Gemini Model Y winter tire package

garsh

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Wheel Issues
The wheel itself may fit. The first issue would be if it has the little chamfer to clear the Performance's hub that sticks out. If it doesn't then you'd need to use a custom spacer, but that would cause the wheel to poke out too far (see below).

As @Mad Hungarian has stated, a 9.5" wheel can fit up front on a Model 3. The Gemini wheels are 9.5" wide with a +45 offset. So they'll stick out 4.75" - 45mm = 76mm from the hub. A set of Performance Zero-G wheels are 9.0" wide with a +34 offset, which is 80mm from the hub. So the width and offset will actually work out almost perfectly on a Performance Model 3.

Another issue to consider is weight. These Gemini wheels are going to be much heavier to handle the greater weight of a Model Y. That extra weight will affect your efficiency in city driving, with all the slowing down and speeding up.

TPMS
The TPMS will be bluetooth, which won't work with current (older?) Model 3s.

Tires
The tires will be too big. The Model 3 uses 235/40R19 on 8.5"-wide 19" wheels. These are 255/45R19. They're going to be a bit too tall - that is, the outer diameter is too large. It will be about 1.5" taller. You'll actually be going about 69mph when the speedometer shows 65mph.
https://www.discounttire.com/learn/tire-size-calculator
 

JCE

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Denver, CO
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Model 3
Wheel Issues
The wheel itself may fit. The first issue would be if it has the little chamfer to clear the Performance's hub that sticks out. If it doesn't then you'd need to use a custom spacer, but that would cause the wheel to poke out too far (see below).

As @Mad Hungarian has stated, a 9.5" wheel can fit up front on a Model 3. The Gemini wheels are 9.5" wide with a +45 offset. So they'll stick out 4.75" - 45mm = 76mm from the hub. A set of Performance Zero-G wheels are 9.0" wide with a +34 offset, which is 80mm from the hub. So the width and offset will actually work out almost perfectly on a Performance Model 3.

Another issue to consider is weight. These Gemini wheels are going to be much heavier to handle the greater weight of a Model Y. That extra weight will affect your efficiency in city driving, with all the slowing down and speeding up.

TPMS
The TPMS will be bluetooth, which won't work with current (older?) Model 3s.

Tires
The tires will be too big. The Model 3 uses 235/40R19 on 8.5"-wide 19" wheels. These are 255/45R19. They're going to be a bit too tall - that is, the outer diameter is too large. It will be about 1.5" taller. You'll actually be going about 69mph when the speedometer shows 65mph.
https://www.discounttire.com/learn/tire-size-calculator

Thanks but this is from the Model Y site so would assume the tires and wheels they are selling would be OK with the Y. I am aware of the “groove” inside the performance 3 and assume the performance Y has something similar but don’t know. The model 3 winter tires clearly tell you that some of the wheels don’t fit the performance but no mention of that on the Gemini wheels on the Y site.
 

garsh

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Thanks but this is from the Model Y site so would assume the tires and wheels they are selling would be OK with the Y. I am aware of the “groove” inside the performance 3 and assume the performance Y has something similar but don’t know. The model 3 winter tires clearly tell you that some of the wheels don’t fit the performance but no mention of that on the Gemini wheels on the Y site.

OMG, I can't read. Doh! :flushed:
 

Mad Hungarian

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Montreal, QC
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Model 3
Wheel Issues
The wheel itself may fit. The first issue would be if it has the little chamfer to clear the Performance's hub that sticks out. If it doesn't then you'd need to use a custom spacer, but that would cause the wheel to poke out too far (see below).

As @Mad Hungarian has stated, a 9.5" wheel can fit up front on a Model 3. The Gemini wheels are 9.5" wide with a +45 offset. So they'll stick out 4.75" - 45mm = 76mm from the hub. A set of Performance Zero-G wheels are 9.0" wide with a +34 offset, which is 80mm from the hub. So the width and offset will actually work out almost perfectly on a Performance Model 3.

Another issue to consider is weight. These Gemini wheels are going to be much heavier to handle the greater weight of a Model Y. That extra weight will affect your efficiency in city driving, with all the slowing down and speeding up.

TPMS
The TPMS will be bluetooth, which won't work with current (older?) Model 3s.

Tires
The tires will be too big. The Model 3 uses 235/40R19 on 8.5"-wide 19" wheels. These are 255/45R19. They're going to be a bit too tall - that is, the outer diameter is too large. It will be about 1.5" taller. You'll actually be going about 69mph when the speedometer shows 65mph.
https://www.discounttire.com/learn/tire-size-calculator
To build one this:

19x9.5 does indeed fit in all four positions of a Model 3, however in order for that size to work on a Performance car it needs an offset somewhere in the +30 to +38 range, depending on the exact tire size used. As a result using a +45 wheel from a Y would require a minimum 10 mm spacer. AFAIK there aren't any 10 mm bolt-on spacers on the market for Model 3 but I have seen 15 mm ones, which would produce an effective offset of +30 and would be fine with 265/35R19 tires.
As for the chamfer required for the Performance hub, no versions of the Model Y have this (even the Performance Y having normal, thicker 1-pce rotors) but the spacer will solve that.
 

littlD

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Middy got a set of these today (finally!). We had to reuse the TPMS monitors from the All Season tires\wheels to get us on our way.

Our fantastic Chesterfield MO service center VOLUNTEERED to stop by tomorrow with my All Season tires\wheels with the TPMS monitors installed that missed the party today.

And they're using the tire totes I brought along, truly 5 star service!

As for UPS who were responsible for the TPMS shipment...
 

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