Wider aftermarket wheel/tire advise.. (B-BODY REAR/1" LEAF RELOCATE)

[FSHTAIL]

Hi everyone.   

I've been on here for a few hours searching around with very little reassurance on what to do..

I have a Plymouth Cuda, not sure if that matters much for this.. 
B body 8 3/4 rear w/Dr Diff 1" relocate.

Rear:
I'm looking to do a 17x10     
Looks like maybe a 4.5 or 5" bs might work? 
I love that deep dish look out back..
I'm not sure what companies hav 17x10's with the right backspacing.. 

Rear Tire...
275-50-17
295-45-17 possibly?     
The quarter panel wheel lips were trimmed before paint.. 

Fronts:

I'm not even sure what I can run..     17x8?
I'd like to get the most tire and wheel under it as I can without rubbing when turning...

Can you post some pictures with your specs to see if someones running a setup with the look I've got in mind..
I'm a visualist.....

I asked a few questions on posts where the setup
looked killer and messaged the user with no replies..

Thanks

[Chryco Psycho]

the 15" tires will have more sidewall bulge than 17 "
Personally I dislike the 275 /60 tire , it is too tall
the 295 will fit just fine with the spring relocate & I would use the 295/  50
the 305 in a 17 " should just fit as well but the rim backset needs to be perfect
I am using 275 /50 /15 Nitto drag radial on an 8 " rim with the springs in the stock location

[Brads70]

On my Challenger with the b-body rear end  and offset shackles I'm using 18x11 on all 4 corners, rear tires are 295/40/18 out back rear rim offset is 5.5"  front is irrelevant, as I made wide body fenders to suit the tires size but they are 315/30/18 with 5" offset .

[7212Mopar]

275/40/17 with 5" BS fit a standard E body 8-3/4 in my Challenger with space to spare. Need more than 5" BS if going wider. 50 series wide tire will be tall and should check your gearing. Better to use 10" wide wheel if going 295 and above.

[HP2]

15x10 and 17x10 with 5" backspace will work fine for the rear. 295-315 width in 60 or lower series ratio should fit without issue.

Front will depend on if you use 15 or 17.  The larger diameter of the 17 rim will allow a different backspacing and subsequently, wider tire potential.  In 15" diameters, 4.75" backspace is the maximum you can fit before you have ball joint interference.  But this is a custom backspace and the best you may be able to find is 4.5". Of course you could get a 5" backspace rim and use a .25" space. With a 15x8, you could get a 255 width in there and maybe only have to roll the fender lip.  With a 17x8 or 9, you  may be able to get up to a 275 with a 5, 5.5, or 6" backspace.

[ledphoot]

I am running nitto 255/45/17 front 17x9 4.5 bs, and 275/50/17 on a 17x10 5"bs wheel.. It's tight but it works and the sidewall height looks decent... I am trying to figure out how people squeeze 295's in this wheel well, I don't believe I have the room.

[dodj]

You will probably end up going with 17" tires. There are no good street tires (unless you think BFG is a good tire) available in 15".
I have 255 17's up front on a 17x9 rim with 5" bs and 315 17's in the back with 6 5/8" backspace but had to add a 5mm spacer to centre the wheel. But my back spacing won't work for you because I have an ebody rear. I have a Dr. Diff 1.5" offset shackle kit.

Backspacing on the rear will depend on where your axle flange is in relation to where your springs are mounted. So you will need to measure from the axle mounting flange to your springs. Then subtract 3/8 of an inch. This will give you a backspace to aim for. The exact BS may not be available so thats where you juggle what you want with what is available and/or using spacers.

You need to keep the backspacing for the front in-between 4.5" and 5". Closer to 5" works best IMO.

This is how it looks.

Chris, are you going to be at Mopars in the Park June 1st?

[ledphoot]

I may have to get some offset spring hangers and try to squeeze some 315's in that Cuda's wheel well.. I can see 295's with the offset hanger and correct backspace no problem. As it stands right now I am tight on both sides with 275/50/17.. It will work / be safe, but if I tried to go bigger my tires would be too close to the springs in their stock location.

Interestingly I had these same tires on the challenger and there wasn't enough room. Less than 1/8" clearance from springs to tires... I was pleasantly surprised by the fit when I put them on the Cuda.

315 would be INCREDIBLE Your car looks great.

[FSHTAIL]

What brand wheels are you using?

I am running nitto 255/45/17 front 17x9 4.5 bs, and 275/50/17 on a 17x10 5"bs wheel.. It's tight but it works and the sidewall height looks decent... I am trying to figure out how people squeeze 295's in this wheel well, I don't believe I have the room.

[FSHTAIL]

17x9 up front?
No rubbing?


I'll be at Mopars in the park.   

You will probably end up going with 17" tires. There are no good street tires (unless you think BFG is a good tire) available in 15".
I have 255 17's up front on a 17x9 rim with 5" bs and 315 17's in the back with 6 5/8" backspace but had to add a 5mm spacer to centre the wheel. But my back spacing won't work for you because I have an ebody rear. I have a Dr. Diff 1.5" offset shackle kit.

Backspacing on the rear will depend on where your axle flange is in relation to where your springs are mounted. So you will need to measure from the axle mounting flange to your springs. Then subtract 3/8 of an inch. This will give you a backspace to aim for. The exact BS may not be available so thats where you juggle what you want with what is available and/or using spacers.

You need to keep the backspacing for the front in-between 4.5" and 5". Closer to 5" works best IMO.

This is how it looks.

Chris, are you going to be at Mopars in the Park June 1st?

[GoodysGotaCuda]

I have tire specs listed in this thread: https://forum.e-bodies.org/wheels-tires-brakes-suspension-and-steering/12/goodysgotacuda-wheel-and-tire-specs/10283/

295 rears with stock wheel wells and axle. I'm a big fan of tall tires, these are 27" front and 28.5" rear. The mentioned 305/30/18s are 25.2" tall, which would change the look substantially. It just depends on what you're looking for.

[ledphoot]

What brand wheels are you using?

I am running nitto 255/45/17 front 17x9 4.5 bs, and 275/50/17 on a 17x10 5"bs wheel.. It's tight but it works and the sidewall height looks decent... I am trying to figure out how people squeeze 295's in this wheel well, I don't believe I have the room.

American Racing Torque Thrust II's

[nsmall]

Running a 18x8 up front and 18x9.5 in the rear.  Let me know if you want more details.

[dodj]

 

17x9 up front?
No rubbing?


I'll be at Mopars in the park.   

No rubbing.
5 inch bs
I'll keep a look out for your car on Saturday!

[FSHTAIL]

Tire sizes and backspacing specs?

Running a 18x8 up front and 18x9.5 in the rear.  Let me know if you want more details.