Thinking about Konig Kilogram or Milligram...

[Oxman67]

Thinking about getting either the Konig Kilogram or Milligram... Would these be appropriate wheels for the CX-7? can they hold up to the weight of the CX-7?

Thanks!

 

[Oxman67]

I really like the Kilogram...

 

[wannabe]

can they hold up to the weight of the CX-7?

Thanks!

you should have no problem with any wheel "holding up" to the CX-7. Its not a tank, and its not designed to carry a large load (so you won't be loading it with 2 tons of gravel or something). Don't worry about it.

 

[Oxman67]

Cool beans... that is what I was thinking but did not know. Thanks for clearing it up!

What backspacing? I was thinking around 45??? would I see any measureable differences in peppiness or mileage?

Hopefully give her a little more go with some lighter wheels...eventually an intake, Forge BOV, Maybe a downpipe... but I cannot stand how the aftermarket exhausts sound on these.

 

[wannabe]

+45 offset should be sufficient. I don't remember the exact specs right now, but that sounds right.


how heavy are the wheels? you'll only see a change in performance if they are significantly lighter than stock.

 

[Oxman67]

well those (Kilograms) are 19.2lbs... so about 4 pounds. I also like the Enkei PF01 which are only like 17.5lbs

is that significant enough to feel anything? Better MPG?

 

[wannabe]

[TABLE="width: 1171"]
<tbody>[TR]
[TD="bgcolor: #ffffff, align: left"]BMW 3 Series equipped with
Original Equipment (16")[/TD]
[TD="bgcolor: #ffffff, align: left"]Stock[/TD]
[TD="bgcolor: #ffffff, align: left"]38.7[/TD]
[TD="bgcolor: #ffffff, align: left"]22.8[/TD]
[/TR]
[TR]
[TD="bgcolor: #dddddd, align: left"]BMW 3 Series equipped with
Plus One (17")[/TD]
[TD="bgcolor: #dddddd, align: left"]Lightweight[/TD]
[TD="bgcolor: #dddddd, align: left"]39.0[/TD]
[TD="bgcolor: #dddddd, align: left"]21.5[/TD]
[/TR]
[TR]
[TD="bgcolor: #ffffff, align: left"]BMW 3 Series equipped with
Plus One (17")[/TD]
[TD="bgcolor: #ffffff, align: left"]Heavyweight[/TD]
[TD="bgcolor: #ffffff, align: left"]38.8[/TD]
[TD="bgcolor: #ffffff, align: left"]21.1[/TD]
[/TR]
</tbody>[/TABLE]



source

That was about 5lb per corner. the number all the way to the right is MPG, the number to its left is average speed on a track lap.

 

[Oxman67]

So no gain...Which I find really hard to believe but facts are facts. I have read 1lb of unsprung weight is good for upwards of 8lbs of weight removed. Rotating mass and all that jazz would be less too which would result in less power needs to start and keep them rolling. I wonder if it would change if the average speed was say 60-70mph?

 

[wannabe]

you are correct in your unsprung weight argument, issue is that if your formula is right, thats only 32/wheel, or 128 for the car. when the car weighs 3800lbs (FWD - AWD is more), thats not much.