Originally Posted by Grumpy
Well I have been looking around on the web, found these that I am interested in. Now my question is will they bolt up and will they stick out some? Please bare with me, I'm a noob when it comes to offest's on rims.
Yay or nay lol
For comparison sake, I looked up the info and specs of your current Ion 133's. 16x8 w/ 4.25" backspace.
The wheels you linked us are 17x9 w/ 4.75" backspace. These will stick out 1/2" more than your current wheels. I vote yes since you're after not too sucked in, yet not to pushed out either to protect your paint.
Without going too into detail and possibly confusing you, but still might confuse (lol)...
Backspace is a measurement of the space between the back of the wheel and where the wheel mounts to the brake. Bigger the number, the more sucked in it is. Smaller number, more sticking out. Your Ion's are 4.25...the ProComp's are 4.75. At this point, they are 1/2" more sucked in than your Ion's. BUT...they've got a 1" wider overall width. Mix this all together, you're net difference is 1/2" more sticking out than your existing. In other words, it'll look very very similar to your existing setup. Probably better looking.