R171 P30 Package Wheels are HEAVY - Mercedes Benz SLK Forum

Tires, Wheels, Brakes & Suspension Discussion and information regarding tires, wheels, brakes and suspension.

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#1 Old 07-22-2014
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R171 P30 Package Wheels are HEAVY

I'm moving from Hawaii to the east coast, so, after this past autocross season, I swapped my Dunlop Direzza Z2 street tires to my lightweight Enkei race wheels for every day use. I had racing slicks mounted on the Enkeis previously. I wanted to run the the Enkeis on the street so I could mount a set of winter/snow tires on the AMG P30 Package wheels.

After cleaning my AMG wheels for shipping, I decided to weigh them before packing them up. They are HEAVY! So much for "two piece lightweight alloy wheels" as part of the option package.

Fronts: 28.8lbs
Rears: 32.8lbs

As a comparison, my Enkei PF01 wheels are half an inch wider front and rear:
Fronts: 19.2lbs
Rears: 20.1lbs


Front wheel:


Rear wheel:


Here's a shot of the Enkei's

Sold: '07 SLK280 | 18" TSW Bremmas | Toyo T1-R 225F/245R | SmartTop V.3 | Green Filters
Sold: '07 SLK55 AMG | 030 Package | Custom X-Pipe | Secondary Cat Delete | SmartTop V3.33 | Mod R170 Antenna | BC Racing Coilovers | Racingbrake Two-Piece Rotors | Enkei Pf-01, Michelin Super Sport 245F/275R

Current: '15 Alfa Romeo 4C | Black on Red | Track Package

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#2 Old 07-22-2014
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Can you post the pn for them (Enkei) please?


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#3 Old 07-22-2014
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That weight range seems normal to me for OEM wheels, but I agree they shouldn't be called 'lightweight'.

Good luck with the move.

Dan


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2006 SLK280

Engine: 272.942 V6
Options: Iridium Silver Paint, Harmon Kardon Sound System, Heated Seats, Air Scarf, Vavona Wood Trim
Modifications: 18" AMG wheels, Brembo Sport Pack Front Rotors and Calipers, 290 mm Rear Rotors and Calipers, SmartTop, Akebono Ceramic Brake Pads, Mid-Size R171 Facelift Antenna, Clear Sidemarkers, Chrome Turn Signal Bulbs, Mercedes Star Valve Stem Caps, Custom Cabin Air Intake Screen, AMG Tinted Tail Lights and 3rd Brake Light, Xenon Low Beams, OEM Sport Air Cleaner with Custom Port Screens, LED License Plate Lights, LED Parking Lights, Lamin-X Fog Light Films
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#4 Old 07-22-2014
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Quote:
Originally Posted by Der Flieger View Post
Can you post the pn for them (Enkei) please?
Here it is on tire rack (or just search for SLK wheels on TireRack and you'll see them)
http://www.tirerack.com/wheels/Wheel...ll&sort=Weight

18x8 ET35
18x9 ET35

Sold: '07 SLK280 | 18" TSW Bremmas | Toyo T1-R 225F/245R | SmartTop V.3 | Green Filters
Sold: '07 SLK55 AMG | 030 Package | Custom X-Pipe | Secondary Cat Delete | SmartTop V3.33 | Mod R170 Antenna | BC Racing Coilovers | Racingbrake Two-Piece Rotors | Enkei Pf-01, Michelin Super Sport 245F/275R

Current: '15 Alfa Romeo 4C | Black on Red | Track Package
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#5 Old 08-01-2014
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Thanks for posting the weights. This just convinced me to start shopping for wheels. In my opinion, those weights are pretty ridiculous. It must feel like a whole different car with the PF01s!
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#6 Old 08-01-2014
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Quote:
Originally Posted by MarkR171 View Post
After cleaning my AMG wheels for shipping, I decided to weigh them before packing them up. They are HEAVY! So much for "two piece lightweight alloy wheels" as part of the option package.

Fronts: 28.8lbs
Rears: 32.8lbs
Thanks for posting the actual weight of the wheels without the tires. The 19" replicas of these wheels seem like a better buy.

19x8.5 fronts: 28.0lbs
19x9.5 rears: 30.0lbs


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#7 Old 08-02-2014
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19" and low road maintenance is a bad combination. I would stick with 18".
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#8 Old 08-02-2014
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I can confirm the 030 weights. I was shocked. The AMG 16 spoke rears are 5 pounds lighter.

