Wheel and Tire Help

67BBCuda said

Hey Folks,

We're finishing up the front suspension and brakes on the '67 Barracuda and I'm looking for some guidance on the wheels and tires. I have very little knowledge in this realm, so forgive any silly questions.

We are putting Wilwood Disks on the front.Wilwood Disc Brakes - 1967 Plymouth Barracuda Disc Brake Spindle - Front Brake Kit No.: 140-15459-DR

Right now we're looking at the Crager 390C Series. Series 390C Street Pro Wheel for Classic Hot Rods and Muscle Cars


Right now we have the pizza cutter wheels on the front, but want to go wider. We'll definitely go even wider on the back, probably as wide as possible without modification to the wheel well.

For the wheel size, does 15×7 work on the front? Also, my dad said he wants a 70 series tire on the front and a 50 series on the back. Do those work

Any guidance or personal experience would be helpful!

Click to expand...

Those Crager 390C 15x7 have 3.5" backspace. A factory Mopar 15x7 rim is 4.25" backspace that will fit your brakes and suspension. So the Crager will push you tires out toward the fender lip 3/4"... that's not good. The most narrow 70 series 15" common tire I found was a 195/70/15 (7.7" treadwidth, 25.7" diameter). That's too tall and wide with that rim pushed out 3/4"

With a 15x7 rim with 4.25" backspace you can fit a 215/60/15 tire fairly safely in front. 215/60/15 is 8.5" treadwidth and 25.2" diameter. Some (including myself) have fit 225/60/15 but that is very close and dependent on alignment setting, panel repair, etc.

That Crager is a 2-piece rim. Ask Crager if they can make a 15x7 with 4.25" custom backspace for you for the front trims. Or if you want a fat 70 series tire, ask for 15x6 rim with 4" backspacing and run 195/70/15's

In the back a 15x8 with 4.25" backspacing with factory rear axles (5x4 pattern) tend to allow a the widest tires. Should be able to fit 245,255,265/60/15 at factory ride height with original leaf springs. If rear is higher, you can fit wider.

Or are you running aftermarket 5x4.5 bolt pattern in the rear and front?