I would assume that the center driveshaft/propeller shaft is different along with the rear axles since the RS4 rear diff is smaller. The front axles are the same though. Audi changed a lot of stuff in the back of the RS4s like suspension and axles to accommodate the rear differential.
Haven’t had time to go yet. I am going to the tracks a bunch this month. Just actually finished up my prep work a few hours ago for going down to VIR this weekend. After that I will be heading to the dragstrips and it is looking nice and cold next week.
am I gonna have to worry about breaking driveshafts once im stage 1. I too launch with reckless abandon lol.
Probably not. You don’t have LSDs in the front and back.
If your inner CV joints are leaking then I would change the boot sooner rather than later.
I do plan on doing a rear lsd but not for awhile. is it the fronts youre having the most trouble with? and is it because of the front lsd?
In terms of the axle, driveshaft, & mounting connections, the diffs are the same. I’ve got a non-RS4 rear pumpkin on my RS right now and didn’t change anything else. The pumpkin itself is definitely smaller though. I wanna say I checked on etka and the axle part numbers were the same between the B7 S4 & RS4 well, but don’t quote me on that one. I do know the RS6 rear pumpkin has different rear axles…
I have some rear RS4 axles and suspension shelved for a later project and I am pretty sure that the rear RS4 axles are noticeably longer. My dealership parts guy was not too happy with me one day because I had him compare part numbers between my B6 S4 and a RS4 to see what was different.
Don’t know why but my other message for this got timed out.
Anyways, I kept breaking the left front inner CV joint. The right front inner joint broke too but it had like 80K miles on it and the boot was leaking slightly too.
After a lot of thought, I think the issue with the left front CV joint breaking was because of a lot of things compounding the issue. Reckless abandonment launching the car + LSDs front and rear + wider/sticker tires + LW parts (wheels and tires) + a lot of low end torque.
are the rs4 and s4 driveshafts the same?
Good time to upgrade to light weight wheels 
The season is coming to an end, how did you finish it off Jimmy. What’s your best time on the strip so far?
I would assume that the center driveshaft/propeller shaft is different along with the rear axles since the RS4 rear diff is smaller. The front axles are the same though. Audi changed a lot of stuff in the back of the RS4s like suspension and axles to accommodate the rear differential.
Haven’t had time to go yet. I am going to the tracks a bunch this month. Just actually finished up my prep work a few hours ago for going down to VIR this weekend. After that I will be heading to the dragstrips and it is looking nice and cold next week.
am I gonna have to worry about breaking driveshafts once im stage 1. I too launch with reckless abandon lol.
Probably not. You don’t have LSDs in the front and back.
If your inner CV joints are leaking then I would change the boot sooner rather than later.
I do plan on doing a rear lsd but not for awhile. is it the fronts youre having the most trouble with? and is it because of the front lsd?
In terms of the axle, driveshaft, & mounting connections, the diffs are the same. I’ve got a non-RS4 rear pumpkin on my RS right now and didn’t change anything else. The pumpkin itself is definitely smaller though. I wanna say I checked on etka and the axle part numbers were the same between the B7 S4 & RS4 well, but don’t quote me on that one. I do know the RS6 rear pumpkin has different rear axles…
I have some rear RS4 axles and suspension shelved for a later project and I am pretty sure that the rear RS4 axles are noticeably longer. My dealership parts guy was not too happy with me one day because I had him compare part numbers between my B6 S4 and a RS4 to see what was different.
Don’t know why but my other message for this got timed out.
Anyways, I kept breaking the left front inner CV joint. The right front inner joint broke too but it had like 80K miles on it and the boot was leaking slightly too.
After a lot of thought, I think the issue with the left front CV joint breaking was because of a lot of things compounding the issue. Reckless abandonment launching the car + LSDs front and rear + wider/sticker tires + LW parts (wheels and tires) + a lot of low end torque.
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I haven’t found a better place to say. Great additions to the DIY stuff. That’s great stuff.
Also give the car some good gas if your going to the track. Check out the race gas thread there is a lot of great homebru stuff you can do and it works great. Better fuel keeps the motor safe. Also ice the intake good. On your launches I watched some of your videos you really launch the car hard. Let it hit the launch assist and don’t drop the clutch quickly feed the car clutch. Your making too much tq to drop the clutch. Doing it the quick feed way will result in less broken parts and more consistent lower 60’ times.
.
I haven’t found a better place to say. Great additions to the DIY stuff. That’s great stuff.
Also give the car some good gas if your going to the track. Check out the race gas thread there is a lot of great homebru stuff you can do and it works great. Better fuel keeps the motor safe. Also ice the intake good. On your launches I watched some of your videos you really launch the car hard. Let it hit the launch assist and don’t drop the clutch quickly feed the car clutch. Your making too much tq to drop the clutch. Doing it the quick feed way will result in less broken parts and more consistent lower 60’ times.