My "new" '74 Duster- or why I need a project like a hole in the head
Sorry I worded that badly. Really what I want is the width of your rear axle, outside side wall to outside side wall, and the same up front. I want my tires to sit in the wheel wells identical to your car. I want to make sure before ordering the custom offset rim$ for my narrowed axle that I've got the back spacing right. Simplist way I can think of insuring that is to match the track width you have. The front isn't a big deal as that is pretty much a known for a 275/35-18 but my rear set up is way out of the norm.
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Ok, measuring from the outside edges of the sidewalls (widest part) using a set of toe plates I get
Rear- 69"
Front- 70"
So, not the true track width because it's outside to outside. And I really did get even numbers, not sure how that worked. But it is pretty much what you have to deal with for clearing the tires. The front of course has a full -1* of camber, so, that helps.
The rear axle on my car is a 68-70 B body rear, and it does measure 60-1/8" from wheel mounting surface to wheel mounting surface. The rest is 18x10's with a 7" backspace and 295/35/18's.
Also, I measured the tire overhang on the rims, the distance from the outer edge of the sidewall to the outer lip of the rim. I got a little less than I expected, only .25" in the back and .275" in the front.
It makes sense, the section width specs are 10.9" and 11.9" for my tires and the outside rim measurements are 10" and 11". But the measuring rim for the specs are wider than my 18x9's and 18x10's, so I'm getting a little squeeze on the section width. It's only about .4" (little less in the front) but that's something.