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Discussion Starter #1 (Edited)
Hey fellow Beast Tamers

I'm looking at ordering a new set of shoes for my beast and wanted to run this by the hivemind before I pull the trigger on custom rims.

I've got a stock suspension setup that I'm quite happy with, but it's time for tires and I felt that now would be as good a time as any to get into a square setup to both allow for tire rotation and reduce understeer.

I've already converted to Vorshlag 75mm Studs, and I want to make sure what I'm ordering is going to work the best.

A traditional square setup with 4x Style65 rear wheels gives you 18"x9.5 wheel at +22mm. Given that I'm not married to OEM sizes, is this still the best size to order if I'm planning on sticking with a stock suspension setup? What size front spacers should I use for this setup? I don't care about hellaflush and have no desire to roll or tuck fenders.

Any help from you geniuses would be much appreciated!
 

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Hey fellow Beast Tamers

I'm looking at ordering a new set of shoes for my beast and wanted to run this by the hivemind before I pull the trigger on custom rims.

I've got a stock suspension setup that I'm quite happy with, but it's time for tires and I felt that now would be as good a time as any to get into a square setup to both allow for tire rotation and reduce understeer.

I've already converted to Vorshlag 75mm Studs, and I want to make sure what I'm ordering is going to work the best.

A traditional square setup with 4x Style65 rear wheels gives you 18"x9.5 wheel at +22mm. Given that I'm not married to OEM sizes, is this still the best size to order if I'm planning on sticking with a stock suspension setup? What size front spacers should I use for this setup? I don't care about hellaflush and have no desire to roll or tuck fenders.

Any help from you geniuses would be much appreciated!
3mm spacers on front should give you just enough space to clear the struts. Can still seat the wheel on the hub. 275/35-18's all around. The favorite tire around here is the Mich PSS, although there are a few other alternatives.

If you have studs and nuts, get some plastic black covers, from 5 feet away, they will look like bolts.

Regards,
Jerry
 
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You need 3mm+ spacers up front to go square. My car ran 275's square for quite some time on stock suspension, now on Dinan 1.5, no issues.
 

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If they're going to be custom might as well make them have a perfect offset (~15-19) for the front so no spacers are needed and then put small (3mm) spacers on the rear if you like, no?

You could also consider going staggered X9 up front and X10 in the back (I think with correct offsets it fits) if you're not 100% sure about the square setup. If I were to go the custom route I'd probably put 255s on a X9 and 285s on a X10

Also, got any pics of the NSX and M5 together?
 

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what's the best spacer to use up front for stock suspension M5 with stock rear 18x9.5 Style 65s with 275 Michelins? is it ok to use a 10mm or 12mm spacer since those come with a full hubcentric lip? Or will that rub with the fender?
 

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Your going to be getting close and it might depend on which tire you are running (PSS are a bit fatter than many) and what your front camber is set to. I haven't measured, but I run 3mm with PSS and I could probably just clear if I used a 10mm but might have some contact at extreme loading.
 

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interesting
 

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I also have a 2002 M5 with a completely stock suspension and just picked up a staggered set of 65's in excellent condition. I am going to use the 8" fronts for a winter square setup and the 9.5" rears for a summer set.
I also plan on doing a couple autocross's each summer and maybe a track day or two here is Colorado.
That being said, I plan on running Continental Extreme Contacts 275/35 and have been given mixed information on what size spacers to use.
Here are the suggestions owners have stated:
15mm front, 10mm rear
3mm front, 10mm rear
5mm front, 10mm rear
5mm front, nothing on rear
3mm front, nothing on rear

My 2 goals are: staying as close to stock OEM specs OR trying to widen the stance as much as possible without the potential for any wheel rub.

Which spacer setup leaves the beast with true "square" stance?

Recommendations? Thoughts?
 

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I may be one of the few who switched back to staggered setup from square. I used to have square style 65s all around with 275 tires, 3 mm spacers up front on stock suspension. Then on DINAN 1.5 suspension as well. Although it looks badass, I never track the car so rotating tires wasn't really an added bonus. I also didn't see any day-to-day steering benefit either. Factory staggered setup just "feels" better to me personally.
 
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I may be one of the few who switched back to staggered setup from square. I used to have square style 65s all around with 275 tires, 3 mm spacers up front on stock suspension. Then on DINAN 1.5 suspension as well. Although it looks badass, I never track the car so rotating tires wasn't really an added bonus. I also didn't see any day-to-day steering benefit either. Factory staggered setup just "feels" better to me personally.
Good call. Unless you really need the cross section due to weight, a wider tire will hurt scrub radius and steering feel. There is a reason 911s used a 205 front tire through the 80s and only recently went to 235s for the NA cars.
 
