E-Body Tire Sizes (what fits, what's too big, what looks good)

[kape1]

Hi, Is it possible to fit 15x10 rims with 3,38 backspace under -71 Cuda if I use dr diff 1" relocation kit and custom cut the 8 3/4 axle ?
Thanks.

[7212Mopar]

With that BS and spring relocation kit, you have a lot of space between the wheel and spring leaf but will hit the quarter panel. 10" wheel with 5" BS will clear without the spring relocation.

[HP2]

Hi, Is it possible to fit 15x10 rims with 3,38 backspace under -71 Cuda if I use dr diff 1" relocation kit and custom cut the 8 3/4 axle ?
Thanks.

When you say "custom cut", do you mean narrowing the axles and housing?

[kape1]

Hi, Is it possible to fit 15x10 rims with 3,38 backspace under -71 Cuda if I use dr diff 1" relocation kit and custom cut the 8 3/4 axle ?
Thanks.

When you say "custom cut", do you mean narrowing the axles and housing?

Yes, narrowing the axles and housing,  But I sent the question to Cass (dr diff) also and got this answer: "Unfortunately, that combination would require a 51" housing with 44" spring perches on center.  The spring perches would end up on top of the housing ends."  So It's not possible.

[Mrbill426]

Found this; maybe it is helpful.

https://www.tyresizecalculator.com/

[DAYLEY/CHALLENGER]

Ok....made the plunge.   I want to post along as I do this.  So to get started.......here goes.

Actually had the wheels for a while. 15 x8. 

235/60/15 for the front and 255/60/15 for the rear. 

Haven't put them on the car yet.   Wanting to post some measurements first.  In the next posting.

[DAYLEY/CHALLENGER]

Charts are all good and all but I believe that pics tell a better story. 

235/60....width measurement, sidewall to sidewall. 

255/60.... same set up.  And then the height diff....

And one with the center.

[DAYLEY/CHALLENGER]

Well , pulled the old tires off and put on the BF Goodrich.  Some size differences shown.   Old size, P245/60/14. 

[Waco]

Air shocks here too !

What are your tire/wheel specs?

[DAYLEY/CHALLENGER]

Wheels are 15 x 8......... front tires are the 235/60/15  and the rear are 255/60/15.  The car has the original rally wheels but, I like these better.......

[challengermaniac]

Not my car, although owner noted wheel and tire sizes: 
Year One Rallye Wheels:  8 x 17" with 4 1/2" BS Front and 9 x 17" with 5" BS Rear
Tires are 225/50R 17" Front and 255/50R 17" Rear.

[torredcuda]

Hankook Ventus V12 245/45/18 and 275/40/18 with US Mag U111 Rambler textured gunmetal grey 18x8 and 18x9.5.  The stock spring location gives abut 3/4" room, fits inside the rear quarters with no rolled lips.  Fronts also fit perfect, no rolled lips, not rubbing on frame.

Do you know what offsets?   @303 Mopar

[torredcuda]

My original combo - American Racing 15x 8 1/2 with 255/60/15 BFG and 15 x 7 with 215/65/15, I also ran a 235/60/15 BFG Drag Radial on them (255 size wasn`t available in drag radials).

[torredcuda]

I wanted to change the wheels and found these used from a buddy off his Challenger, 235/60/15 and 255/70/15. I like the 60 in back better as the 70 looks a bit too tall.

[gzig5]

I've go the same 255/70-15 on the back of mine and I don't mind it.  Looks a lot better than the 14" 225/70 that was on before.  I kind of feel like the height offsets the lack of width and really fills up the wheel well.  I will probably be going to an 18" 295-305 wide but I don't want a tire sidewall that is too short, which limits selection.