C63 OEM vs Forgestar F14 Strength?
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From: New York
2005 CL55 (sold) C63 Coupe 2012 p31(sold) Audi 330awhp E55 511WHP(sold)Z06C6 550whp C63 LTH
C63 OEM vs Forgestar F14 Strength?
I’m curious to hear your experiences with F14’s in 18”, on my E55 I had flow forged rims and they cracked but that was also a heavier car and I was on 200 thread tires that were very rough and I kept running them at 30-32lbs not knowing the side effects.
I’ve been hearing mixed reviews on the validity of the statement of them being actually stronger then the 5 spoke oem wheels. Can it be said the cast vs flow formed convo is not really a true statement? Is it more so that the 5 spoke amg wheels heavy weight actually helps the longevity of the structure.
I do very well understand the pros to running F14’s but here in the north east I’m awfully concerned about structural integrity, we don’t get away with much due to potholes being extremely aggressive.
I’m very interested due to it being easily over 100lbs reduction when converting the unsprung weight over OEM Wheels . Lower E.T’s so flusher fitment but most importantly it would introduce a different tire patch to the ground(farther away) which I think we all overlook, the oem wheels would benefit the suspension geometry if it poked out more but the factory has its reasonings probably due to tire blow outs taking out the body.
I’ve been hearing mixed reviews on the validity of the statement of them being actually stronger then the 5 spoke oem wheels. Can it be said the cast vs flow formed convo is not really a true statement? Is it more so that the 5 spoke amg wheels heavy weight actually helps the longevity of the structure.
I do very well understand the pros to running F14’s but here in the north east I’m awfully concerned about structural integrity, we don’t get away with much due to potholes being extremely aggressive.
I’m very interested due to it being easily over 100lbs reduction when converting the unsprung weight over OEM Wheels . Lower E.T’s so flusher fitment but most importantly it would introduce a different tire patch to the ground(farther away) which I think we all overlook, the oem wheels would benefit the suspension geometry if it poked out more but the factory has its reasonings probably due to tire blow outs taking out the body.
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'09 C63 AMG
The OE wheels seem to bend pretty easily, so they aren't the world's strongest.
I haven't owned Forgestars, but I've had other "rotary-forged" wheels and they were tough as nails. Hopefully Forgestar is equally tough.
The tread wear rating (200) shouldnt have anything to do with the impact that the wheel is taking. It's more about the aspect ratio (sidewall height, basically). If you have a little bologna skin tire on there with a 1.5" tall sidewall, the wheel will take an almost direct impact from the street (or sometimes direct metal-on-asphalt contact) when you hit a pothole. The sidewall squishes a LOT on impact so you need to have some meat there to protect the wheel.
Also, if the tires are stretched enough that the lip of the wheel sticks out past the rubber, the lip will most likely hit the street in an impact, and it's most likely going to take some damage.
I haven't owned Forgestars, but I've had other "rotary-forged" wheels and they were tough as nails. Hopefully Forgestar is equally tough.
The tread wear rating (200) shouldnt have anything to do with the impact that the wheel is taking. It's more about the aspect ratio (sidewall height, basically). If you have a little bologna skin tire on there with a 1.5" tall sidewall, the wheel will take an almost direct impact from the street (or sometimes direct metal-on-asphalt contact) when you hit a pothole. The sidewall squishes a LOT on impact so you need to have some meat there to protect the wheel.
Also, if the tires are stretched enough that the lip of the wheel sticks out past the rubber, the lip will most likely hit the street in an impact, and it's most likely going to take some damage.
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From: Toronto
2013 C63 P31
Flow formed wheels are marginally stronger in the barrel but the centre is still cast which is why flow formed wheels tend to break at the hubs before the barrel collapses. They are generally built to be lighter and sacrifice the additional strength for lightness so depending on the wheel they could be similar. And because they arent actually forged they will crack instead of bend
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From: Melbourne, Australia
2010 C63 and 2018 GLC63s
A quick search of this forum let alone the internet will show you that the F-14 has a reputation for failure. I went C-10 because I did not want to join the statistics.
