4.10's with an A4
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Joined: Jan 2001
Posts: 17,681
Likes: 11
From: Central Jersey
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I personnaly think they are too much for an A4 but thats just my .02. If you dont do that much highway mileage and looking for the most at the drag strip they are nice. You will be turning a lot of rpms on the highway. My 3.73's were about 2400 at 70 mph. I recommend either 3.42's or 3.73's depending on the combonation and the purpose of the car..
Advanced
Joined: Dec 2003
Posts: 59
Likes: 0
From: Fullerton CA
I have 4.11 on my 2001 with A4. I love it, and I only use this car for weekend. So it is not a daily drive car. With 4.11 you will feel that the car has 100 more horsepower. Gas mileage went down by about 5 mpg (I had 2.73 before). After about a month of drving with 4.11, you will get used to it ,and it will just feel like everyday car. However, for everyday drive, 4.11 might be too much. Gas mileage is bad, RPM is too high. I think for daily driver 3.73 is good with some kind of Torque convertor.
Le Mans Master
Joined: Jun 2004
Posts: 7,155
Likes: 154
From: The Arid Sunny Desert
Vette Doctors recommended 3.90's for my A4 and he swears that I will love the combo. Not as high as 4.11's but a definite improvement over 3.42's. I'll re-post once I get the car back.
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
I like my 3.42. Do a lot of highway miles and higher revs equal lower MPG and higher trans/engine temps! Its hard enough keeeping my tires from lighting up already...can't imagine a higher gear is necessary.
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
6 speed owners can tolerate 4.10's... mainyl because fifth and sixth gears are both overdrive. When on the highway, they can still keep the RPM's down to a tolerable level.
The A4 only has one overdrive gear.
The A4 only has one overdrive gear.
Melting Slicks
Joined: Feb 2002
Posts: 2,613
Likes: 0
From: Winston Salem NC
I have 3.90's and am very happy with them. My mileage around town actually is better. It's about 5 mpg less on the highway. I don't like the idea of lots of highway with them. The RPM's are too high for me. I only take a couple of 100 mile or so trips a month since installing them. I would not recommend any more gear than 3.90 if you plan on doing more than 70 mph regularly. Don't even think about traction on the street, when you mash it.
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Le Mans Master
Joined: Jun 2004
Posts: 7,155
Likes: 154
From: The Arid Sunny Desert
Originally Posted by gojo
I have 3.90's and am very happy with them. My mileage around town actually is better. It's about 5 mpg less on the highway. I don't like the idea of lots of highway with them. The RPM's are too high for me. I only take a couple of 100 mile or so trips a month since installing them. I would not recommend any more gear than 3.90 if you plan on doing more than 70 mph regularly. Don't even think about traction on the street, when you mash it.
Burning Brakes
Joined: Aug 2004
Posts: 783
Likes: 0
From: Phoenix Arizona
I was thinking of that same question which rear end would be best all around everyday driver for the A4. Thanks for the input guys. Just like to know what the total cost would be to change the rear end. I got 2.73s now and it needs improvement. (badly)
Melting Slicks
Joined: Feb 2002
Posts: 2,613
Likes: 0
From: Winston Salem NC
Originally Posted by Pewtavert
So do we have to feather the gas when lined up against that supercharged Mustang? There is one auto equipped supercharged Stang on Staten Island that is wicked fast, couldn't keep up with him with the 3.42's.
Melting Slicks
Joined: Sep 2003
Posts: 2,669
Likes: 5
From: Florida Gulf Coast
St. Jude Donor '05-'06-'10-'11
Is there a noticable difference going from 3.15's to 3.42's ?
I don't particularly want to give up the highway mileage with 3.73's but I would like a little more ummph from a stop. I do not race.
I don't particularly want to give up the highway mileage with 3.73's but I would like a little more ummph from a stop. I do not race.
Pro
Joined: Mar 2003
Posts: 524
Likes: 0
From: Draper Ut
I'm going with 3.90's and a TCI 4000. Was able to ride in a fellow Vette with the same combo and OMG that thing was a riot to ride in and drive. Throw some Kumhos on your bad boy for daily driving and then get some DR's for the track. I promise you won't regret that combo. 
Team Owner
Joined: Jul 2003
Posts: 20,474
Likes: 2
From: Detroit
Originally Posted by love2dye4u
I have 4.11 on my 2001 with A4... Gas mileage went down by about 5 mpg (I had 2.73 before)...
Yikes. 5 mpg's fewer per gallon in addition to my 'slight' hit with the ProCharger ... Ouch ...
Cheers,
Mark
Burning Brakes
Joined: Mar 2002
Posts: 1,176
Likes: 0
From: highland village texas
Originally Posted by Pewtavert
There is one auto equipped supercharged Stang on Staten Island that is wicked fast, couldn't keep up with him with the 3.42's.
Melting Slicks
Joined: Nov 2003
Posts: 3,396
Likes: 2
From: North Manchester Indiana
got 373 in my a4,, would not suggest anything steeper,, mileage went down a few,,,anything higher woul dbe too much for the highway for long trips,, imo....with a maggie they add a real kick
Le Mans Master
Joined: Jun 2004
Posts: 7,155
Likes: 154
From: The Arid Sunny Desert
The 3.90's will be coupled with my heads/cam combo, PT 2400 converter (not too steep of a stall speed), Kooks w/ Corsa Indy's, Pro-Flow, Z06 intake manifold to produce an awesome street machine with acceptable highway driving. I feel the 3.90's should be better than 4.11's on the highway and the 3.90's should be a tad better than the 3.73's on the street.