buying a set of used weld wheels and need to know quickly what the offset would need to be to be able to put 275 60's on the rear of my 1970. i have seen from 4" to 5.5" on 8" rims and im a little confused since these are soo wide i would assume it's pretty close. thanks jk

------------------
members.aol.com/jnkb2cool/chevelle.jpg (http://members.aol.com/jnkb2cool/chevelle.jpg) John Krenn
Ft.Worth, Tx

I have 275/60's on my 71 with 4 1/2in backspace on the 15x8's.

------------------
JT
71 SS 350 soon to be Vortec 355 then a 454
www.angelfire.com/co/KellyMotorsports (http://www.angelfire.com/co/KellyMotorsports)

thanks is the picture of your car with the 275's???? look a little small. ANYONE ELSE???

Beautiful car JT, I love that color!

The 275s look a lot bigger in person, I have em on my '73 with 4.5" backspace and they are kinda close.

------------------
Sean
Heavy '73

Yup those are 275's they are small looking untill you yank them off the car. Sizes vary somewhat from manufacturer to manufacurer so some others may be larger slightly.

Sean- soon I should have a couple new pics they ought to be really good I let y'all know when I get them.
------------------
JT
71 SS 350 soon to be Vortec 355 then a 454
www.angelfire.com/co/KellyMotorsports (http://www.angelfire.com/co/KellyMotorsports)




[This message has been edited by L6571SS (edited 07-28-99).]

it is 5.5 offset on these wheels WILL THIS WORK???? roadhugger radials

Guys, I've spent many an hour at this exact section before I purchased my set of rims & tires. It is true you can fit a 275/60/15 under the rear of 70 with a 15 x 8 w/4.5" of backset. What I did was put a 295/50/15 on a 15 x 8.5 w/5.0" backset. No rubs period.
However, every car/frame/rear/exhaust is ever so SLIGHTLY different. "Measure twice cut once". Your shock mounts and exhaust are the 2 greatest fit considerations. Also keep this in mind: stock height/rate springs? This too: Each tire manufacturer has a different rim width requirement; i.e.; a 295/50/15 BFG TA needs only an 8", other tires need 7.5", others need 9.0" to SAFELY locate the bead. Hope my headaches helps someone else.
Ron70

Hi Ron 70,I am also trying to fit 295/50/15 on the rear of my 70 also. I received a few very good suggestions in the wheel tire section. 67 Ratt tells me to use a 5.5 inch backspacing on a 10 inch rim. I will use that advice and let eveyone know how it works so we have a set standard for this combo. Anybody have any pics. of the 70-72 with this rim/tire on it? Will like to know how it looks. I also had 275/60/15's on the same car with the vette 8 inch rim with some rubbing when I put somebody in the rear seat, might want to check the backspacing on each rim you encounter.

I am currently running B.F. Goodrich TA radials on my car now. 275/60/15 on 8 inch wheels with 5.0 backspacing. I have approx. 1.0 inch of excess space on the inside and outside, or almost perfectly centered with a stock posi rearend. Tires are 28.0 tall. I have had six people in the car and no rubbing at all with stock suspension.
I hope this helps.

Thorss70,
Yes, you PROBABLY could use a 15 x 10 w/ 5.5" of backspacing. You should really closely examine the lower shock mount areas on BOTH sides and the exhaust interference. Also, 2 things additional to consider besides what I mentioned earlier, Sounds trivial, but with a 5.5" backset, where will your wheel weights (if used) sit? With a 5.5" backset on a 15" rim, that lower shock mount is almost on top of the inside edge of that rim. Secondly, if you like to drive your SS, not just look at it, consider new (poly if you like) rear arm bushings to keep things "in order"

Hey Ron70 This is the first experience with such a large wheel on this car I will check this out it is something I did not consider. I will be driving the car a whole bunch and was doing a rear end swap real soon and thinking what bushings to use, poly or del-alum from global west. I talked to a guy at the local friday night cruise and he said his poly bushings do not squeak at all like the rumor has it. So I will probably be using those.

OK here's the scoop they are actually 4" offset so i tried the tires and they fit but they look like they may get shaved if i drive it. Can i cut the lip a little????? without hurting it??????