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2020 GS AWD Titanium Flash Mica
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Discussion Starter #1
I have a CX-30 on it's way and am planning on getting snow tires for it before next winter. I was hoping to get some OEM take-off alloys, likely 16 inch. Would anyone know which model year Mazda 3 wheels will fit the CX-30?
 

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2020 Mazda CX-30 GS AWD Crystal Blue Mica
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My aftermarket 2018 Mazda3 alloy wheels fit ok. Had them test it when I bought the car.
 

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2020 GS AWD Titanium Flash Mica
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Discussion Starter #3
Turns out that because I have a GS, I will need at least 17 inch wheels due to an increase in brake rotor and caliper size compared to the GX. Those from a CX-5 are apparently ideal.
 

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2020 Mazda CX-30 GS AWD Crystal Blue Mica
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You might want to check again. I also have a GS AWD and the dealership mounted my 16" winter tire on the car before I bought it and said it was fine.
 

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2020 GS AWD Titanium Flash Mica
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Discussion Starter #5
Interesting.
I purchased some 16 inch OEM wheels from a 2017 Mazda 3 prior to purchasing our CX-30. The parts manager and the president of the dealership were both adamant that 16" wheels were not correct for the GS even though the GX comes from the factory with them. That could have been sales BS, but I have recieved the same info from a couple of Mazda 3 forum sources as well.
If 16" wheels do indeed fit, perhaps the caliper clearance is too close for Mazda to approve the use of them?
 

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Discussion Starter #6
You were involved in the same conversation on the Mazda 3 Revolution site. You mentioned that the 16 inch wheels were aftermarket (not OEM).
It was mentioned in the same thread that the GS rotors were 320mm and the same as the CX-9 (which require 17" minimum wheels) and the top trim Mazda 3 has smaller rotors than the CX-30.
 

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2020 Mazda CX-30 GS AWD Crystal Blue Mica
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Yes, the rims are aftermarket alloys. I also called Mazda directly about the fit but they didn't seem to have any information and referred me to the dealer. When I then called the dealership and talked to a technician, he said he was certain the OEM wheels would fit and thought the aftermarket ones would too but would have to try them on to be 100% sure so when I picked up the vehicle I took one of the wheels along. Odd though that a Mazda dealership technician would try them and confirm they fit if the caliper clearance is wrong. I suppose he might not have checked as carefully as he should have. I won't be happy if it turns out he was wrong and I have to buy new rims and tires in the fall.
 

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Discussion Starter #8
Perhaps they did fit but like I said previously, the clearance may be minimal. I will try the ones I have just to check that out and report back. It will take some time as I currently have a more pressing project on the go, but I will report back here and on the Mazda 3 site.
 

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2020 Mazda CX-30 GS AWD Crystal Blue Mica
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Looking forward to hearing about what you learn.
 

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Do we really have to put on sensors on winter tire/mags. Do my dealer will push me to put some ? what could be the price for those ?
thanks .
 

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It was mentioned in the same thread that the GS rotors were 320mm and the same as the CX-9 (which require 17" minimum wheels) and the top trim Mazda 3 has smaller rotors than the CX-30.
I'm trying to match up with what the specs sheet from Canadian Mazda says here: https://cdn.mazda.ca/common/cars/brochures/2020_cx-30_specs_en.ts.2005051451410000.pdf

According to this, the AWD rotors (regardless of trim) are 303mm, not 320mm? Interesting also that the distinction seems to be FWD vs. AWD and not trim-based. Anyone know what's really going on?

EDIT: there's also a guy here in our very own forum here who says his dealer installed R16 winter tires for his GT AWD after consulting with Mazda Canada. Winter Tires?
Post #12

This still leaves me confused - why are we hearing different things from different dealers?
 

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All I know is what I wrote earlier. Since my purchase was partly based on their assurance that 16" wheels work fine, I'll be quite unhappy if I discover, when the time comes, that they don't.
 
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