Impressions - Changing to bigger rims
09-24-2009 | 08:55 AM
#11
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Joined: Mar 2009
Posts: 606
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From: South. Deeep South.
My Ride: 2008 535i Monaco blue/cream beige, light poplar trim, sport, nav, premium, Logic 7, 6 speed manual
My other rides:
Departed: 2006 530xi Silver gray/black, anthracite maple trim, cold, sport, nav, premium, Logic 7, 6 speed steptronic, bluetooth, adaptive xenons
Departed...2002 525i White/beige, 5 sp manual
Originally Posted by spiros' post='1015858' date='Sep 24 2009, 11:22 AM
I really cannot say it is quite difficult to calculate for the uninitiated. Somebody with proper automotive knowledge only will know the K factor of the moment of inertia in alloy wheels , calculating the required toque at wheel end etc. With my limited know how i can only figure out a few things
Don't forget though, by changing the wheels to bigger ones is not just the moment of intertia and the roational axis that get bigger.
Effectively you're changing your gear ratio as well from engine --> wheels . This alone will affect acceleration. Although to be honest if the overall dia difference is minimal it wouldn't affect it much
Don't forget though, by changing the wheels to bigger ones is not just the moment of intertia and the roational axis that get bigger.
Effectively you're changing your gear ratio as well from engine --> wheels . This alone will affect acceleration. Although to be honest if the overall dia difference is minimal it wouldn't affect it much
My husband does this to me all the time.
Of course, he goes around with knots on his head too....
09-24-2009 | 10:07 AM
#12
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Joined: Mar 2009
Posts: 606
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From: OK
My Ride: 540i
Model Year: 2017
Originally Posted by BMRMEUP' post='1015895' date='Sep 24 2009, 11:55 AM
Of course, he goes around with knots on his head too....
I agree that the larger rims and lower profile tires look better. My car still has the 138s with 50 series Continentals. I can't see them while I'm driving and am hesitant to give up their smooth ride.
Another problem. I keep pictures of my kids in my wallet where the money used to be.
09-24-2009 | 11:02 AM
#13
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Joined: May 2009
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From: Geordie Land
Originally Posted by BMRMEUP' post='1015895' date='Sep 24 2009, 05:55 PM
Are you saying "It's technical ma'am...."?
My husband does this to me all the time.
Of course, he goes around with knots on his head too....
My husband does this to me all the time.
Of course, he goes around with knots on his head too....
I was saying though it's too technical for me as well!
09-24-2009 | 03:21 PM
#14
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Joined: Mar 2009
Posts: 606
Likes: 0
From: South. Deeep South.
My Ride: 2008 535i Monaco blue/cream beige, light poplar trim, sport, nav, premium, Logic 7, 6 speed manual
My other rides:
Departed: 2006 530xi Silver gray/black, anthracite maple trim, cold, sport, nav, premium, Logic 7, 6 speed steptronic, bluetooth, adaptive xenons
Departed...2002 525i White/beige, 5 sp manual
Originally Posted by 530inOK' post='1015946' date='Sep 24 2009, 01:07 PM
Another problem. I keep pictures of my kids in my wallet where the money used to be.
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