W211 AMG Discuss the W211 AMG's such as the E55 and the E63
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30 degrees out, PS2's not hooking up.

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Old 11-15-2008, 08:43 PM
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2005 S55 1982 300dt
30 degrees out, PS2's not hooking up.

So I bought some cheap lightweight winter wheels and Bridgestone RE960A/S tires and now...I don't know if it''s the light wheels (16.8lb) or the colder air, or both, but wow...does my car fly. The trick is to get it moving with as little wheel spin as possible and then hammer it. The acceleration is really snappy. At first I thought the wheels were too "tuner" and kinda ridiculous, but I'm liking them more every day. Then when I saw those pictures of the flat black SLR, I couldn't believe it. Mine are almost identical. Here are a few pics of mine and one of the SLR.

30 degrees out, PS2's not hooking up.-gedc0272.jpg

30 degrees out, PS2's not hooking up.-gedc0270.jpg

30 degrees out, PS2's not hooking up.-480321182_b5a45d56fa_b-1-.jpg
Old 11-15-2008, 10:41 PM
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CLK 63 Black Series, 2009 S550, 2011 Range Rover Supercharged, BMW F800 GS Anniv Edition
Not sure I understand - your title and post don't make much sense....But, from your title, I can only say that the PS2's are NOT meant for temps that low. They are a max performance Summer tire. 30 degree ambient temp is way too low for the PS2's to reach operating temp.
Old 11-15-2008, 11:20 PM
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2005 S55 1982 300dt
Well..here's the deal. I bought the rims right after I bought the car because coming from a CLK430 and a C55, I had learned that lightweight wheels can be a relatively inexpensive performance upgrade. When the wheels arrived at my home, I was sick and put them in the closet so to speak. I never thought I would be able to put them on my 55. They seemed so cheap and "tuner wheel" looking. Then came cold temps. The ps2's became like shrinking violets, begging to be taken off the streets. I ordered some re960's thinking I'd put them on the stock wheels. Before I could, I saw someone's post about the flat black slr and when I saw the wheels, and their resemblence to the "'things" I had stored in my closet, I couldn't believe it. I got the strength to put the Bridgestones on the Kosei's. And from that marriage came majic. I don't know about 0-60 or 1/4 mile times but I do know that driving around today I got into that sublime realm of "hyper-acceleration" when literally your breath gets taken away, when your stomach rises up in your chest, when the rear end squirms but powers on...and then you step on it even harder and yes...there's more on tap..I love these wheels and the tires will enable me to continue driving the car into the cold months ahead.
Old 11-16-2008, 02:30 AM
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Originally Posted by reitmeid
Well..here's the deal. I bought the rims right after I bought the car because coming from a CLK430 and a C55, I had learned that lightweight wheels can be a relatively inexpensive performance upgrade. When the wheels arrived at my home, I was sick and put them in the closet so to speak. I never thought I would be able to put them on my 55. They seemed so cheap and "tuner wheel" looking. Then came cold temps. The ps2's became like shrinking violets, begging to be taken off the streets. I ordered some re960's thinking I'd put them on the stock wheels. Before I could, I saw someone's post about the flat black slr and when I saw the wheels, and their resemblence to the "'things" I had stored in my closet, I couldn't believe it. I got the strength to put the Bridgestones on the Kosei's. And from that marriage came majic. I don't know about 0-60 or 1/4 mile times but I do know that driving around today I got into that sublime realm of "hyper-acceleration" when literally your breath gets taken away, when your stomach rises up in your chest, when the rear end squirms but powers on...and then you step on it even harder and yes...there's more on tap..I love these wheels and the tires will enable me to continue driving the car into the cold months ahead.
Are you certain w/those wheels weights you quoted? 16.8 lbs ea that's on par w/$10k set of CF Dynamags.... Could you please list more info on brand/sizing/website links for purchase? whls this light can equate to an EZ 30 rwhp + gain ie close to 40HP @ the crank.
Old 11-16-2008, 03:10 AM
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Average 19inch

rim weight 26-28 lbs.Even if he did find cheap 17lb rims(which like you I doubt) a net savings of 40-50 lbs unsprung weight is not equal to 40h.p. at the crank.Nor is it going to turn any car into a barn burner.Unless maybe you are lightening a go cart by 50lbs.


that is one nice looking 2005 SL600 Biturbo very nicely done

Last edited by ohlord; 11-16-2008 at 03:16 AM.
Old 11-16-2008, 05:01 AM
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Originally Posted by ohlord
rim weight 26-28 lbs.Even if he did find cheap 17lb rims(which like you I doubt) a net savings of 40-50 lbs unsprung weight is not equal to 40h.p. at the crank.Nor is it going to turn any car into a barn burner.Unless maybe you are lightening a go cart by 50lbs.


that is one nice looking 2005 SL600 Biturbo very nicely done
Thanks on the car But I was going off claims made by jrcart he has CF Dynamags, said they weigh 16 lbs ea, w/ dyno proven gains of 25-30 rwhp, I'm just guessing @ crank #'s prolly closer to 35 Crank HP if using 16lb wheels

I looked up the Kosei's the OP is using & depending on overall dia 18"-19" they weigh closer to 19 lbs ea..
Old 11-16-2008, 12:21 PM
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hey guys O.z. racing just came out with a set that ONLY weigh in at 13 or so pounds for the 17's so 18-19 should be in at around 16-17
Old 11-16-2008, 04:24 PM
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I have no idea what the OP is talking about other than his light wheels make his car fast which has nothing to do with the title and the PS2's. This thread is useless.
Old 11-16-2008, 04:42 PM
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First of all where did you find "cheap" aluminum wheels that weigh in at 16.8 pounds each? My 19" rear Dymags weigh 16 pounds a piece...I even have a set of custom made ForgeLine 17's (drag strip wheels) that weigh over just over 20 a wheel...and that pretty light for an aluminum wheel. Did you actually weigh the wheels yourself? Not to insult your inteligence but, could you be looking at kg not pounds? Most "cheep" winter wheels are one-piece cast wheels and weigh closer to 30lbs a wheel.

