I have a set of Wired Wheels WI19 rims. They are 18x8 wheels with 225/45/18's. For sometime now I have been trying to determine the offset of these wheels. Stamped on the inside is a bunch a numbers and symbols but nothing that seemed like an offset number. I found the company website but they could only direct me to a distributor. The distributor told me they would fit but could not give me an offset either. I got these pretty much for free and the look good. I want the proper offset for proper fit. The tires need replacing soon but I'm not buying tires if they don't fit right. I'll just sell them. They came from an 03 Gallant. Is there any way to figure out the offset myself buy measuring it somehow? Thanks.

Joe

 

from wikipedia.com

Calculating the offset of a wheel is a fairly easy mathematical equation. First, measure the overall width of the wheel (remember, just because a wheel is 18x7.5, does not mean that the OVERALL width is 7.5”. It means that the measurement between the outboard flange and the inboard flange is 7.5”). Next, divide that width of the wheel by two; this will give you the centerline of the wheel.


Overall width/2 = Centerline


After determining the centerline, measure from the hub-mounting surface of the hub to the edge of the inboard flange (if the wheel were laying flat on the ground – face up – your measurement would be from the ground to the hub-mounting surface). This is your back spacing.


Centerline - Back spacing = Offset in Inches


Inches x 25.4 = Offset in mm

 

i have to be missing something. you have the wheels, you have the car. put them on to see if it fits. i promise its not hard

 

Its not as easy as it sounds due to limited space around here and hills. However I did put them on today. They sit flush with the fender and the rear wheels due rub very slightly when I go over swails and dips. Post pics later tonight with a few different angles.

Joe

 

are you on coilovers?

 

Stock suspension.

 

you shouldnt be rubbing with any wheel on stock suspension.

 

as far as I know its stock. How do I determine if its not? Measure ground clearance? Anything I can look at that will give it away? I am also going to measure the offset using the formula found above later tonight. Thanks.

Joe

 

Due to weather and just plain lack of time, I never got a chance to take a wheel of and measure the offset. However, the rubbing that I had in the rear wheels has been non-existent since day two of the install. I have been checking the tires and there is no apparent damage to the tire. I did notice the fender had some black rubber gunk on the inside lip after I first head the rubbing. I washed it all off and check it whenever I was the car and haven't found any since. Maybe the suspension needed to adjust???? I have no clue but I am happy now and promise pics up this weekend.

Joe