Squared OEM rear wheel setup on 245/40 r 19 tires

[Payn31]

Hello,

I am trying to upgrade the wheels on my 2019 Kia Stinger Premium 2.0T AWD with 4 oem rear GT wheels. I am running into issues with the fronts rubbing agents the struts. I am running 245/40 r19 tires on the wheels as well. Does anyone have any recommendations on the following:

1. Recommendations on which wheel spacer sizes to use?
2. Should I use bolt on or stud extended spacers?
3. Should I be concerned about transmission issues with this setup as my car is a 2.0T awd?

Thanks in advance

 

[Snicklefritz]

I am no expert on this at all, but from my reading on here over the years, hardly anyone has gone to the trouble of getting the +46.5 rear GT wheels to fit in front. If you are determined to do it, then my expectation is that longer studs should be used to accommodate at least 10mm spacers. That will move your offset out to c. +36.5. Whether or not that clears I have no idea with the OEM 8.5/19 wheels, but my GT1 uses an aftermarket 8.5 wide wheel in front with a +40 offset, so, you might be able to get away with that much reduction in offset and maybe not need to replace the studs with longer ones. I am interested in what others say about this. Particularly @Volfy and @Thomby, as both have weighed in recently on the topic of wheels and offsets, etc.

 

[Volfy]

My recommendation is to get rid of OEM rear wheels. Not only are they even heavier than your OEM 18s, the offset is wayyy off for the front. To fix that, you'd need at least 8mm spacers, which are hard to find. 10mm or 12mm are more common, but anything thicker than 5mm you'll need extended studs.

2.0T doesn't make a lot of TQ/HP, so the last thing you want to do is to burden the drivetrain with even heavier rotational inertia and unsprung weight. If you really must have 19's for the looks, at least get some lightweight rotary forged aftermarket wheels, with proper offset.

 

[Thomby]

Assuming the 2.0 matches the 3.3 in wheel hub location & clearance, putting the rears (8.5" +46.5 offset) up front (8" +34 offset) adds 1/4" in wheel width inside & out, then shifts the wheel inward a half inch (12.5mm higher offset).

So your inside edge is 3/4" further inward of stock, and your outside edge is 1/4" inward. A hypothetical 6.25mm spacer would put the outer edge of the wheel back in its stock location, with the extra 1/2" in wheel width all added to the inside edge.

We also know that for stock wheels, a 20mm spacer (0.8") brings the outer edge about as flush/aggressive as you'd want to go. Since we're 6.25mm more tucked in with rear wheels up front, that would mean a max front spacer of 26.5mm (so 25mm), to match a 20mm rear spacer.

Or you could go a little more conservative with 20mm front / 15mm rear, or 15mm rear / 10mm front. From 15mm upward you can get studded spacers (spacer bolts to stock lugs, wheel bolts to spacer), but a 10mm will just be a flat pass-through and I don't know if our stock lugs are long enough.

Up to you but I'd probably go with 20mm front, 15mm rear (both bolt-on). And I'd recommend a bit of anti-seize on the face of the spacer so it doesn't weld itself to the hub in a few years.

 

[D.J.]

1. Recommendations on which wheel spacer sizes to use?
2. Should I use bolt on or stud extended spacers?
3. Should I be concerned about transmission issues with this setup as my car is a 2.0T awd?

1. I don't recommend this set up whatsoever
2. You definitely want to use hubcentric bolt on spacers.
3. No, no issues whatsoever when using the same diameter rear and front

 

[Payn31]

Appreciate all the input everyone! After thinking it over, I’m going scrap this setup and either look for a better overall option or just find the proper OEM front wheels to make it work the right way. Definitely don’t want to deal with unnecessary fitment issues or potential issues with the car itself. I will keep the group updated as I figure out what to do next.