18x9 KMC Monster/ Pro Comp 7089

4492 Views 7 Replies 3 Participants Last post by sirius815, Nov 19, 2010

lexhasatouareg

Discussion Starter · Nov 13, 2010

Hey guys, :wave:

I am looking to buy either of the rims mentioned below, but I just can't seem to be able to figure out whether they'll fit or not. I'm confused by all the different requirements regarding offset, backspacing and on top the metric/US conversion is making it even more difficult. Maybe somebody could explain what I need to look for... The bolt pattern is not an issue, because I am planning to get adapters for the wheels.

Also, is offset always in "mm" and backspacing in "in."

KMC Monster 18x9 - Offset: 35, Backside: 6.38"
KMC Rockstar 18x9 - Offset: 0, Backside: 5"
Pro Comp 7089 18x9 - Offset: -6 Backspacing: 4.75"

Thanks for a quick response.

Lex

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Anand

· #2 · Nov 13, 2010

for a 9" wheel you want an offset of ~60mm; that's what the stock wheels are...

Don't forget, if you get adapters, you need to get a "higher" offset wheel to make up for it...

e.g. if you want your final offset to be 60mm, and you have 15mm adapters, the wheels should be ET75.

Also, make sure the adapters are hubcentric, our wheel center bore is 57.1mm

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Anand

· #4 · Nov 13, 2010

OEM Atheos 19x9's are ET60, and that is "positive" offset...

Basically, the KMC Monster you posted, with out factoring in the width of the adapter, would stick outward 25mm (~1") farther than the stock 19x9's. I don't see that working at all, especially not when you figure the adapter will be at the very least 15-20mm thick

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Anand

· #5 · Nov 13, 2010

On the other hand.... Procomp 7089's have been put on a Touareg before....

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Anand

· #7 · Nov 13, 2010

Wheel Tech - Offset

As the numerical offset (positive) decreases, the face of the wheel gets closer to the center of the wheel (laterally) thus pushing the barrel of the wheel towards the outside of the car.

A spacer wouldn't physically change the face/barrel relationship, but does move the entire assembly out, effectively lowering the numerical offset

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