E90Post
 


TireRack
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > bad for car to run at high rpm?



Reply
 
Thread Tools Search this Thread
      01-26-2011, 08:38 PM   #23
DJKhan85
Major
DJKhan85's Avatar
Trinidad_and_tobago
11
Rep
1,188
Posts

 
Drives: 2011 4dr 6mt Golf GTI
Join Date: Jun 2009
Location: Boston Massachusetts

iTrader: (1)

Quote:
Originally Posted by Mr. 5 View Post
Man, if 3500 to 4k rom is high then I rev the crap out of my car every single day. I cruise around town in 3rd gear all the time. lol
Same here. I like the way it sounds

I do use my lower gears for engine breaking in the snow but then immediately shift back to higher gears when I want to accelerate. I never leave it in a low gear and try to accelerate in the snow. So for example, I may downshift from 4th to 2nd to slow down and then go from 2nd to 4th/5th once I'm ready to start going again.
__________________
2011 VW GTI 4dr-6mt-Sunroof-Nav-Xenons
OLD:
08 335i AW/CR/Poplar 6mt-ZSP-ZPP-ZCW-iPod-iDrive-PDC-Style 230s w/FK 452-Dinan LSD
Appreciate 0
      01-26-2011, 09:30 PM   #24
Yogi335
Private
1
Rep
98
Posts

 
Drives: 2010 E90 335i
Join Date: Sep 2010
Location: Arizona

iTrader: (0)

It actually surprises me how many people i know think going to redline in a car is "bad" for it. I know guys that have vettes that wont go over like 4k RPM (i dont think they know what theyre missing). Every time i wind one of my cars out they always say "isnt that bad for the engine."

I guess theoretically an engine may last longer never going over 4krpm, but why have the car then right?
__________________
2010 BSM/Saddle E90 335i (M Sport +more)
2006 Vette Z06 (Shifter, Thats it and thats all man)
2001 Honda CBR600F4i
Past Cars: 03 Stg 2 WRX, 05 Stg 2 92x, 06 IS350, 86 Vette, 05 Vette, 07 Jeep SRT8, 10 Camaro SS
Appreciate 0
      01-26-2011, 09:37 PM   #25
michaelalex17
Colonel
michaelalex17's Avatar
53
Rep
2,228
Posts

 
Drives: 335xi E92
Join Date: Aug 2010
Location: NY

iTrader: (3)

ok if you guys are responding by saying people dont understand that redlining isnt bad. then im sorry if i wasnt clear, believe me i know this and i do my fair share of spirited driving. i was more asking if lets say you drove at 6,000 rpm in first gear for an hour, what would happen?
Appreciate 0
      01-27-2011, 07:51 AM   #26
SilverII
Colonel
United_States
28
Rep
2,336
Posts

 
Drives: '11 335IS
Join Date: Jun 2010
Location: DFW

iTrader: (0)

Garage List
2011 BMW 335IS  [4.83]
no problem
Appreciate 0
      01-27-2011, 07:53 AM   #27
powerbarsk8ter
Private First Class
1
Rep
114
Posts

 
Drives: 09 E90 xi
Join Date: Mar 2009
Location: Washington DC

iTrader: (0)

What?!? Driving in the snow with lower gear and higher rpm? That is just nuts.
Appreciate 0
      01-27-2011, 08:43 AM   #28
XJS
Private First Class
2
Rep
112
Posts

 
Drives: 335iM
Join Date: Feb 2010
Location: Sweden

iTrader: (0)

Quote:
Originally Posted by michaelalex17 View Post
i know that redline isnt the true limit of the car, when you floor it the car shifts at redline so clearly thats not an issue, i was more talking about holding at a high rpm for an extended period of time.

"Engine braking passively reduces wear on brakes and helps a driver maintain control of the vehicle. Active use of engine braking (shifting into a lower gear) is advantageous when it is necessary to control speed while driving down very steep and long slopes." thats why i was in a lower gear. if you slam on your brakes in the snow you will slide but if you use the cars engine speed to slow you down it wont slide like your brakes will.
That tip is for when you are driving downhill for an extended period of time, if you then ride your brakes they might overheat and be useless when you really need them. Engine braking is also a way to keep fuel consumption low since when you are engine braking you are not burning any fuel in a direct injection engine.

But I really don't see how this translates to engine braking being better than your ABS brakes in the snow. Plus, remember to use your brakes once in a while, otherwise you might have to change them prematurely.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 04:58 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST