Boss 302S wheel fitment

[MR YUK]

I have a 2020 GT Convertible with performance package which has also been lowered about 1" all around.

https://www.tirerack.com/wheels/Whe...&autoYear=2020&autoModClar=GT+Performance+Pkg

I'm thinking of putting on the Boss 302S wheels and wondering if I will run into any fitment / rubbing problems. 19x9 front 19x10 rear.

Has anyone run these wheels? What size tires were you able to run without any interference?

Thank you in advance for your comments.

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[MR YUK]

Okay, it looks like no one has had this particular setup.

Please correct me if I'm am wrong in my calculations.

Current rear tire size is 275/40R19 on a 9x19 wheel with a 52.5 offset.

If I go with a 305/35R19 wheel, the tread of the tire will be 30mm wider.

Since the offset of the BOSS 320S wheel is 10x19 with a 47.2mm offset.

The difference in the offsets will move the tire towards the inside of the wheel well 5mm.

But since the 305 tire is 30mm wider, that would move the tire out 15mm further.

Added together, the 305 wheel on the 47.2 offset will net a 10mm toward the outside of the wheel well and a 20mm towards the inside of the wheel well.

Does this sound correct?

 

[MRGTX]

Okay, it looks like no one has had this particular setup.

Please correct me if I'm am wrong in my calculations.

Current rear tire size is 275/40R19 on a 9x19 wheel with a 52.5 offset.

If I go with a 305/35R19 wheel, the tread of the tire will be 30mm wider.

Since the offset of the BOSS 320S wheel is 10x19 with a 47.2mm offset.

The difference in the offsets will move the tire towards the inside of the wheel well 5mm.

But since the 305 tire is 30mm wider, that would move the tire out 15mm further.

Added together, the 305 wheel on the 47.2 offset will net a 10mm toward the outside of the wheel well and a 20mm towards the inside of the wheel well.

Does this sound correct?

That sounds plausible and it definitely looks like you are on the right track.
I have to be honest that I'm too lazy to check your work but this resource has yet to let me down and it may be helpful to you:

https://www.rimsntires.com/specs0.j...&et2=42&text1=Stock&text2=Sparco Assetta Gara

The other thing you can do is to find the specs on 19x9 and 19x10 wheels that are known to work and see how yours compare.

I would be REALLY surprised if those Boss 302 Laguna Seca style wheels don't work.

Good luck!

 

[Strokerswild]

I know I've seen at least one S550 running these wheels in person, and on the board. I pondered them myself when I first got my '15, they look great.

 

[MR YUK]

Thanks for the reply and the link. Looks like my calculation was off. It still might fit with 305's, but I will have to take a closer look.

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