any 1 know a dealer that sells them in GLOSS black. been searching for a while now, nothin. o newbie question real quick. what are offsets and how do they affect the wheels,looks wise. also i see a lot of people getting 19x9.5 front and 19x10.5 back is that just a bigger center, cant notice a difference in pics?please help. any input in apreciated.thanks!

 

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an all black SF Challenge?

as for offset - it is the distance from the center line of the wheel to the mounting hub. Assuming width stays the same, the closer your offset is to 0 the further out (towards the fenders) the wheel sits. The farther you get away from 0, the closer in (towards the center of the car) the wheel sits.

So, you have a wheel that is 19x9.5 +20, and another that is 19x9.5 +30. The +20 will sit 10mm farther outboard, thus giving the car a wider overall look.

 

Offset is the distance between the mounting surface and the physical center of the wheel.

The best way to learn about offset is to use one of many offset calculators found on the internet. Experiment and see which way the wheel moves: towards the brake caliper or fender? Positive and negative offset (and the numerical relationship) can be mind boggling. Make some simple drawlings and use the calculator. You will get it figured out.

 

This is the best calculator I have found for offset. It redraws the graphic image of the tires and wheels for every change you make and also notes how the new settings will affect the car.

http://www.rims-n-tires.com/rt_specs.jsp

 

thanks for the calculator link, __jb! it's the best i've seen so far.