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Discussion Starter #1
The stock tire size for the 2017 Challenger GT is: 235/55/19 (which I have on there now)
I want to look at getting either 20x8.5" wheels (most likely) or possibly 20x9" wheels.

According to the tire calculator, it recommends 245/50/20s for replacement. That seems
narrow to me. I typically like the sidewall to be flush with the wheel. Not curving away from
the wheel. 3 Quick questions below:

1. Can anyone chime in with their tire sizes and or pics?

2. Or does anyone know how WIDE a tire you can run on an 8.5 and 9" rim?
I remember my old SVT Cobra had 275s on a 17x9" wheel, but I'm pretty sure you can't fit
those on an 8.5" safely/correctly.

3. Lastly, how is ride quality with 20" wheels? Any rubbing issues, or rough riding?
This is my daily driver, and I'm debating if 20" wheels might look better, but ride like shit.

988380
 

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Be aware, those 19" wheels are +55 offset. Some members have put non AWD wheels on their GTs and they look good. That said, you could put a 275/40R20 on a 20x9 wheel, and it will be just 1.7% shorter

988382


A 274/45R20 would only be 1.7% taller, but not many choices in tires for that size. Lots of good choices in 275/40R20

Challengers that come with 20" wheels have 245/45R20 )275/45R20 and 315/35R20 are all the same height), so the height wouldn't be an issue. Depending on offset they will stick out more, so you could end up flush with the wheel wells, or a little over


A Guy
 

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Discussion Starter #3
Hmm, I didn't consider the offset of the 19 vs 20s. I was debating picking these up (pic below).
I'm not sure how that will fit/look different than the stock 19s on there now. I'll have to maybe
research this further.

And then the question is: can you fit a 275/40/20 on a 8.5" wheel? I think not, correctly.


988383
 

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Generally, you'll find recommended width for 275/40R20 is 9"


I've seen pics on here of them on 8" wheels, so they will fit, just not recommended

I know a member got some factory reproductions that were high offset (45? 55?) but I can't find the thread now :(

A Guy
 

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Discussion Starter #5 (Edited)
This is a handy calculator I found in another thread. It seems that the +40mm offset on the aftermarket
wheels above I'm looking at should fit just fine in 245/50/20, but looks like they will stick out 20mm farther.
I'll have to play with this a bit.



988384
 

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But selection at 245/50R20...


A Guy
 

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Discussion Starter #8
So here is something i'm running into that I'm questionable about.
It looks like the factory specs of the 2017 GT wheels is: 19x7.5" Wheel with a 5x115mm bolt pattern, +55mm offset.

A lot of the wheels I'm looking at (including the pic below from shopping with Discount Tire) seems to only offer a 5x114.3mm bolt pattern.
Its close, but does anyone know if there is an adapter or something that is required, or these still bolt right up?


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988428
 

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I've have 275-40-20 on back and match 245-45-20 on front. 9" SRT rims. Look like they were meant to be there. I'm sure wider tires would be different.
 

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So here is something i'm running into that I'm questionable about.
It looks like the factory specs of the 2017 GT wheels is: 19x7.5" Wheel with a 5x115mm bolt pattern, +55mm offset.

A lot of the wheels I'm looking at (including the pic below from shopping with Discount Tire) seems to only offer a 5x114.3mm bolt pattern.
Its close, but does anyone know if there is an adapter or something that is required, or these still bolt right up?
They will bolt right up, but there is a lot of debate about whether it's truly safe or not... Personally, I would stick with 5x115 wheels, but there are many people that do run 5x114.3 wheels. With my family in the car, I personally don't feel that it's worth the risk.
 
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