Tires
- Thread starter cheap1
- Start date
Remove your wheels and measure from the face of your brake drum/disc to the first point of contact to the inside and the same to the out side. That will give you a cross section then you will need to figure your backset from there.
This is what I did on my car.
Hey guys, I just finished putting disc brakes on my 61' I really wanted to change the ride hight on my car. In order to achieve the look I was after I had to go with 2" dropped spindles and dropped springs. No one out there offers a dropped spindle that will allow me to use the factory drum brakes so I upgraded to disc brakes. I ended up with about a 4" drop in the front and 3.5" in the back. I also went with a adjustable panhard bar in the back to square up the rearend. In place of the 14 X 6 8.00X14 factory skins I opted for 18X8 with a 5.5 backset wrapped in a 245/40 BFG for the front and 18X9.5 with a 5" backset wrapped in a 285/40 BFG in the rear.
Good luck
This is what I did on my car.
Hey guys, I just finished putting disc brakes on my 61' I really wanted to change the ride hight on my car. In order to achieve the look I was after I had to go with 2" dropped spindles and dropped springs. No one out there offers a dropped spindle that will allow me to use the factory drum brakes so I upgraded to disc brakes. I ended up with about a 4" drop in the front and 3.5" in the back. I also went with a adjustable panhard bar in the back to square up the rearend. In place of the 14 X 6 8.00X14 factory skins I opted for 18X8 with a 5.5 backset wrapped in a 245/40 BFG for the front and 18X9.5 with a 5" backset wrapped in a 285/40 BFG in the rear.
Good luck
It did a little bit on mine. My tires are pretty much stuffed into the fender wells and it was necessary for me to bring the rearend back to center. I had to do it on my 63 SWB as well.
100.00 and worth every penny.
Showcars???
Harmon's hasa djustable pan hard bars for $69.00.
To try and answer the original question about tires, I just put P235 75R 15's on my 63 and they JUST clear. I installed SCR's 2 1/2 Inch mandrel bent exhaust system with the Show Car Hangers and it all works, I also used Dynomax Super Turbo mufflers.
Thanks, I've got the same tires on mine right now, but would like to be able to fit a 10.5" tire underneath. Sounds like I'm going to have to do the tripower math lesson to figure it out.
Thanks for all the input guys
I run N50 15 under the rear of the 60 
Running Corvette Ralley rims with about another 2" of space.
http://www.pontiacserver.com/tires.html - usefull tire info
Running Corvette Ralley rims with about another 2" of space.http://www.pontiacserver.com/tires.html - usefull tire info