[BlackenedSVT]

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.

 

[A Guy]

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

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

GT Specific Rim Question

Looking at upgrading the factory wheels on my GT. I've narrowed it down to two different rims: MMR VP5's in gunmetal with 35 mm offset: MRR VP5 20x9 5x115 Gun Metal Wheels Rims (Set of 4) | eBay Or Replica Alloy: Replica Wheel Charger SRT8 in Matte Black 20mm off set: Wheel Details -...

www.challengertalk.com

A Guy

 

[BlackenedSVT]

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.

 

[A Guy]

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

Helpful Tire Info - BUDNIK

www.budnik.com

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

 

[BlackenedSVT]

Rim & Tire Size Calculator. Custom Offsets

Tire Tech Information - The Wheel Fitment, Tyre Stretch, Rolling Radius and Speedometer Error Calculator. Play with specs, try different settings, compare results

www.wheel-size.com

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.

 

[A Guy]

But selection at 245/50R20...

245/50R20 Tires

245/50R20 tire conversion. Convert 245/50R20 tire size to inches and compare prices on available tires from the top brands online.

tiresize.com

A Guy

 

[BlackenedSVT]

Whoops yeah meant to type: 245/45/20 =)

 

[BlackenedSVT]

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?

 

[Yumalee]

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.

 

[jtrosky]

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.