2022 CT4V wheel size?

[zonearc0]

I'm trying to figure out the wheel sizes so I can hunt for wheels in a style I like.
I believe the front is 18x8.5 and the rear is 18x9.5? If so, does anyone know the offset and can confirm the bolt pattern?

I assume I would need to order custom wheels ... these are pretty unique.

 

[zonearc0]

I'm trying to figure out the wheel sizes so I can hunt for wheels in a style I like.
I believe the front is 18x8.5 and the rear is 18x9.5? If so, does anyone know the offset and can confirm the bolt pattern?

I assume I would need to order custom wheels ... these are pretty unique.

 

[zonearc0]

I called a dealer and they said it should be:

Front
18x9
Offset 32

Rear
18x9.5
Offset 32

 

[Kanetch]

I called a dealer and they said it should be:

Front
18x9
Offset 32

Rear
18x9.5
Offset 32

The sizes are correct but offsets are 28 front and 48 rear. Search for a thread on here called Winter wheels and tires.

 

[zonearc0]

Were they correct that its 5x120?
I read that the barrel dimensions are important too with the size of the Brembos. Apparently not all 18x9" wheels would fit? Seems like a massive hassle!

 

[zonearc0]

I've been going through every comment on the winter tires thread and I can't seem to find the exact hub bore either. My thought is if I can't get a 28mm front, but I can get a 30mm, I can use a 2mm hub centric spacer to resolve the issue with no detriment to the car and handling. But, I need to know the bore.

 

[zonearc0]

Front
18x9 28mm Offset 5x120 72.56 Bore
Rear
18x9.5 48mm Offset 5x120 72.56 Bore
You will likely need spacers to get it correct but don't go more than a few mm otherwise you'll run out of thread to tighten them down the 7 turns you need to at 150lbs.
I'm going to order 31mm front w/ 3mm hub centric spacers and centering rings, and then 45mm rear and leave them alone. 3mm wider won't affect the rear.

 

[Kanetch]

Front
18x9 28mm Offset 5x120 72.56 Bore
Rear
18x9.5 48mm Offset 5x120 72.56 Bore
You will likely need spacers to get it correct but don't go more than a few mm otherwise you'll run out of thread to tighten them down the 7 turns you need to at 150lbs.
I'm going to order 31mm front w/ 3mm hub centric spacers and centering rings, and then 45mm rear and leave them alone. 3mm wider won't affect the rear.

5x120 is correct, the 72.56 bore BMW sized wheels work. Our bore is either 66.9 or 67.1mm. I found conflicting info on this so I am not using hub centering rings. The 60 degree conical lugs will center the wheel as long as you or installer are careful. I am using the APEX brand EC7 wheel in the exact sizes you mention including the 3mm front spacers. To make sure I had enough thread engagement using the slightly thicker wheels and especially with the front 3mm spacers, I used Gorilla lugs 26148ETBC nuts that have an extended thread design.

 

[zonearc0]

Yep. I'm going to use the Apex EC7 as well, with centering rings.
Thanks for the link to the lugs ... I'll snag some of those as well! Thank you!

 

[DustinEarnhardt]

5x120 is correct, the 72.56 bore BMW sized wheels work. Our bore is either 66.9 or 67.1mm. I found conflicting info on this so I am not using hub centering rings. The 60 degree conical lugs will center the wheel as long as you or installer are careful. I am using the APEX brand EC7 wheel in the exact sizes you mention including the 3mm front spacers. To make sure I had enough thread engagement using the slightly thicker wheels and especially with the front 3mm spacers, I used Gorilla lugs 26148ETBC nuts that have an extended thread design.

@Kanetch That looks really good!!

You should post this pic over in the Blackwing forum so others don't miss it. I think this section is for the non-BW CT4-V & CT5-V.

