Biggest Tire I can run on my 70 Challenger

[69CHARGERMD]

70 Challenger 
I am installing a DANA from Dr Diff ( that was made for a B body ) so I can get more clearance. ( stock wheel wells, no mini-tub )
I have the 1.5" off set hangers and shackles he provided.....

If I recall, he mentioned I could run a 10" rim with 5.5" of back spacing

Is anyone running any of the listed tire sizes ??
- 295/65/15 (Drag Radial) ?
- 29/12/50/15 Hoosier Prostreet radial ?
- 28/12/15 MT Sportsman SR Street radial ?

Pic's would be great....
I want to stuff a BIG tire under the car, that is the reason I went with the B body DANA and offset hangers, etc.

thanks
Doug 

[dave73chally]

  I'll be going with the dr. Diff 1.5" kit in the future also. Want to know how wide I'll be able to fit on a 17/18" wheel

[69CHARGERMD]

Dave,
Dr Diff ( Cass ) was great to work with......
I got the DANA, offset kit, rear ( and front ) disc set up from him,,,
very friendly, and helpful over the phone...
What differential do you have in the car now ? ( i had a 8 3/4, but removed it as I proceed with restoring my car )

Doug

[Dusty1]

295/50/15 B F Goodrich

[dave73chally]

Dusty that looks great. How wide is your rear wheel? Do you have dr. Diff. 1.5 relo kit? I have 15x8 with a 275, want to go bigger once these are burned up.

[69CHARGERMD]

I have a 295/65/15 on my Charger,,,and like how it fills out the wheel well,,,,,
Dusty,,,NICE car,,,,,

[69CHARGERMD]

[dodj]

I have 315's on 17"x10.5" rims with the 1.5" Dr. Diff offset kit.

[Dusty1]

Thanks guys! Just an 8.5" wheel with just over stock offset. Clears the springs easy, all OE.

[Chryco Psycho]

I have a 295 50 15 under my Chall without the narrow diff or spring offset

[brads70]

I have 295/40/18 on mine with room to spare.

[KillerBee]

I'm going to do some experimenting with my wife's 1971 R/T Challenger this summer.

I've been collecting parts for years.

I have a 1970 B body rear end that I'm going to install with Dr. Diff's offset hanger kit.

My wheels are custom made Torque Thrust 15x10 with 5 3/4" back spacing.

The tires are 325/50-15 BFG drag radials that are listed as 28" tall 13" total width with 11.75 tread width.

I hope to tinker with some 1/4" wheel spacers and see if it will fit.

I test fitted 28x12.50 ET streets under our other stock width 1971 R/T Challenger on 15x8" rims with 4 1/2" back spacing with no problems...see pic below.

I plan to re-test fitment of the ET Streets now that the car is sitting lower.
In the bottom pic I'm using a 15x8 rear wheel with 275/60-15 street radial tires and have plenty of room.
The Dana is stock E-body width.

[HP2]

I have the same mod sheet as you; 1" inset springs, B body rear. I'm using a 15x10 wheel, 5" backspace. Currently using MT SR 26x12x15. I've got plenty of room and may consider stepping up to a 28x12 next time. My avator to the left has a 295/50x15 on 15x8, 4.75 backspace with stock springs and housing. It also fit without any issues but was kind of close to the springs.

I've put a 295/65x15 on a 15x8, 4.5" backspace. It fit in the wheel well, but the aspect ratio was way off with the rest of my combo. Didn't look too good on my car.

[69CHARGERMD]

Thank you guys !!!
Appreciate all the info,,,,,,
Some very nice rides,,,,
Glad to hear a 295 or 315 fits

[73restomod]

I have B-body rear with doctor diff 1" kit. I have 1.125"-1.5" to the leaf from the sidewall (285\40-18) with 5.75" backspace from back to front because leafs have a little V to them.