Wheel Spacers for Our Cars
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From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
12mm for the front, and if you're running 265 tires in the back, *I* would probably go with 12mm for the rears as well, simply because the correct length bolts are readily available. If you can get 37mm or 38mm shank length bolts (check with the guy that just posted here - WORLD MOTORSPORTS I think), then a 10mm spacer in the rear may be a safer option as you may have rubbing issues with a 12mm spacer depending on the actual tires.
My track Toyo R888s are 265/35-18, but have a very square shoulder and (unshaved) are the same width as my street Michelin PSS 275/30-19s. Both of these look like they're about 10mm wider than a 275-sized Continental. It depends on the tire.
There's a C63 owner on the board here that is lowered and running 12mm front & 10mm rear spacers with the OEM 19" multi-spoke AMG C63 wheels. Will find out what his nick is & PM it to you if you want to ask him where he got his rear bolts.
Cheers,
Doug
My track Toyo R888s are 265/35-18, but have a very square shoulder and (unshaved) are the same width as my street Michelin PSS 275/30-19s. Both of these look like they're about 10mm wider than a 275-sized Continental. It depends on the tire.
There's a C63 owner on the board here that is lowered and running 12mm front & 10mm rear spacers with the OEM 19" multi-spoke AMG C63 wheels. Will find out what his nick is & PM it to you if you want to ask him where he got his rear bolts.
Cheers,
Doug
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From: Gdynia, Poland
'08 C63 Estate
I had 235/35/19 front and 275/30/19 rear Pirelli P-Zero.
Check this out:
235/40/18 = 94mm sidewall
235/35/19 = 82,25mm sidewall
18" = 450mm So 450 + 2x94 = 638mm
19" = 475mm So 475 + 2x82.25 = 639,5mm
So in this cas, it doesn't make a difference whether you are running 18" or 19".
Check this out:
235/40/18 = 94mm sidewall
235/35/19 = 82,25mm sidewall
18" = 450mm So 450 + 2x94 = 638mm
19" = 475mm So 475 + 2x82.25 = 639,5mm
So in this cas, it doesn't make a difference whether you are running 18" or 19".
MBWorld Fanatic!
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From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
I had 235/35/19 front and 275/30/19 rear Pirelli P-Zero.
Check this out:
235/40/18 = 94mm sidewall
235/35/19 = 82,25mm sidewall
18" = 450mm So 450 + 2x94 = 638mm
19" = 475mm So 475 + 2x82.25 = 639,5mm
So in this cas, it doesn't make a difference whether you are running 18" or 19".
Check this out:
235/40/18 = 94mm sidewall
235/35/19 = 82,25mm sidewall
18" = 450mm So 450 + 2x94 = 638mm
19" = 475mm So 475 + 2x82.25 = 639,5mm
So in this cas, it doesn't make a difference whether you are running 18" or 19".
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From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
roswell is running 12mm in front and 10mm in back, if memory serves. his tires are the same widths as stock, and it looks pretty flush. if you run 265's in the rear with a 10mm, i would think it would make the tire extend beyond the fender and possibly rub. i am running 265 in the rear and stock up front, so was going to get 12mm fronts and 5mm rears. this was determined by using my simple math skills, but i'm still unsure. i'd love to see how yours work out.
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From: Texas
2011 P31 C63 2015 CLA45
Didn't think 2mm difference would be so much trouble. Lastly, would I need to get an alignment after spacers? BTW I love this forum. I learn something new just about every day.
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From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
Thread Starter
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2011 P31 C63 2015 CLA45
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C63 AMG P30 *EuroCharged*| Porsche Cayenne | Buell XB9SX
Thread Starter
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From: Texas
2011 P31 C63 2015 CLA45
MBWorld Fanatic!
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From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
roswell is running 12mm in front and 10mm in back, if memory serves. his tires are the same widths as stock, and it looks pretty flush. if you run 265's in the rear with a 10mm, i would think it would make the tire extend beyond the fender and possibly rub. i am running 265 in the rear and stock up front, so was going to get 12mm fronts and 5mm rears. this was determined by using my simple math skills, but i'm still unsure. i'd love to see how yours work out.
There are no issues with using spacers if it's done right (Porsche has been using them for years in both street and race cars), but the key here is doing it RIGHT.
