RENNTECH C74 mod for my 2010 C63 AMG
09-28-2011, 10:00 PM
#51
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C63 AMG modified to RENNTECH C74
Thank you! I too am very pleased with the result, and I will keep improving on it until it's perfect. The frontend appearance is still a bit "soft", and I hope my new CF hood will fix that 
Next big project will be 100%-locking LSD from RENNTECH -- definitely need to get it done before winter hits here.
Next big project will be 100%-locking LSD from RENNTECH -- definitely need to get it done before winter hits here.
09-29-2011, 06:49 AM
#53
Thank you! I too am very pleased with the result, and I will keep improving on it until it's perfect. The frontend appearance is still a bit "soft", and I hope my new CF hood will fix that Next big project will be 100%-locking LSD from RENNTECH -- definitely need to get it done before winter hits here.
Next big project will be 100%-locking LSD from RENNTECH -- definitely need to get it done before winter hits here.
09-29-2011, 11:00 AM
#54
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C63 AMG modified to RENNTECH C74
I will update the post once I get it installed!
09-30-2011, 06:52 AM
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C63 AMG modified to RENNTECH C74
What do you suggest...
Guys, I need some advice. While the black CF wheels on my C74 look quite nice by themselves I still wish I got shinier metallic wheels instead. Of course given the amount I spent on these wheels there is no turning back in the near future, LOL. Thus I'm trying everything else to fix the visual inconsistences.
I already affixed black rubbers around the door frames to make it more consistent with the black wheels. The next thing I will do is to paint the brakes -- make them black with red letterings.
Aside from the above procedures, I'm out of ideas. Please, if you have suggestions, I'd love to hear them! Thanks in advance!
I already affixed black rubbers around the door frames to make it more consistent with the black wheels. The next thing I will do is to paint the brakes -- make them black with red letterings.
Aside from the above procedures, I'm out of ideas. Please, if you have suggestions, I'd love to hear them! Thanks in advance!
09-30-2011, 07:45 AM
#56
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2010 C63, 2007 X5
hmm... I think you should paint your brake caliper red to match your rims or another bright color to make it stand out. Don't think black will look good. I did a search and found some nice colors:
https://mbworld.org/forums/w211-amg/...-calipers.html
https://mbworld.org/forums/c63-amg-w...-calipers.html
https://mbworld.org/forums/c63-amg-w...ns-needed.html
https://mbworld.org/forums/w211-amg/...-calipers.html
https://mbworld.org/forums/c63-amg-w...-calipers.html
https://mbworld.org/forums/c63-amg-w...ns-needed.html
09-30-2011, 11:52 AM
#57
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C63 AMG modified to RENNTECH C74
hmm... I think you should paint your brake caliper red to match your rims or another bright color to make it stand out. Don't think black will look good. I did a search and found some nice colors:
https://mbworld.org/forums/w211-amg/...-calipers.html
https://mbworld.org/forums/c63-amg-w...-calipers.html
https://mbworld.org/forums/c63-amg-w...ns-needed.html
https://mbworld.org/forums/w211-amg/...-calipers.html
https://mbworld.org/forums/c63-amg-w...-calipers.html
https://mbworld.org/forums/c63-amg-w...ns-needed.html
11-21-2011, 01:26 PM
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C63 AMG modified to RENNTECH C74
I just recently installed a new Siebon Carbon Fiber hood and the RENNTECH 100% Locking LSD. Here are some photos I snapped during the mod. Final result looks even better, but I haven't had the time to photograph it.
11-21-2011, 10:37 PM
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C63 AMG modified to RENNTECH C74
You definitely need a drop
11-21-2011, 10:54 PM
#63
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C63 AMG modified to RENNTECH C74
Thank you! On the finished project, I also:
- Painted the hood, front lip (carbon fiber too reflective to be visible outdoors)
- Removed the red strip on the wheels so it's all-black
- Painted the break red
- Installed illuminated Brabus shifter
I will post more photos when I have them.
- Painted the hood, front lip (carbon fiber too reflective to be visible outdoors)
- Removed the red strip on the wheels so it's all-black
- Painted the break red
- Installed illuminated Brabus shifter
I will post more photos when I have them.
from the classic Coming to America.
11-23-2011, 11:25 PM
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C63 AMG modified to RENNTECH C74
11-23-2011, 11:32 PM
#69
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Your car is pure sex... loving it!! I agree with olszowa on the drop... a slight 1inch drop would not hurt. 
11-24-2011, 11:47 PM
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C63 AMG modified to RENNTECH C74
11-24-2011, 11:49 PM
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C63 AMG modified to RENNTECH C74
11-25-2011, 12:02 AM
#72
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I feel you bro... lol! It took me a year to pull the trigger on my H&R drop... I was in the same boat as you cuz I live in Canada where roads are not the best, but I'm happy with the result although I have to drive more carefully to avoid scraping my front lip & Revozport CF ground effect. (only scraped twice this year, so no big deal)
03-23-2014, 08:42 PM
#74
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question on fenders
I love my 2010 C63 AMG, and when I first got it I thought it was the perfect car for me. After a year and 13,000 kilometers passed, I've noticed a few issues:
- Lack of traction! The stock 255/35/18 Continental tires just cannot cope with the enormous torques. The matter becomes even worse in winter time as the tires lose even more tractions! I find it surprising that AMG overlooked such a major deficiency. Even my 2010 Porsche Cayman has bigger tires!