I track the Forgestar F14 in "Blood Red" color.

Fronts are 1 1/2" wider
Rears are 1" wider

Fronts are 17.3 pounds
Rears are 19 pounds

Mark,
Where on the east coast are you moving to?
Maybe we can hook-up for some road courses.
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#9 Old 08-03-2014
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Quote:
Originally Posted by JudgeMing View Post
19" and low road maintenance is a bad combination. I would stick with 18".
If the Black Series owners can handle it, I'm sure I can too. It's nothing new to me.



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Last edited by dbgrn; 05-10-2018 at 02:04 PM.
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#10 Old 08-26-2014
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Quote:
Originally Posted by Elbert55 View Post
I can confirm the 030 weights. I was shocked. The AMG 16 spoke rears are 5 pounds lighter.

I track the Forgestar F14 in "Blood Red" color.

Fronts are 1 1/2" wider
Rears are 1" wider

Fronts are 17.3 pounds
Rears are 19 pounds

Mark,
Where on the east coast are you moving to?
Maybe we can hook-up for some road courses.
Sorry I've been busy since the move. I'm in Montgomery County, Maryland.

Sold: '07 SLK280 | 18" TSW Bremmas | Toyo T1-R 225F/245R | SmartTop V.3 | Green Filters
Sold: '07 SLK55 AMG | 030 Package | Custom X-Pipe | Secondary Cat Delete | SmartTop V3.33 | Mod R170 Antenna | BC Racing Coilovers | Racingbrake Two-Piece Rotors | Enkei Pf-01, Michelin Super Sport 245F/275R

Current: '15 Alfa Romeo 4C | Black on Red | Track Package
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#11 Old 09-20-2014
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my original 16 spokes 18" AMG wheels were
Front: 18x7.5 = 24 lbs
Rear: 18x8.5 = 26 lbs

I will be getting different wheels sometime in the near future.
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#12 Old 03-18-2015
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Quote:
Originally Posted by MarkR171 View Post
I'm moving from Hawaii to the east coast, so, after this past autocross season, I swapped my Dunlop Direzza Z2 street tires to my lightweight Enkei race wheels for every day use. I had racing slicks mounted on the Enkeis previously. I wanted to run the the Enkeis on the street so I could mount a set of winter/snow tires on the AMG P30 Package wheels.

After cleaning my AMG wheels for shipping, I decided to weigh them before packing them up. They are HEAVY! So much for "two piece lightweight alloy wheels" as part of the option package.

Fronts: 28.8lbs
Rears: 32.8lbs

As a comparison, my Enkei PF01 wheels are half an inch wider front and rear:
Fronts: 19.2lbs
Rears: 20.1lbs


Front wheel:


Rear wheel:


Here's a shot of the Enkei's
I've always found that the best performance mod one can make on a car is to use the lightest wheels possible. That seems even more so with these Mercedes given how heavy the stock rims are. I'm surprised not to find more posts by members who've switched to lighter rims (Enkei and OZ seem to be the only alternatives listed by Tire Rack). From your experience is there any reason (other than cost) NOT to switch?

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#13 Old 03-19-2015
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Quote:
Originally Posted by LeftyS7 View Post
I've always found that the best performance mod one can make on a car is to use the lightest wheels possible. That seems even more so with these Mercedes given how heavy the stock rims are. I'm surprised not to find more posts by members who've switched to lighter rims (Enkei and OZ seem to be the only alternatives listed by Tire Rack). From your experience is there any reason (other than cost) NOT to switch?
No, not really. The only reason might be structural strength; M-B wheels are heavy but also very stout. Unless they're forged, lighter wheels might not be quite as strong. But is that really worth worrying about? Probably not, given the benefits of reduced unsprung weight. If you live in an area with particularly aggressive potholes, or your local track has some nasty curbs that typically get driven on with a street car on the correct line, then lighter and possibly weaker wheels might be cause for concern. But those two situations are the only ones I can think of where this might be worrisome; in everyday driving on relatively smooth roads I see no downside to going lighter.
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#14 Old 03-19-2015
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BBS makes three very nice wheels for the 55 (feed in the specs):

BBS Application Guide | BBS USA

As I remember, the 18" wheels weigh around 25#s and the 19" 28#s. However, they cost around $500 each!
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