Hope this information helps someone else because there is conflicting information on other forums about what other GM wheels will fit this car. This matters to anyone who wants a set of winter tires (not a problem for us in the SF Bay Area) or better ride quality with cheaper tires (a major concern with the horrible roads we have).
I posted last week about one of the stock 21" wheels on our 2025 Equinox EV RS cracking and leaking air. The dealer quoted $1000 to fix it (just the wheel is $800+), so I had a buddy at a tire shop look at it and we determined it was not repairable. We considered simply paying the $800 for a new wheel, but in the end we would prefer better ride quality, cheaper tires, and better pothole resistance that smaller wheels with tires offer was a better route.
So I did some research and found that the 6x120 bolt pattern with 66.9mm hub size the Equinox EV uses is shared with many other GM vehicles, including Colorado, Canyon, Traverse, Blazer (gas), etc. And other people reported 17" Colorado wheels fit fine, so that's what I got.
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I ended up with a used set of 17" Colorado wheels with 245/75R17 tires as a temporary solution til I find the ones I want (more on that later), but here is the fitment situation with those:
Wheels: The 17" Colorado wheels barely clear components (lower control arm as well as a bolt on another component). The wheel weights on the rear tires would have hit the suspension components if I hadn't noticed this prior to testing... this would have been a major issue and possibly led to vehicle damage. So pay attention!! I took off the weights and drove to my buddy's tire shop for him to balance them with the weights in locations that don't conflict. That solved that problem. The Colorado wheels are also slightly narrower and offset further outward but it's not really a concern.
Tires: Obviously 245/75R17 tires are about 2" larger in diameter than the stock 275/40R21 tires that came with the car. Soooo, yes, it rubs a tiny bit when you turn all the way, especially if you're also turning while driving up something like a driveway. If you leave it like this and aren't careful you might end up messing up the wheel liner eventually. So this size is not a good choice.
TPMS: The Equinox EV uses different sensors than older GM vehicles so currently we have a TPMS error on the dash. When we find the final wheel combo we'll get TPMS sensors to restore full functionality because who wants an error message on a brand new car?
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So, while this combination works, it has issues. In theory we could just get slightly smaller tires on the 17" wheels, but the concern is, what if we take the vehicle to the dealer or a tire shop for some other reason and don't warn them that they need to be careful where they put the wheels weights it could cause MAJOR issues.
Ultimately we're on the prowl for a set of Blazer (gas) 18" wheels with 235/65R18 tires. I think this will be the perfect combination! The 18" wheels will offer plenty of clearance so that we don't have to worry about wheel weight locations, and that tire size is almost the same exact diameter. There were some perfect ones for sale locally but they sold 5 minutes before I messaged the guy
Long term this will save a lot of money because we drive a lot on this vehicle. I'm not good at math but we got this vehicle in April 2025 and already have 21K miles on it. The more affordable tires over time (at this mileage we'll probably need tires every 2 years or so?) will really add up! Also keep in mind the factory tire is self-sealing so if you pick up a nail you might not lose air. But, that's what roadside assistance is for... and self-sealing tires don't help when your wheel is cracked LOL.
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Check this out (price and availability on Tirerack at the time of posting - for cheapest I picked all season tires and excluded out of stock, clearance, winter, or summer only tires):
Original 275/40R21 tire (Continental): $390/each. Set of 4 costs $1,560.
Cheapest 275/40R21 tire: $320/each. Set of 4 costs $1,280.
Quality name brand 235/65R18 tire (Vredestein): $230/each. Set of 4 costs $920.
Cheapest 235/65R18 tire: $130/each. Set of 4 costs $520.
---
Anyway, hope this is helpful... and enjoy this picture of what I'm now calling our 2025 Equinox EV Z71! I'll update this thread when I acquire the 18" wheels we ultimately want.
I posted last week about one of the stock 21" wheels on our 2025 Equinox EV RS cracking and leaking air. The dealer quoted $1000 to fix it (just the wheel is $800+), so I had a buddy at a tire shop look at it and we determined it was not repairable. We considered simply paying the $800 for a new wheel, but in the end we would prefer better ride quality, cheaper tires, and better pothole resistance that smaller wheels with tires offer was a better route.
So I did some research and found that the 6x120 bolt pattern with 66.9mm hub size the Equinox EV uses is shared with many other GM vehicles, including Colorado, Canyon, Traverse, Blazer (gas), etc. And other people reported 17" Colorado wheels fit fine, so that's what I got.
---
I ended up with a used set of 17" Colorado wheels with 245/75R17 tires as a temporary solution til I find the ones I want (more on that later), but here is the fitment situation with those:
Wheels: The 17" Colorado wheels barely clear components (lower control arm as well as a bolt on another component). The wheel weights on the rear tires would have hit the suspension components if I hadn't noticed this prior to testing... this would have been a major issue and possibly led to vehicle damage. So pay attention!! I took off the weights and drove to my buddy's tire shop for him to balance them with the weights in locations that don't conflict. That solved that problem. The Colorado wheels are also slightly narrower and offset further outward but it's not really a concern.
Tires: Obviously 245/75R17 tires are about 2" larger in diameter than the stock 275/40R21 tires that came with the car. Soooo, yes, it rubs a tiny bit when you turn all the way, especially if you're also turning while driving up something like a driveway. If you leave it like this and aren't careful you might end up messing up the wheel liner eventually. So this size is not a good choice.
TPMS: The Equinox EV uses different sensors than older GM vehicles so currently we have a TPMS error on the dash. When we find the final wheel combo we'll get TPMS sensors to restore full functionality because who wants an error message on a brand new car?
---
So, while this combination works, it has issues. In theory we could just get slightly smaller tires on the 17" wheels, but the concern is, what if we take the vehicle to the dealer or a tire shop for some other reason and don't warn them that they need to be careful where they put the wheels weights it could cause MAJOR issues.
Ultimately we're on the prowl for a set of Blazer (gas) 18" wheels with 235/65R18 tires. I think this will be the perfect combination! The 18" wheels will offer plenty of clearance so that we don't have to worry about wheel weight locations, and that tire size is almost the same exact diameter. There were some perfect ones for sale locally but they sold 5 minutes before I messaged the guy
Long term this will save a lot of money because we drive a lot on this vehicle. I'm not good at math but we got this vehicle in April 2025 and already have 21K miles on it. The more affordable tires over time (at this mileage we'll probably need tires every 2 years or so?) will really add up! Also keep in mind the factory tire is self-sealing so if you pick up a nail you might not lose air. But, that's what roadside assistance is for... and self-sealing tires don't help when your wheel is cracked LOL.---
Check this out (price and availability on Tirerack at the time of posting - for cheapest I picked all season tires and excluded out of stock, clearance, winter, or summer only tires):
Original 275/40R21 tire (Continental): $390/each. Set of 4 costs $1,560.
Cheapest 275/40R21 tire: $320/each. Set of 4 costs $1,280.
Quality name brand 235/65R18 tire (Vredestein): $230/each. Set of 4 costs $920.
Cheapest 235/65R18 tire: $130/each. Set of 4 costs $520.
---
Anyway, hope this is helpful... and enjoy this picture of what I'm now calling our 2025 Equinox EV Z71! I'll update this thread when I acquire the 18" wheels we ultimately want.
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