 

[zonearc0]

Here's what I ended up going with:

18X9" ET31 APEX EC-7 BMW WHEEL
18X9.5" ET45 APEX EC-7R FORGED BMW WHEEL
APEX 3MM BMW SPACER KIT
GM TPMS SENSORS 13538760
COYOTE CENTERING RINGS 72-6690M


In summary, this sets me up with the right size wheels front and rear.
It provides the centering rings since the Apex wheels have a larger bore.
It provides a spacer for the front which puts the front wheels at the exact 28mm offset of factory.
It widens the rear track width by 3mm, which is so negligible it won't matter, and it also won't interfere with anything on the car which is perfect.

Other notes:

• The front and rear wheels are virtually identical, although the rear EC-7R wheels are much stronger design as they are Apex's Forged wheel. Won't matter. In a perfect world I would have done Forged front and rear, but they don't offer a Forged front in Bronze and that was my selection. If you want matching Forged you have to go with anthracite, silver or black in your order.
• I got two different recommendations on lug sizes from Gorilla. I ordered both and will see what works best. Some people report that 26148ETBC (long lugs) are best, others report that they were able to get the wheel torqued down with 26144BC (same but slightly shorter). I'll report back findings since I'll have both in hand.
• My goal was to stick with factory wheel sizes because I want to maintain the geometry as well as continue use of my existing factory tires which have a grand total of 2500 miles on them so far. Of course, you could do different sizes if you purchased tires at the same time.
• If the Apex wheel works, it'll mean two things:
  • You can do nice wheels without doing a custom 3 piece. Most of the solutions in the custom realm will run you $2000 per wheel.
  • Everyone and their grandmother will be running Apex wheels on their Blackwing soon, so that means it won't be as special. Oh well ... still looks better than factory.

 

[1Evil55]

Not sure of your location but based on the numbers here I doubt you'd need to worry about running into another BW on the street with the same wheel as you. Looking forward to seeing installed pics.

 

[zonearc0]

Other than Apex, anyone have any other vendors they like for wheels that offer them pre-made, rather than 2-3 piece? The 2-3 piece ones are typically in the $2200 range, so I'm curious who else Blackwing owners should be looking at.

 

[WONT TAP]

I measured the hub diameters at 66.7 mm. Your mileage may vary.

We do have longer wheel studs for those who want/need to run thicker wheel spacers:

Tapout Tuning Wheel Studs (set of 10) - Tapout Tuning

These press-in wheel studs are 14 x 1.50 mm RH thread. Overall length is 2.5”, providing ¼” more threads than OEM wheel studs. Sold in sets of 10.

www.tapouttuning.com

 

[Ivy1Le]

I measured the hub diameters at 66.7 mm. Your mileage may vary.

We do have longer wheel studs for those who want/need to run thicker wheel spacers:

Tapout Tuning Wheel Studs (set of 10) - Tapout Tuning

These press-in wheel studs are 14 x 1.50 mm RH thread. Overall length is 2.5”, providing ¼” more threads than OEM wheel studs. Sold in sets of 10.

www.tapouttuning.com

Do you happen to know maximum spacer thickness that will still allow minimum thread engagement on the stock studs?

 

[WONT TAP]

I can't remember for sure, and didn't take notes regarding that. I do know that 1/8" (3 mm.) is fine, and 3/8" (10 mm.) is too much. So the threshold would be in the middle somewhere.

 

[shiftdown]

Other than Apex, anyone have any other vendors they like for wheels that offer them pre-made, rather than 2-3 piece? The 2-3 piece ones are typically in the $2200 range, so I'm curious who else Blackwing owners should be looking at.

Did your wheels get delivered? Have them installed yet?

 

[zonearc0]

Not yet. Couple more weeks and I'll have them. I'll report back as soon as I have them on!

 

[zonearc0]

Follow up. Apex wheels are on. Working great, looking great. No issues.

 

[Throat Yogurt]

Follow up. Apex wheels are on. Working great, looking great. No issues.

Well done. How much did this setup run you (minus tires)?