Wheel/size/offset and tire/size/profile...can be confusing.

[Uzurk]

Your options of 255/35 and 295/30 would work well.
Best chart you can use is:
2020 Kia Stinger GT1 Tires
If you are worried about width of the wheel then keep your eye on the numbers in the "wheel" part.

Thank you, I was using the wrong part of that site. Looks like the 295 will be too wide for 9.5in wheel.

 

[YOWStinger]

This is the chart I used, and I did have it set to 19:

I'd go for the 245/40 and 275/35 fill out the wheel wells a little bit

 

[WA_STNGR]

I'd go for the 245/40 and 275/35 fill out the wheel wells a little bit

That's what I run. Looks perfect IMO and I'm lowered an 1" too.

 

[Uzurk]

I'd go for the 245/40 and 275/35 fill out the wheel wells a little bit

Yeah, that looks like a good set up. I am just about to install Ark GT-F lowering springs, think I will have an issue if I add slightly more tire diameter into the mix? My guess is the extra .5in of tire (which is only .25in if we think about the half that could interfere with the fender) wont make a huge difference.

 

[Uzurk]

That's what I run. Looks perfect IMO and I'm lowered an 1" too.

That's perfect, you answered my question. I am going to be lowered too.

 

[WA_STNGR]

That's perfect, you answered my question. I am going to be lowered too.

You'll be good, I'm running the same springs you'll be installing.

Here's my wheel specs if you're curious:
19x8.5 +33
19x10 +40

 

[Uzurk]

You'll be good, I'm running the same springs you'll be installing.

Here's my wheel specs if you're curious:
19x8.5 +33
19x10 +40

Nice. My plan was 19x8.5 +35 and 19x9.5 +35. Should end up looking VERY similar.

 

[CoconutRob]

You'll be good, I'm running the same springs you'll be installing.

Here's my wheel specs if you're curious:
19x8.5 +33
19x10 +40

Do you think +35 front would work without rubbing also +45 rear?

 

[WA_STNGR]

Do you think +35 front would work without rubbing also +45 rear?

The fronts will be fine, I think @YOWStinger is running 20x9 +35 and it was really close to the strut, but it fit. So if a 9" wide wheel at +35 fits, an 8.5" +35 should fit just fine. The rears should be fine as well, there's a guy running 19x11 +50 and a 295/30 tire and he said it fits without any rubbing.

 

[YOWStinger]

The fronts will be fine, I think @YOWStinger is running 20x9 +35 and it was really close to the strut, but it fit. So if a 9" wide wheel at +35 fits, an 8.5" +35 should fit just fine. The rears should be fine as well, there's a guy running 19x11 +50 and a 295/30 tire and he said it fits without any rubbing.

I'll have final results tomorrow

 

[Uzurk]

Do you think +35 front would work without rubbing also +45 rear?

Not sure about the rears, but according to this submission on the FitmentIndustries site, 19x8.5 +35 in the fronts are fine:
2019 Kia Stinger Niche Gamma Eibach | Fitment Industries

 

[WA_STNGR]

I'll have final results tomorrow

Woot! Been a long time coming.

 

[YOWStinger]

Here we go!

20x9+35 245/35r20
20x10.5+45 285/30r20
Michelin Pilot AS3+
Eibach Prokit+
Variant Krypton Triple Bronze

I don't have measurements from anyone else but my car definitely sits lower in the back than any other car on eibachs I've seen.

Rubs the rear fender liner slightly in the back under compression. It's very minor and could be ignored but I'm going to heat it up and shape it away, the liner bulges out a little but inside the fender. This is probably due to the odd ride height I've got back there, I might need @Kamauxx to compare measurements to be sure

I have no issue with the rubbing, it's easily addressable and minor, and I love the fitment, it looks perfect in my eyes.

I could/should have gone with a lower offset than 35 in the front, there is almost no clearance with the strut (2-3mm), but no rubbing up there. +30 would be more flush with the fender, and there's the space for it, +32 would probably be the ideal, but thats just personal preference.

 

[Hockster]

Here we go!

20x9+35 245/35r20
20x10.5+45 285/30r20
Michelin Pilot AS3+
Eibach Prokit+
Variant Krypton Triple Bronze

I don't have measurements from anyone else but my car definitely sits lower in the back than any other car on eibachs I've seen.

Rubs the rear fender liner slightly in the back under compression. It's very minor and could be ignored but I'm going to heat it up and shape it away, the liner bulges out a little but inside the fender. This is probably due to the odd ride height I've got back there, I might need @Kamauxx to compare measurements to be sure

I have no issue with the rubbing, it's easily addressable and minor, and I love the fitment, it looks perfect in my eyes.

I could/should have gone with a lower offset than 35 in the front, there is almost no clearance with the strut (2-3mm), but no rubbing up there. +30 would be more flush with the fender, and there's the space for it, +32 would probably be the ideal, but thats just personal preference.

View attachment 39329 View attachment 39330 View attachment 39331 View attachment 39332 View attachment 39333 View attachment 39334

Is that one rotor scored?

