4BW aftermarket wheel upgrade to 19” questions

[Per4mer08]

Hey guys, figure I’ll post this question here as the group is far more likely to have the expertise I’m looking for.

I want to get 19” wheels for my 4BW. Specifically Stance SF10’s. I want to maintain near stock clearances though I am ok with, perhaps prefer to fill the wheel well a bit more and have the wheel flush with the fenders.

The stock tire combo is;
Front: 255/35ZR18
Rear: 275/35ZR18

To maintain near exact tire size/height in 19” would be;

Front: 255/30R19
Rear: 275/30R19

Where I get lost is in wheel offset and tire choices that aren’t exactly the above choice.

Stance Wheels actually shows a CT4V with the wheel I want on their website but the wheel fitment and tire that I think I see is different and I’m concerned about clearance with turning.

Attached are the promo photos from Stance and the Offset they supposedly used. What does everyone think regarding clearance and if there is a better choice for tire size and/or offset?

Lastly, for those that have gone up to 19” wheels what size wheels (width, offset) and tires did you go with and is there any rubbing? What tire brand and how’s the ride quality with the shorter sidewall?

 

[piranha971]

The wheels will poke out a bit less in the front and a bit more in the back. They will work fine.

 

[brewski]

Hey guys, figure I’ll post this question here as the group is far more likely to have the expertise I’m looking for.

I want to get 19” wheels for my 4BW. Specifically Stance SF10’s. I want to maintain near stock clearances though I am ok with, perhaps prefer to fill the wheel well a bit more and have the wheel flush with the fenders.

The stock tire combo is;
Front: 255/35ZR18
Rear: 275/35ZR18

To maintain near exact tire size/height in 19” would be;

Front: 255/30R19
Rear: 275/30R19

Where I get lost is in wheel offset and tire choices that aren’t exactly the above choice.

Stance Wheels actually shows a CT4V with the wheel I want on their website but the wheel fitment and tire that I think I see is different and I’m concerned about clearance with turning.

Attached are the promo photos from Stance and the Offset they supposedly used. What does everyone think regarding clearance and if there is a better choice for tire size and/or offset?

Lastly, for those that have gone up to 19” wheels what size wheels (width, offset) and tires did you go with and is there any rubbing? What tire brand and how’s the ride quality with the shorter sidewall?

Have you looked at Apex? I'm super impressed with the wheels they make and JJ is very helpful on fitment. JJ handles the wheels for GM cars/fitment. They have a 19x9.5 et22 and 19x10.5 et45 which should fit just like my 18s (18x9.5 et22 and 18x10 et42). The stock tires fit well on a 10in wheel, but I plan on going 10mm wide F & R on tires when I need replacements (stock is 0.5in narrower than what I got from Apex)

https://apexwheels.com/vehicles/cadillac/ct4-v-blackwing/ct4-v-blackwing

The photos are the GM spec PS4s that came with the car. I plan going to 265s and 285s
Front offset

Rear offset

If you're not a fan of Apex, hopefully these photos at least help you grasp how the offsets will fit.

 

[ngoni]

I agree go with Apex. They have tested fitments for the car and the tire sizes you want to run and they're damn good wheels.

 

[nix6speed]

Leave the Stance wheels for Hyundai Sonata owners.