Yeah, I think that's about as tight as you can fit on the older cars. I've got a 67 Dart and made up a little template from some poster board and cut out a 28" circle and it was really close to the front fenders. Ten inches is probably about right on the section width. I've got some 225 tires on the rear of my car now and they are a tight fit. My backspacing isn't ideal though. If it was dead center I think I could get away with 255 tires and be comfortable driving it around. I do have rolled wheel lips though. When I fit put the new tires in one side would scuff the lips on turns, so I rolled them and put on some air shocks for some extra clearance, haven't touched since.
ok well i got it all measured up today and here is what i got...
NOTE: All These Cars are Different So Measure Your First Before Buying Wheels And Tires!!!
ok pic one is 15x6.6 (4.25BS) steel wheel
next is the distance from center of axle to front wheel lip = 14.5"
third is from the front of the wheel into the upper wheel well (2 or 3 o'clock) this is the closest point in the front = 1 3/8" clearance
fourth is of the rear of the wheel well... again at the point where the tire will be closest = 1 5/8"
last is a calculated picture of the clearances (top View)
numbers are as follows with the above 15x6.5 @ 4.25 BS (no spacer needed)
on the inside of the rim the closest points to the tire (@ 28" tall) is 2" in the front ( minus .25 for clearance for 1 3/4) and 1 3/4 in the rear (again miuns .25 for 1 1/2)
on the fender side i got above measurements but i plan on at least rolling a 1/4 of the lip (3/4" wide) giving me the 1/4" clearance)
so with these numbers it gives you a max of about 9.2 section width and 28" tall with Firestone Indy 500's 235/70/15 are an exact match...