 

[YOWStinger]

Is that one rotor scored?

Great question, didn't notice til you pointed out, could be that dreaded build up everyone has been complaining about, I'll have the shop take a look at it

 

[Kamauxx]

Here we go!

20x9+35 245/35r20
20x10.5+45 285/30r20
Michelin Pilot AS3+
Eibach Prokit+
Variant Krypton Triple Bronze

I don't have measurements from anyone else but my car definitely sits lower in the back than any other car on eibachs I've seen.

Rubs the rear fender liner slightly in the back under compression. It's very minor and could be ignored but I'm going to heat it up and shape it away, the liner bulges out a little but inside the fender. This is probably due to the odd ride height I've got back there, I might need @Kamauxx to compare measurements to be sure

I have no issue with the rubbing, it's easily addressable and minor, and I love the fitment, it looks perfect in my eyes.

I could/should have gone with a lower offset than 35 in the front, there is almost no clearance with the strut (2-3mm), but no rubbing up there. +30 would be more flush with the fender, and there's the space for it, +32 would probably be the ideal, but thats just personal preference.

View attachment 39329 View attachment 39330 View attachment 39331 View attachment 39332 View attachment 39333 View attachment 39334

Sorry man, I don't have the car any more. Mine was lower in the back than front though, for sure.

 

[YOWStinger]

Sorry man, I don't have the car any more. Mine was lower in the back than front though, for sure.

 

[Cadimac705]

Trying to use the tool and not fully sure. Anyone ever run a +25 front and rear on 19x8.5f 19x9.5r. If it doesnt work does anything other than a +40 work?

 

[YOWStinger]

Trying to use the tool and not fully sure. Anyone ever run a +25 front and rear on 19x8.5f 19x9.5r. If it doesnt work does anything other than a +40 work?

The quick answer is 8.5+25 would be pretty flush, but I wouldn't go lower than 8.5+25. 9.5+25 is probably going to poke out a bit in the rear. 9.5+35 would be a better fit.

Offset is a function of width, it's the distance from the centerline to where the hub mounts to the wheel. The offset and width are the 2 primary specifications that dictate how close the rim comes to the fender and to suspension components.

OEM wheels are traditionally pretty inset to allow for things like tire chains and throwing mud and dirt across the door panels.

If you're not overly concerned, there's a pretty wide range of what will "fit" on the car. Most will look "pretty good". When you're trying to choose width and offset, you need to know what you're trying to accomplish first.

I would say the bar is set at around 9+30 (I would actually go for 9+32 if I'm being picky, 9+35 is very close to the suspension) in the front, 10+40 in the back. For every .5" added to the width, add +5 offset. For every .5" removed, drop offset by -5. (Technically it's 6.35mm offset, but you're not going to find exactly that from off the shelf rims).

Front: Be aware of the clearance between spokes and brakes (on Brembo cars) and between the rim and strut. There is no OEM camber adjustment up front.

8.5+25 to 8.5+35 (8.5+40 is wheel dependent and may not clear the brake).
9+30 to 9+35 (9+35 is wheel dependent, most will fit, but brake and suspension clearance is tight)

Rear: There is quite a bit of suspension clearance in the back, but most wheel manufacturers don't make high enough offset for us to take advantage of that. There is quite a bit of OEM camber adjustment in the rear. The lower end of the offset spectrum for each width will be very flush, the tire could possibly poke a little bit (which I think looks great, but YMMV). You're going to have a really hard time getting offsets higher than +50 in the rear so I stop there.

8.5+25 to 8.5+35
9+30 to 9+40
9.5+35 to 9.5+45 (I would stay closer to 9.5+35)
10+40 to 10+50
10.5+45 to 10.5+50
11+50

The next consideration for fitment is tire size, #1 priority is matching diameter between front and back, then making sure the tire width and profile fits (both of which are a function of overall diameter).

Our fenders are already "rolled" from the factory (i.e. there is no metal from the fender that protrudes into the fender well) which is a huge plus. However, our fender liners do stick out a little bit just inside the fender.

You can find my fitment in a previous post, I'm running an oversized diameter and personally love my fitment, it's exactly where I want it, but that little bit of liner that rubs out back under hard compression (which I'm hoping to fix by increasing my rear damping on my ECS suspension with the Mando ECS10, I've always found the ass end of the Stinger to be a bit floaty, so I'm hoping to fix that too). I'm planning on playing with -3 and -5 spacers up front to nudge it to right where I wanted it.

 

[Cadimac705]

The quick answer is 8.5+25 would be pretty flush, but I wouldn't go lower than 8.5+25. 9.5+25 is probably going to poke out a bit in the rear. 9.5+35 would be a better fit.

Appreciate the feedback. I went with 9.5 squared on Niche but didnt like how stretched the tires looked @ 255s. I have alot of experience on offsets just not so much staggered or big brakes (Truck life was easy) maybe ill just spend a little extra on forged because i cant find hardly anything i like on mainline at the moment