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'09 C63 AMG
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2009 C63 AMG
Agree, running Apex ARC-8 on my e46 m3 and they are fantastic for the price point. 19x10 and 19x9 at 20 lbs a piece, ridiculous. I've had them for years with zero issue.
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From: Las Vegas, NV
2014 C63 Coupe
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From: New York
2005 CL55 (sold) C63 Coupe 2012 p31(sold) Audi 330awhp E55 511WHP(sold)Z06C6 550whp C63 LTH
Seems like keeping the oem wheels is the way to go. Apex really needs to make something for MB idk why they avoiding it
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From: Texas
10 C six trizzle
hard to compete with oem wheels for anything shy of $4k a set. Keep in mind a stiff metal is more brittle it is and it's tendency to snap/crack. The benefit of softer wheels is bending a wheel vs damaging suspension components.
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From: West by god Virginia
'08 C300 4Matic Sport / '11 C63
I will say with a $4k investment it's well worth it imo. I learned after 2 sets of flow formed to just get forged and be done. Aluminum does fatigue so no matter what it's a when will it break not a if.
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From: New York
2005 CL55 (sold) C63 Coupe 2012 p31(sold) Audi 330awhp E55 511WHP(sold)Z06C6 550whp C63 LTH
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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
Stay away form Forgestars if you intend to do any performance driving. They are fine for street use as an aesthetic "upgrade" but not much else.
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'12 C63BS "SlickTop", '08 CLK63BS, '16 E63S wagon, '12 CLS63, amongst other non-Merc toys
as in, you must see it on another c63 so you can be a sheep to follow? or as in, you just wanted to see the availability of 5x112?
https://autotalent.com/products/tita...s-benz-c-class
listed for w205, but seeing on folks retro-fit w205c63s oem wheels onto w204c63, i don't see how these wouldn't fit on w204c63..
oem size/offset:
19x8 = +45mm Front
19x9 = +54mm Rear
link shows 19x8.5 +44mm, and I'm sure there are other sizing available with 5x112 bolt pattern, just reach out to any of the stockist/reseller of Titan7
here's another link, same width/offset/bolt-pattern but in 18's:
https://www.evasivemotorsports.com/s...atin-titanium/
https://autotalent.com/products/tita...s-benz-c-class
listed for w205, but seeing on folks retro-fit w205c63s oem wheels onto w204c63, i don't see how these wouldn't fit on w204c63..
oem size/offset:
19x8 = +45mm Front
19x9 = +54mm Rear
link shows 19x8.5 +44mm, and I'm sure there are other sizing available with 5x112 bolt pattern, just reach out to any of the stockist/reseller of Titan7
here's another link, same width/offset/bolt-pattern but in 18's:
https://www.evasivemotorsports.com/s...atin-titanium/
Last edited by 1JDM911; Sep 23, 2022 at 06:11 PM.
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From: USA
CL63 AMG
I’d like to interject … I ran 20x11 square CF5s on my ML63 which is a 5300lb tank of an SUV and I tracked the living **** out of that car (so much so eventually the motor gave out). The wheels were absolutely indestructible, granted it has 5 massively strong spokes but it was a bulletproof wheel. Thin spokes are the issue not whether OEM or not.
ask forgestar and they will tell you which wheel is best for your application based on load rating. If you use a thin spoke wheel on a heavy car that exceeds its load rating for track purposes then inevitably you can exceed what it was designed for.
correct, Forgestar has flow formed BARRELS nor centers so you do need to keep that in mind. Had them on many of my AMGs and two of my Aston’s (CF10s) and they were all fantastic and no issues. Forgestar did say CF10s are much stronger than F14s and they are lighter so I went with them at end of the day
ask forgestar and they will tell you which wheel is best for your application based on load rating. If you use a thin spoke wheel on a heavy car that exceeds its load rating for track purposes then inevitably you can exceed what it was designed for.
correct, Forgestar has flow formed BARRELS nor centers so you do need to keep that in mind. Had them on many of my AMGs and two of my Aston’s (CF10s) and they were all fantastic and no issues. Forgestar did say CF10s are much stronger than F14s and they are lighter so I went with them at end of the day
