LSDs and drag racing opinions...
Thread Starter
Super Member
Joined: Mar 2003
Posts: 869
Likes: 35
From: Pacific NW
AMG GT-R
LSDs and drag racing opinions...
Sorry to bring this up again as I know it's been debated in the past, but I'm still very confused as to whether or not a Quaife LSD will help with my launches, and improve my overall 1/4 times. I've read that some did not notice any improvement in their 60' times after installing one, however I don't know if these people were already cutting good 60's prior (ie. under 2 sec). Whereas for someone like me, who is only managing 2.3s 60's on street tires, perhaps I would see some improvements?
Just trying to think about it logically, but I would think a LSD would help for sure. Maybe I'm not understanding it right, but if you get both wheels to spin instead of one, then you essentially double your contact patch?
Again, I can see if someone is able to cut really good 60' times like 1.8s on street tires, then already there is little room to improve and therefore any benefits of a LSD in straight line would be greatly diminished. And I would think to achieve those kind of 60' you would be right at the threshold of spinning your tires, but not, and therefore negating the need for an LSD. But for everyone else who isn't able to quite master that fine touch of not spinning at the start???
Just trying to think about it logically, but I would think a LSD would help for sure. Maybe I'm not understanding it right, but if you get both wheels to spin instead of one, then you essentially double your contact patch?
Again, I can see if someone is able to cut really good 60' times like 1.8s on street tires, then already there is little room to improve and therefore any benefits of a LSD in straight line would be greatly diminished. And I would think to achieve those kind of 60' you would be right at the threshold of spinning your tires, but not, and therefore negating the need for an LSD. But for everyone else who isn't able to quite master that fine touch of not spinning at the start???
MBWorld Fanatic!
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
i can tell you that Hooleyboy cuts 1.6xx 60's in his 480whp (dynodynamics) C55 without a mechanical LSD. he said the best thing was putting certain fluid in it (don't recall what kind) and his MTs.
MBWorld Fanatic!
Joined: Sep 2004
Posts: 1,717
Likes: 1
CLS55 AMG & RRS S/C
i dont think the lsd will help much with your launch. both tires are able to spin anyways, i know im able to lay down 2 patches of rubber on a burnout.
the lsd will make a difference in handling and u would notice it on the circuit.
if u want to imprive your 60' time, you should invest in some drag tires. that would make a huge improvement for your launch.
my best 60 on streets was a 2.065 or so and after getting DRs my best was 1.735. there is still room for improvement there as well!
the lsd will make a difference in handling and u would notice it on the circuit.
if u want to imprive your 60' time, you should invest in some drag tires. that would make a huge improvement for your launch.
my best 60 on streets was a 2.065 or so and after getting DRs my best was 1.735. there is still room for improvement there as well!
MBWorld Fanatic!
Joined: Jun 2006
Posts: 6,649
Likes: 207
'03 E55, Range Rover Sport Supercharged, Ducati 748R
our cars do put power down to both wheels at launch. no way I could have cut consistent 1.71's on street tires with a one legger. so put me down as one that unfortunately didn't see any gains from the quaiffe.
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Super Member
Joined: Mar 2003
Posts: 869
Likes: 35
From: Pacific NW
AMG GT-R
Ok, thanks for the replies. I was hoping I could take the easy route and have a LSD solve my problems, but it looks like that's not happening haha.
I wish I could run something like nitto's for the street and strip...but I think I'm limited in choices with 19" wheels?
I wish I could run something like nitto's for the street and strip...but I think I'm limited in choices with 19" wheels?
MBWorld Fanatic!
Joined: Jun 2007
Posts: 2,949
Likes: 0
From: Philadelphia, PA
2008 A8L, 2002 996TT X50, 2009 X5
No. You could easily run 17- or 18-inch rears (maybe even 16's?). Just need a taller sidewall to get to approximately the same overall diameter. More sidewall helps anyway, as it grips much better on the launch.
MBWorld Fanatic!
Joined: Jul 2008
Posts: 2,172
Likes: 3
From: Philly
997TT, C192 GT63, W464 G550, MS Plaid
you could do 275/40/17 MT radial on a 17x9 or 8.5 wheel. or you can go the 16" route and do a 255/50/16 MT. 16s will need to be custom made by either CCW or Bogart to clear brakes. Bogart does 6"s of backspacing on an 8" rim, i'm not sure of the CCW specs.
Former Vendor of MBWorld
Joined: Jan 2007
Posts: 3,193
Likes: 3
From: Glendale Arizona
C55,SL55,C63
1.567 60ft with no LSD in my car. very consistent 1.6's. Get some ET Streets Micky's. If your road racing then you will want the predictability of a good LSD. No doubt they are good to have. It just wont help that much for drag racing.
I guess like anything else there is room for debate on this.
I guess like anything else there is room for debate on this.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 1,637
Likes: 0
From: Tempe, Az
CLS55 AMG 030
try some Nitto NT-05's I have them in 275/30/19 and they handle my 580rwtq pretty good.
MBWorld Fanatic!
Joined: Sep 2004
Posts: 1,717
Likes: 1
CLS55 AMG & RRS S/C
just buy 2 smaller and lighter rims and drag tires.
throw them on at the track.
bust out a good launch!
much simpler than installing something like an lsd.
MBWorld Fanatic!
Joined: Sep 2004
Posts: 1,717
Likes: 1
CLS55 AMG & RRS S/C
