setup. Maybe wider in the rear, but definitely not at the expense of narrower on the front
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