lightweight wheels = less drivetrain loss right?

sirgatti · 03-17-2008, 05:33 PM

Meaning a car with stock wheels will dyno with less HP than the same car with a set of Volks for example?

Easy question I hope... haha

I just want to make sure that I'm right.

e60.deluxe · 03-17-2008, 05:35 PM

unless its a hub dyno, yes.

pks17 · 03-17-2008, 10:31 PM

Im not sure if it will really make a difference on the dyno because your driving on rollers, but when your on the road, you can feel a big diff.
going from a tall rim/tire to a small rim and low pro tire make a even bigger diff, cause it changes your final drive. similer to riding a moutain bike and using the big gear or small gear when trying to accerlerate fast

e60.deluxe · 03-17-2008, 11:21 PM

being on rollers means that you dont have to carry the sprung weight, so being a heavy or light body wont make a different to the dyno.

but the wheels still have to spin on a dyno which will make a difference if its lighter.

sirgatti · 03-18-2008, 12:23 PM

Quote:

Originally Posted by e60.deluxe

but the wheels still have to spin on a dyno which will make a difference if its lighter.

That's what I was thinking.

03-17-2008, 05:33 PM	#1 (permalink)
sirgatti Senior Member Join Date: Dec 2007 Location: Charleston, SC Age: 19 Posts: 489 Gatti iTrader: 0 / 0%	lightweight wheels = less drivetrain loss right? Meaning a car with stock wheels will dyno with less HP than the same car with a set of Volks for example? Easy question I hope... haha I just want to make sure that I'm right.

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03-17-2008, 05:35 PM	#2 (permalink)
e60.deluxe Senior Member Join Date: Apr 2007 Location: Lake Forest, CA Age: 22 Posts: 4,952 iTrader: 3 / 100%	unless its a hub dyno, yes.

03-17-2008, 10:31 PM	#3 (permalink)
pks17 Senior Member Join Date: Nov 2007 Posts: 808 iTrader: 0 / 0%	Im not sure if it will really make a difference on the dyno because your driving on rollers, but when your on the road, you can feel a big diff. going from a tall rim/tire to a small rim and low pro tire make a even bigger diff, cause it changes your final drive. similer to riding a moutain bike and using the big gear or small gear when trying to accerlerate fast

03-17-2008, 11:21 PM	#4 (permalink)
e60.deluxe Senior Member Join Date: Apr 2007 Location: Lake Forest, CA Age: 22 Posts: 4,952 iTrader: 3 / 100%	being on rollers means that you dont have to carry the sprung weight, so being a heavy or light body wont make a different to the dyno. but the wheels still have to spin on a dyno which will make a difference if its lighter.