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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Rpm at 85 mph



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      03-22-2016, 06:45 PM   #1
rick100
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Rpm at 85 mph

I m just curious to know what is your rpm at 85 mph

After all my mods I m cruising at 3000 rpm at 85mph with auto transmission

Is it too high?
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      03-22-2016, 06:57 PM   #2
justpete
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Quote:
Originally Posted by rick100 View Post
I m just curious to know what is your rpm at 85 mph

After all my mods I m cruising at 3000 rpm at 85mph with auto transmission

Is it too high?
About 3600 at 85 so 3000 is just normal.
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      03-22-2016, 07:04 PM   #3
SDemetris
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Quote:
Originally Posted by rick100 View Post
I m just curious to know what is your rpm at 85 mph

After all my mods I m cruising at 3000 rpm at 85mph with auto transmission

Is it too high?
no mods, except a new differential or transmission, will change your RPM at a certain speed
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      03-22-2016, 07:12 PM   #4
rick100
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Quote:
Originally Posted by justpete View Post
About 3600 at 85 so 3000 is just normal.
3600 rpm at 85 ! it seems high but then again your car has so many mods

Makes me feel better at 3000 rpm
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      03-22-2016, 07:41 PM   #5
justpete
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Quote:
Originally Posted by rick100 View Post
3600 rpm at 85 ! it seems high but then again your car has so many mods

Makes me feel better at 3000 rpm
SDemetris said it, rpm at speed is purely a function of gearing. Stock on my car was 3.23, it's now 3.91, or will be when it ever shows up again...
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