[Guest]

I have a 1970 fast back and I want to run 17s in the
front and 18s in the rear according to my measurements
I can run 245/45/17 in front and 295/35/18 in the rear
what I need to know is has any one done this before?
and what back spacing was used especially the rears I
am going to be using a Lincoln rear end with discs which I believe is a bit narrower but I don't know how
much any help will be appreciated
Thanks

 

[dodgestang]

Why do you want to run an 18 in the rear and a 17 in the front?

 

[Guest]

I'v seen it done on other cars and it gives it a cool look
kinda like the 70s look with big wheels in the rear and
small up front but I also want this thing to go around corners

 

[gt350clone]

Here's a good place to start.

Looks like you'll want 17x8 fronts with 4.5 - 4.75 B/S.
You'll have to get some rear end measurements to recalculate B/S with the new rear. With a stock rear, you're looking at 18x9 wheels with about 5.5" B/S. Don't think you can fit 10" wheels. Those 295's will be a TIGHT fit.

 

[Guest]

thanks
that's the same I came up with but Pirelli recommends 10"
for the 295/35/18 the tire it self physically fits in the wheel
well no problem but I need the correct back space to order
my wheels I think I'm going to have to wait for the rear end
to be in place in order to take an accurate measurement

 

[Jay]

Why not? It does look neat, I've seen it done on a few cars (the new Vettes come this way). Considered it myself for a bit but I'll warn you in advance that 18's are very rough on the street.

 

[Guest]

we have nice roads in New Hampshire
that size has a 4.1" side wall its not that bad