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Good call. Unless you really need the cross section due to weight, a wider tire will hurt scrub radius and steering feel. There is a reason 911s used a 205 front tire through the 80s and only recently went to 235s for the NA cars.
Scrub radius is a function of the wheel offset not the tire width.

Edit: OE 8" front wheel offset is 20mm, OE rear 9.5" is 22mm. Hence using a 3mm spacer on the rear wheel up front only changes the scrub radius by 1mm (i.e. it has a net offset of 19mm).
 

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My 2 goals are: staying as close to stock OEM specs OR trying to widen the stance as much as possible without the potential for any wheel rub.

Which spacer setup leaves the beast with true "square" stance?

Recommendations? Thoughts?
All you "need" is a 3mm spacer up front for OE 9.5" and 275/35s yielding a net offset of 19mm.

I would forget using 5mm spacers anywhere due to loss of hub engagement. With the 3mm, the hub still protrudes enough through the spacer to engage the wheel bore.

Depending on the tire used, you may have some minor inner fender well rubbing at full lock. You will most likely experience an increase in tramlining as the front tires wear down running the 9.5/275s up front.

I've run a square setup now for 13 years, but now that I don't drive the M5 much anymore and never use it for autox/track anymore, I'm going back to staggered soon simply for the reduction/elimination of tramlining. Of course I've been using -2.4 camber up front too, and that contributes to tramlining. I'm going to reset that to around -1.5 also.
 
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Hey fellas,

This seemed to be the most likely thread where I can hopefully get some advice.

I now have a brand new set of Style 32's in 18" x 9" form, with an offset of ET 24.

I was going to order up some 265/35/18's for these wheels as I think that would be the perfect fit. I have measured the front wheel on the car and it's incredibly close to the front strut, approximately 6-7 mm away.

Once I get tires mounted on the wheels, it will be my real test, but as of right now, the rear is a non-issue, and the front wheel fits, just barely and does spin freely. May be a different story once the 265's are on there, but I still think it would likely clear, but only by a smidge.

Going with the theories in this thread that the end result should be a net offset of 19 (how come not 20 as the OE fronts are an ET 20?) - this means I would need to use a 5mm spacer in the front minimum to get that end result of a 19mm offset. I ran some 20mm spacers awhile back on some aftermarket style 5's and they came with extended lugs and E39 center hub diameter on the spacers. Will I also need to do this for a 5mm spacer set? Or is the 5mm thin enough where the lug bolts will grab the hub and the wheel will still grab the center of the hub?

How come the desired end result is 19mm instead of 20mm for the offset like the OE wheels?

I may very well be able to get away with only 3mm spacer in front and none in the rear, but I'd like to keep the track width the same, so if I did it to the front, I'd also likely do it to the rear, even though the rear does not need it.

Thoughts?

Thanks! I will post up a pic or two here so you can see the clearance.
 

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Pics of front clearance to strut





Wheel mounted on car to test



Sent from my iPhone using Tapatalk
 

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As for the 19mm goal, thats only if you have the 9.5 stock wheels with ET22.
If you are going to run 9in around, i would run it without spacers, or I would keep the ET at 20 if possible (but a 4mm spaced doesnt exist).
Ive run a square Style 65 with 12mm spacers in the front on KW V1 for 70k miles now. My wheel is 2mm away from the strut. I have never had contact while driving, even after getting the car airborne by accident.
 

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As for the 19mm goal, thats only if you have the 9.5 stock wheels with ET22.
If you are going to run 9in around, i would run it without spacers, or I would keep the ET at 20 if possible (but a 4mm spaced doesnt exist).
Ive run a square Style 65 with 12mm spacers in the front on KW V1 for 70k miles now. My wheel is 2mm away from the strut. I have never had contact while driving, even after getting the car airborne by accident.
Hey now! That's some confidence inspiring talk right there! OK, I'm sold then, I get tires, get them mounted then test fit sans spacers. Then maybe drive around and listen a bit. If all is good, I will roll for awhile and test it out, if I hear or see anything suspicious, then I will consider spacers. I'm hoping I'll be good to go..

Here is a pic of what "willtheyfit.com" said about my front swap from OE to the Style 32's... I tried 255/35's on the left, and 265/235's on the right. Distance to strut and fender is identical on both.
 

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As alluded above, 3mm because a spacer is required to clear the struts and most coil overs with 9.5" Style 65 wheels with 275/35 tires and that thickness minimizes the change in scrub radius. I've never seen 2mm spacers that I'd want to use and until you get into 10mm or more, you deprive the wheel of proper hub engagement. Even 3mm is pushing it. 3mn is a functional and safe compromise for a specific setup.

I agree that you'll probably be okay with no spacer. Definitely don't do 5mm.
 
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