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C63 AMG P30 *EuroCharged*| Porsche Cayenne | Buell XB9SX
There are two issues with using 5mm spacers. The mounting flange on the hub is about 7mm deep, and the first couple of millimeters of the hub bore on most wheels is tapered, which means that you have no way of perfectly centering the wheel, which will likely result in some vibration. Furthermore, there is now no vertical (weight-bearing) contact between the car and the wheel itself, so the wheel bolts alone are now essentially supporting the entire weight of the car as well instead of simply clamping the wheel to the hub. While it may not vibrate badly if it's on the rear and/or if you just happen to get it right by the bolts alone, I personally wouldn't take the chance for the reason I stated earlier.
There are no issues with using spacers if it's done right (Porsche has been using them for years in both street and race cars), but the key here is doing it RIGHT.
There are no issues with using spacers if it's done right (Porsche has been using them for years in both street and race cars), but the key here is doing it RIGHT.
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From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
Well, I suppose you can always get 40mm bolts and get a shop to shave them down a couple of millimeters. A carbide steel saw blade should cut through them without too much difficulty. You can use a Porsche lug nut (also M14X1.5) as a guide.
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From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
If you're trying to visualize what I am talking about, have a look at http://www.superforma.co.uk/hubcentric-explained - they have some nice diagrams and a pretty good explanation of the whole concept.
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The consensus seems to be that 12mm spacers will clear fine, but I am afraid I can't offer any advice beyond that.
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From: Ottawa, Ontario, Canada
2010 C63 AMG, 2009 ISF , 2002 L-Tuned IS300, 2011 ML350
I'm the one running 12mm front (235/35/19) & 10mm rear (255/30/19) on oem 19's multispoke & H&R springs.. No rubbing at all.
The front has a bit of room, so +15mm will work with a longer bolts (27mm stock + 15mm spacers = 42mm).
The rear is flush with 255/30/19, so my guess is u will rub with 12mm spacers or 10mm spacers w/ ur 265. Just my guess though as each tires has different shape sidewalls.
I'm running 40mm longer bolts all around w/o any issue. I can't explain why though. The best length would be (27mm stock + 10mm spacers = 37mm).. But at that time, I was not able to locate some 37mm longer bolts. I ordered my bolts from Essexdistribution in Vamcouver (H&R Canadian distributors). Good luck!
The front has a bit of room, so +15mm will work with a longer bolts (27mm stock + 15mm spacers = 42mm).
The rear is flush with 255/30/19, so my guess is u will rub with 12mm spacers or 10mm spacers w/ ur 265. Just my guess though as each tires has different shape sidewalls.
I'm running 40mm longer bolts all around w/o any issue. I can't explain why though. The best length would be (27mm stock + 10mm spacers = 37mm).. But at that time, I was not able to locate some 37mm longer bolts. I ordered my bolts from Essexdistribution in Vamcouver (H&R Canadian distributors). Good luck!
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From: The Great White North
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If all else fails, you can always roll the rear fenders or give it enough negative camber at the back to clear them, which would give you an even more squat stance but will unevenly wear the inside edges of your rear tires. If they're not directional, you could easily swap the rears twice a year though and get full use out of them.
Good luck and let us know how it turns out!
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From: The Great White North
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The minimum number of turns for an M14x1.5 bolt is about 8 turns or approximately 12mm of load bearing shaft length. If you don't get longer bolts, you will only have about 7mm or roughly 4.5 turns, which is not enough to safely keep the wheels on the car. You'll need longer bolts (28mm + the thickness of the spacer), which in your case is 33mm.
If you're using your OEM Mercedes wheels (not aftermarket -- most of those use a different seat type) and these are for the front of the car, then you can go with H&R part # 1453502 bolts which are 35mm (slightly longer bolts on the front are OK, but not on the rear where they will interfere with the parking brake mechanism as the clearance is only about 2mm). Alternatively, there was a post here yesterday by someone (WORLD something or other) that sells spacers and hardened bolts and he may also have what you need.
Having said this, I wouldn't use a 5mm spacer (another post here to maximus explained why), but that's just me. I know people who do and are fine, but I also know people that did and things ended up somewhat badly for them.
-
Last edited by Diabolis; Jun 20, 2013 at 05:19 PM.
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From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
Sorry - I just saw that you wrote "with my new wheels". Are they OEM MB wheels (that use an R14 ball seat) or something else? If they're not MB wheels, then the bolt part numbers I gave you earlier do NOT apply.