If you did indeed find a set of "cheap" alloys that fit and M-B and weigh 16.8 pounds, please post up more info, I'm sure others on here would be interested.

As for the HP gain, when I went from my stock wheels to the Dymags I free'd up about 25 rwhp, so if indeed your wheels weigh 16 pounds you will definetly feel the difference.
Old 11-16-2008, 04:44 PM
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Originally Posted by sick430
hey guys O.z. racing just came out with a set that ONLY weigh in at 13 or so pounds for the 17's so 18-19 should be in at around 16-17
....but I doubt they are "cheap"...even "cheap" OZ's are $400/wheel.
Old 11-16-2008, 04:50 PM
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Originally Posted by Thericker
Thanks on the car But I was going off claims made by jrcart he has CF Dynamags, said they weigh 16 lbs ea, w/ dyno proven gains of 25-30 rwhp, I'm just guessing @ crank #'s prolly closer to 35 Crank HP if using 16lb wheels

I looked up the Kosei's the OP is using & depending on overall dia 18"-19" they weigh closer to 19 lbs ea..
You are correct as I already stated my car showed a rwhp increase of just over 25 hp (have dyno sheets for any doubters). There is really no way to factor crank HP gains because all the lighter wheels are doing is freeing up HP, not actually makeing any HP. It works into the driveline loss calculation, the lighter wheels are resulting in less driveline loss. My carbon fiber driveshaft will do the same thing, netting me an additional 23-25 hp on the dyno, but not making any additonal power at the crank.

I just want to know more about these "cheap" 16 pound alloys.
Old 11-16-2008, 04:59 PM
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Sould also mention that the Dymags reduce a considerable amt of unsprung weight making braking and turn in much better. The weight reduction in rotating mass at the center of the hub where it's most important is where it really counts.
Old 11-16-2008, 06:57 PM
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2005 S55 1982 300dt
You can see the wheels at tirerack. Just look for 2003 E55, 18 inch wheels, Kosie K1 TS, 18x 8 for the front are 16.8 pounds. When I ordered mine, they also had 18x9 which I got for the rear. The 18x9 weighed in at 18 pounds.
Old 11-16-2008, 07:03 PM
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Originally Posted by jrcart
You are correct as I already stated my car showed a rwhp increase of just over 25 hp (have dyno sheets for any doubters). There is really no way to factor crank HP gains because all the lighter wheels are doing is freeing up HP, not actually makeing any HP. It works into the driveline loss calculation, the lighter wheels are resulting in less driveline loss. My carbon fiber driveshaft will do the same thing, netting me an additional 23-25 hp on the dyno, but not making any additonal power at the crank.

I just want to know more about these "cheap" 16 pound alloys.
Me too! I wouldn't mind having a 2nd set of really cheap/light wheels to thrash on
Old 11-16-2008, 07:34 PM
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2005 S55 1982 300dt
Here's a picture of the boxes they came in, 18x8 top, 18x9 lower. They're drilled with 10 holes for 2 bolt patterns (I guess that helps make them light). The cheap plastic center caps they come with fit fine in the rear, but are too short to clear the hub greasecap in the front. As you can see from my wheel pictures, I just kinda shined up the greasecap with some steel wool. **Note to self...how about a line of custom greasecaps?** For the rear, I found a set of 49mm Mercedes wheel emblems that fit the plastic caps perfectly. Found them on e-bay. The lug bolts from tirerack fit fine.
Attached Thumbnails 30 degrees out, PS2's not hooking up.-gedc0277.jpg  
Old 11-16-2008, 08:08 PM
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I just put 16.8 lb rear 18x9 Kosei rims on my E55 and the total weight went from 54lbs (19 inch Iforge daytonas + 275s PS2s) to 43 lbs (Mickey Tompsons 18 inch 265s w/ Kosei rims)....this is down from about 56 with the stockers...

So I lost 13 x 4 wheels = 52lbs
Evo Rotors (all 4) = 35 lbs
Underhood plastic parts/stripping = 5 lbs
Rear Truck cover + tools & emergency kit = 20 lbs
14 lb battery vs. 55 stock = 41 lbs
Floor mats = 5 lbs
======================
- 158 lbs (with unsprung reduction of 87 lbs). Using an angular physics calculation thats like 147 lbs of sprung weight...adding them up its like - 213 lbs. Which should be 2 tenths off the 1/4. We shall see.

Does anyone else have any weight reduction techniques other than Aitkens or south beach for the driver? My '03 didn't come with a spare.
Old 11-21-2008, 08:44 PM
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2006 E55
I have been rolling along on dry roads in 15 degree temps 70 mph, the car dropsinto 2nd and watching the traction control light flash until 3rd gear with Toyo Proxes (sticky).

Kinda fun to see the light flashing at those speeds. It makes you wonder what would happen if the ESP wasn't on...

T

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