- At higher than usual speed the car does not feel very sure-footed -- certainly not as stable as the Cayman.
- Not easily distinguishable from the regular C-class.
While searching for a solution, I stumbled upon RENNTECH’s web site and noticed their C74 package. By increasing the rear track width to 74 inches, they are able to fit 315 series tires. The aero package also claims to improve the aero dynamics of the car, thus increasing its stability at high speeds. Of course, they also offer a whole wide range of engine mods to output a whopping 600+ HPs!
I decided to go with the full aero package, but without the power modification. 600+ HPs are just not necessary for my purpose. In the end I settled with the following configuration:
- Full RENNTECH C74 Aero Package
- 19” Mesh-8 Carbon Fiber wheels from 360 FORGED
- Front 245/35/19 and Rear 305/30/19 Michelin PS2 tires
- Techtec ECU modification to 540+ HPs
The original C74 is equipped with 20” rear wheels and 305/25/20 tires. I chose not to go this extreme because the road condition where I live is not so optimal. Besides, I feel the handling characteristic of my C63 is already good enough, but ride quality is not something I want to sacrifice.
I wanted to get the RENNTECH ECU but they require me to ship the original ECU to them so I didn’t go through the trouble and got the Techtec instead. A simple upgrade gives me 90 more horsepower so that’s pretty good… actually, more than good enough.
When the pieces came they were unpainted carbon fiber. Very high quality and beautiful. However, in the end we decided to paint the fenders as well as the rear wing to match the car’s color. The carbon fiber pieces are so reflective under the sun it becomes nearly invisible so visually you cannot see the added bulk of the car. After they were painted the effect is much nicer. To match the black wheels I also tapered the chrome around the doors.
After the mod we really have a head turner! The car draws a LOT of attention! Of course it also feels much more sure-footed and the additional power gain is quite noticeable even in low speed driving. Interestingly the growl of the car also seems a bit louder. I don’t think it’s due to the ECU upgrade, perhaps the new exhaust tips are producing some echoing effects.
As they say once you start modify your car you can’t stop, I find it to be true! I’m going to paint the brake, and ordered a new carbon fiber hood with vents. Once I got them installed I will post more pictures!
For more and higher resolution photos, please check out http://www.flickr.com/photos/cosmici...7627711756700/
- Lack of traction! The stock 255/35/18 Continental tires just cannot cope with the enormous torques. The matter becomes even worse in winter time as the tires lose even more tractions! I find it surprising that AMG overlooked such a major deficiency. Even my 2010 Porsche Cayman has bigger tires!
- At higher than usual speed the car does not feel very sure-footed -- certainly not as stable as the Cayman.
- Not easily distinguishable from the regular C-class.
While searching for a solution, I stumbled upon RENNTECH’s web site and noticed their C74 package. By increasing the rear track width to 74 inches, they are able to fit 315 series tires. The aero package also claims to improve the aero dynamics of the car, thus increasing its stability at high speeds. Of course, they also offer a whole wide range of engine mods to output a whopping 600+ HPs!
I decided to go with the full aero package, but without the power modification. 600+ HPs are just not necessary for my purpose. In the end I settled with the following configuration:
- Full RENNTECH C74 Aero Package
- 19” Mesh-8 Carbon Fiber wheels from 360 FORGED
- Front 245/35/19 and Rear 305/30/19 Michelin PS2 tires
- Techtec ECU modification to 540+ HPs
The original C74 is equipped with 20” rear wheels and 305/25/20 tires. I chose not to go this extreme because the road condition where I live is not so optimal. Besides, I feel the handling characteristic of my C63 is already good enough, but ride quality is not something I want to sacrifice.
I wanted to get the RENNTECH ECU but they require me to ship the original ECU to them so I didn’t go through the trouble and got the Techtec instead. A simple upgrade gives me 90 more horsepower so that’s pretty good… actually, more than good enough.
When the pieces came they were unpainted carbon fiber. Very high quality and beautiful. However, in the end we decided to paint the fenders as well as the rear wing to match the car’s color. The carbon fiber pieces are so reflective under the sun it becomes nearly invisible so visually you cannot see the added bulk of the car. After they were painted the effect is much nicer. To match the black wheels I also tapered the chrome around the doors.
After the mod we really have a head turner! The car draws a LOT of attention! Of course it also feels much more sure-footed and the additional power gain is quite noticeable even in low speed driving. Interestingly the growl of the car also seems a bit louder. I don’t think it’s due to the ECU upgrade, perhaps the new exhaust tips are producing some echoing effects.
As they say once you start modify your car you can’t stop, I find it to be true! I’m going to paint the brake, and ordered a new carbon fiber hood with vents. Once I got them installed I will post more pictures!
For more and higher resolution photos, please check out http://www.flickr.com/photos/cosmici...7627711756700/
where did you purchase the carbon fiber fenders?
