dchl21

Hi bros,




I down shift ALOT to slow down .... almost everytime I slow down ...am I risking anything by doing it so often ?




my 2nd gear went on the dyno so I did a full rebuild with all oem parts... so on the new tranny I still down shift ALL the time ... just wondering if im shortening the life of my tranny




thanks alot

E55amgsd

I don't know if it's really bad but it's bad ..I think there is no need to do that .imaging your pistons/tranny going on full for every time you stop..(bad)doing this all the time will eventually cause something wrong to either you engine or tranny ..

C3Duece

brake pads are a lot cheaper than clutch packs

biggking

I downshift only in comfort mode. Seems to be the smoothest. You are right on the brake pads though.

mightar

Utilizing engine braking in a manual tranny is fine. Not good on an automatic. I believe the vehicle's manual calls this out.

MAN55LE

In my opinion it will definitely shorten the life of the tranny, but if you were to match engine speed with Road speed example blip the throttle as you hit the downshift button you can match the two but to high too low would make the tranny suck ***** also....But I have heard of guys that do it, only when I'm feeling spunky do I choose what to do with the transmission, otherwise I just let the beast be a beast. And I agree with the comments on brake pads being cheaper than any transmission repair... Stop doing that to your tranny.

biggking

owners manual says its good.

http://www.mbusa.com/vcm/MB/DigitalA...tic_sedans.pdf

page 159 & 160

Yacht Master

I don't always down shift my AMG, but when I do, it makes gasoline.

Stay fuelled my friends....

mightar

Ah, thanks bigking. I was getting confused with putting the car in neutral while going downhill.

berti_00

I down shift eveynow and then too

dchl21

so ...can I do it all the time or no !!!!!????? I didn't do it all day today ... I wanna do it so bad ... it doesn't feel right just brake

berti_00

i dont down shift to slow me down lol i just do it when i wana floor it or on slow streets to hear the car on lower speeds rumble lol

chiromikey

I don't think that's what the manual says. Downshifting is different than using a certain gear for engine braking. Downshifting continuously for no reason (and at higher rpms than the trans would otherwise use) will wear out trans parts quicker whereas selecting a certain gear for engine braking on a steep downgrade won't. No serious car enthusiast will ever tell you engine braking is a good thing, that's what brakes are for.

Yes to the original question, IMO, you will likely shorten the life of your trans.

kompressede

REALLY?

Downshifting every time? So, you're driving the AMG as if you had a Jake Brake ??

Odd?

Enigma94

It's common sense, the tranny works twice as much if you downshift to brake so of course it's going to wear out your clutch packs twice as fast. If you want to shorten the life of your tranny then go for it man.

biggking

Don't forget that in 'C' mode you get downshifts automatically by the ECU and trans. Go and drive your car, it does it by itself.

chiromikey

The trans downshifts automatically in every mode...but at much different rpms to avoid engine braking.

400RWHP

Not only does this do harm to the clutch packs, but think about this logically. If your engine is spinning higher RPMs, everything in the motor is spinning faster, i.e main bearings, rod bearings, camshafts, things spinning inside seals (rear main), pistons going up and down more cycles inside cylinder walls, valve trains, all of which is wear and tear. Wear and tear eventually kills all engines regardless of make and builder. Ask any machinist and they will tell you that every time you use something that is one less time it is going to work later. Why would you want to do that to your car? Any car. Like Chiro said, that's what brakes are for. Pads/rotors versus $4k transmissions and $8k engines seems a bargain to me.

dchl21

I just love the way it feels to slow down and how it sounds .... I stoped doing it now..

Quadcammer

damn those fast spinning main and rod bearings.

aside from that little oversight, i agree with the rest.