Verify if wheels will fit?

[jeeeezluis]

Hello,
I was looking to purchase some mustang black accent wheels on market place and I just wanted to verify if they could fit on my Stinger GT. I do not know much of rim and wheel size so I was wanting to ask if someone knew if they would fit.
19x 8.5 squared set up
42.5 offset
Tires he has on it are 245/40/R19 (I might change it to 255/40/R19 since that is OEM size)
I have linked it below. I am pretty sure they will but I just want to double check with someone more knowledgeable lol.

19 x 8.5 Ford Mustang 2018 2019 2020 Factory OEM Wheel Rim 10159

This reconditioned 19 x 8.5 factory OEM 7-spoke wheel came included with the Ford Mustang Black Accent package for the years 2018, 2019 & 2020. Ford only offered this wheel in this black finish, as seen here. These reconditioned 19-inch Ford Mustang

www.wheelership.com

 

[Snicklefritz]

Not in front. You'll need some hefty spacers and maybe longer studs because of that. Then you might get into the fenders. I wouldn't ever do it, but Ima not "adventurous" with mods and aftermarket stuff.

 

[Thomby]

Stock fronts are 8" +34. At the same offset the 1/2" width would mean an extra 1/4" (6.4mm) inside and out, then the +8.5 increase in offset would push the wheel inward that much (another 1/3"). So your inside edge would be ~14.9mm or over 1/2" further in, and your outside edge would be about 2mm further in.

A 15mm spacer (bolt-on style, since you won't have that much extra stud length) would bring the inner edge back to its stock location, and put the outer edge about 1/2" further out. A 20mm spacer brings the stock wheels pretty flush, and would work here too.

Stock rears are 8.5" +46.5. No change in width, and reducing offset 4mm to +42.5 would push the wheel outward that much (0.16", negligible). Same deal as the fronts, a 20mm spacer brings stock wheels roughly stock, but since this square setup will sink the fronts in 2mm and push the rears out 4mm (6mm total mismatch), going with 5mm smaller spacers in back would be ideal.

So 20mm front / 15mm rear, or 15mm front / 10mm rear (the latter would be disc spacers rather than bolt-on...not sure if stock studs have the extra length).

 

[jeeeezluis]

I wouldn't mind the backs being out a little bit. So I would be fine running with 15mm spacers in the front with disc spacers?

 

[Thomby]

I wouldn't mind the backs being out a little bit. So I would be fine running with 15mm spacers in the front with disc spacers?

Are you asking whether you can just run 15mm fronts and nothing in the rear? Or if you can find slip-on / disc-style spacers that are 15mm?

For the first question, it won't be the worst mismatch, but having the outer edges of the front wheels 1/2" further out than stock, with the rears basically unchanged, will probably be noticeable. 5mm slip-on spacers are like $25 on amazon and hard to screw up, so you could try that.

If you're asking whether your 15mm fronts can be slip-on vs. bolt-on, I doubt it. I think I remember seeing that 10mm ones require extended studs, so even if you found a 15mm slip-on set, it would be more work than installing a bolt-on.

For the bolt-ons you just need a prybar or breaker bar that reaches the ground to stop the hub from turning while you torque them on (with the car on a solid jackstand, and preferably jack just beneath the stand's height as backup), and a bit of anti-seize on the faces of the spacer. Otherwise they're just like putting a wheel on, but twice.

 

[jeeeezluis]

Any spacers you would recommend? If this is too complicated for me I might just not do it. I already have to get 2 new tires for them anyways.

 

[Thomby]

Any spacers you would recommend?

Our lug pattern is 5x114.3mm (5x4.5"), and the studs are M12x1.5, with a 67.1mm hub.

Here's a 20mm pair: www.amazon.com/dp/B01L6NUMSY
Here's a 15mm pair: www.amazon.com/dp/B01L6NSY8O
Here's a small tube of anti-seize (enough for the spacers and your next decade of spark plugs): www.amazon.com/dp/B007NJOEAI

 

[jeeeezluis]

Thanks but unfortunately the dude sold them before I even messaged him back. I did however manage to get a pair of ESR RF2s 19x8.5 with 30 offset. Do you think 255/40/19s would fit squared? If not can you recommend tire sizes? I know the 40 would have taller walls but I could use it since I live in Indiana and we have plenty of pot holes here

 

[Thomby]

I did however manage to get a pair of ESR RF2s 19x8.5 with 30 offset. Do you think 255/40/19s would fit squared?

Math works the same as above.
- Fronts: you're adding 1/2" (12.7mm), or 1/4" (6.35mm) inside & out, then dropping offset to 30 shifts it 4mm outward. So inside edge is 2mm further in, outside edge is 10mm further out, ie halfway between stock tuck and the flush fit of a 20mm spacer.
- Rears: you're just dropping offset 16.5mm (.65"), so a little closer to the flush fit of a 20mm spacer but shouldn't be a big mismatch with fronts (6.5mm or 1/4" further out).

For tire size, the stock 225/40 and 255/35 are 26" tall, and a 255/40 is 27". Obviously you'll match front to back (not sure if you're AWD), but your speedometer will be off 3.4%. You can play around with the Tire Comparison tab here: Tire Size Calculator