[Gila Hemi]

So I've changed my mind and decided to put US Mags on my 2014 Limited Edition R/T shaker and there are no vendors here that carry them. That said, I need to know the exact parameters, such as offset and back spacing, to order them because these will be custom forged wheels. I'm going with 18-8 front and 18-9.5 rear, know the bolt pattern is 5-115, but nothing else. Can someone here please provide me with the info I need to make this happen?

 

[BossHoss85]

What size tires first off? Most 305s require a 10.5 in wheel at least. Dont wanna do that bulging nonsense. I am waiting on 18s for my scat pack challenger but discount tire made some mistakes so i havent gotten them but ill share my research. Im going to do an 18x9.5 or 10 front i cant rememebr atm and an 18x11 rear. I went with +25mm offset to clear a 305 nitto nt555r. I am keeing the o.d. of the wheel the same front and back so not to throw off the speedo and to get extra sidewall to help hook up. In the front im going to try to run a 295. I was told it should clear. I think its a +22 mm offset. If it doesnt ill run a 275 or 285 with possibly a different o.d. the nt555 that had a stock o.d. and fit an 18 was discontinued.

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[Gila Hemi]

Tire size is irrelevant. All I need is the offset and back spacing. Thanks

 

[BossHoss85]

Well your tire size will dictate the offset you need. Unless youre asking for stock offset which i THINK is like 20 to 22mm at most.

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[Gila Hemi]

Well your tire size will dictate the offset you need. Unless youre asking for stock offset which i THINK is like 20 to 22mm at most.

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That is exactly what I need, plus the back spacing.

 

[Slidd]

All 20-inch OEM wheels that's not on an SRT or Scat Pack:

8 inches wide
24 mm offset
5 x 115 mm bolt pattern
71.5 mm bore size



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[Gila Hemi]

Now that I've completely fried my noggin trying to figure this out, this is what I've come up with. Now the question is, will it work? If not, what needs to be changed?

Front
245/55ZR18 tire
18-8 wheel
24 mm offset
126 mm back spacing

Rear
295/45ZR18 tire
18-9.5 wheel
14 mm offset
135 mm back spacing

 

[Slidd]

I don't think they'll hit anything but the rears will stick out a little.

I used this converter to give you an idea.

https://tiresize.com/wheel-offset-calculator/




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