Looking for some advice on using my 2020 CX9 winter tires on my 2025 CX90 PHEV GT.

My CX9 came with Pirelli Ice Zero FR 235-65-18.

Am I able to use these on my CX90?

 

From post #1 in this thread.
OEM 21 x 9.5 J ET45 - on front and rear
5x114.3 bolt pattern , centerbore 67.1 mm
Tire 275/45-21 Tire diam. 30.7"

Some options available online:

For smaller wheel diameter than OEM
18 x8" offsets from +30-45, weights from 25-31+ lbs each, about 20 wheels listed, from about $200 each, most are 1 piece low pressure cast Aluminum alloy
Tire 265/60-18 or 255/60-18
---------------
235/65-18 tires will fit rims 6.5-8.5" wide, perfect for 7" wide rims, load rating about 110 if XL load rated, tire diam. 30" so you will need rims about 18x8" with a load rating high enough for the CX-90.

For 18" winter wheels usually 255/60-18 or 265/60-18 are better tire sizes for tire diameter and load rating. 235/65-18 will fit a 18x8" rim but it will be small on tire diameter and narrow on that rim width.

Were you looking for winter wheels and tires and keep the OEM wheels and tires for non winter seasons?

 

Appreciate the advice!

The Pirelli's are installed on steel wheels but it seems based on what I'm reading that Mazda only really recommends their M016 alloys. Obviously, there are a number of options based on what people have purchased in this thread but they are all alloys as well.

I guess I'm just trying to decide if the current Pirelli's on steels are an option; if I should use the Pirelli's on a new set of alloy wheels; or if I should just straight-up purchase a new setup.

 

Yeah, second that .... if you plan on using the factory rims from the CX9, with those winter tires, just make sure the load rating is high enough to support the CX-90. Or, maybe you want to buy a set of 18" wheels to put that tire on it, just make sure they're within the acceptable ranges PhEVuser posted above .....

 

Oh, we can go to a +30 offset and still be ok? Nice!! That opens up some options. Looking at a few TSW offerings for spring time.

 

Might want to look at elementwheels.com as well ..... you may be able to also get a light weight "Flow Formed" alloy, sometimes they have sales... that's where I bought my 22"'s

 

For your tire options

275/50-20 fits rims 7.5-9.5" wide, perfect for 8.5" wide rim, 109 SL load rating, 31.1" tire diameter, this is slightly taller than OEM by 0.4" which is fine.

275/55-20 fits rims 7.5-9.5" wide, perfect for 8.5" wide rim, 113 SL load rating, 31.9" tire diameter, this is 1.2" taller than OEM so wheel gap is smaller, ride height/center of gravity is raised.

For TSW Canard 20x9" et+35 compared to OEM
The new wheel will be 16.4mm further from the inner suspension and the outer rim will poke out 3.7mm more. These are both fine for OEM suspension.

 

Would you recommend a 265 or 275 tire? I am looking for a tire to be flush with the edge of the rim without it giving a bubbled look.

 

You have options.

265/50-20 fits rims 7.5-9.5" wide, perfect for 8.5" wide rim, 107 SL load rating, 30.5" tire diameter. This is near OEM so it will work.

Whether the tire fits to the rim with a more or less flush fitment will have to do with the actual tire more than the specific tire size. Note that the 9" rim is wider than the 8.5" perfect fit so I would expect the tire not to bulge past the rim.

When you say bubbled look I think you mean the tire is wider than the rim. This is more likely when the rim is narrow and the tire is much wider. Overall I would say both the 265/50 or 275/50 should work. Any appearance differences are only aesthetic and aren't concern for function.

Tire function has to do with the exact tire model you select within those sizes as some are better suited for differences in weather or desired use (more off road, street driving, highway driving, better ride comfort or handling, etc).

 

You seem to be a wheel and tire guru so let me ask you this. There are some wheels aside from the TSWs that I am interested in. The wheel specs are: 21x9, +35mm, bore 72.56 — by wheel specs alone, they are very similar to OEM 21s. Perhaps the cx90 is still too new but I’m having multiple places tell me that the wheels I’m interested in won’t fit.

Help me out here with 2 pennies on the matter.

 

Give your wheel shop the OEM specs-
OEM 21 x 9.5 J ET45 - on front and rear
5x114.3 bolt pattern , centerbore 67.1 mm
Tire 275/45-21 Tire diam. 30.7"

Off hand your specs are OK although the rim is 1/2" more narrow which is fine. Centerbore is larger so you will need centering rings. Check that bolt pattern is a match. Offset is OK, new wheel will be 16.4mm further from the inner suspension and outer rim will poke out 3.7mm more which is fine. Only question is load rating which needs to be high enough for the 5000 lb. CX-90 plus extra for passengers and cargo.

Do you have any specific wheels in mind? Choice of tire and size?

 

Looking at the Rotiform BTL wheels in those specs. Bolt pattern would be also be 5x114.3 … I double checked and load rating is at 2200, which is plenty so it’s good there. As for tires, I’ll probably run same tire size as OEM 275/45 and go with Michelin Pilot 4 all seasons.

 

OK, looks good all around. Those are good tires for street use and should last, just watch tire pressure and rotate.

 

Hi guys, need your help.

Unfortunately i mounted new Blizzak DM-V2 265/50/20 on my aftermarket RTX Envy wheels from my CX5 to only noticed after that the load rating is 690kg insert face palm
Came across a set of wheels that would work but am looking for confirmation. I have a 2024 MHEV GT-P

Besides getting hub centric rings to match 67.1 center bore, everything else looks good. Am i missing something or am i ok to order these ?

Thanks!

 

will 245 be too low p.rofile?
Company sent me the wrong tires.

 

Give the exact full tire size- 245/ ?-? side profile and wheel diameter. You want OEM tire diameter of about 30.7"
245mm wide tires don't give much tire selection for the CX-90

 

Think he means 45 side profile.

if that’s what you meant @JP88; 265/45/20 will be a little over an inch smaller. Not the end of world, but the short side wall will likely make for a rougher ride. You’ll need to try the tires out and see of you like how they feel.

For comparison, I got a set of studded hakas in 265/50/19; which are the same overall dia; haven’t put them on yet, and plan to only use them Dec-apr. They were $180 a tire vs 350+ for 265/55/19 which is the correct size for the car. At half the price, it all just made sense in my head

 

@tornichoe i think we are mixing up posts. My question was
Unfortunately i mounted new Blizzak DM-V2 265/50/20 on my aftermarket RTX Envy wheels from my CX5 to only noticed after that the load rating is 690kg insert face palm
Came across a set of wheels that would work but am looking for confirmation. I have a 2024 MHEV GT-P

Besides getting hub centric rings to match 67.1 center bore, everything else looks good. Am i missing something or am i ok to order these ?

Thanks!

I believe @HPO5rules had a different question regarding side profile.

 

@tornichoe i think we are mixing up posts. My question was
Unfortunately i mounted new Blizzak DM-V2 265/50/20 on my aftermarket RTX Envy wheels from my CX5 to only noticed after that the load rating is 690kg insert face palm
Came across a set of wheels that would work but am looking for confirmation. I have a 2024 MHEV GT-P

Besides getting hub centric rings to match 67.1 center bore, everything else looks good. Am i missing something or am i ok to order these ?

Thanks!

I believe @HPO5rules had a different question regarding side profile.

my bad, wrong tag 🙂

 

JP88,

Compared to OEM rims your proposed rims will be 6.3mm further from the inner suspension and poke out 6.3mm less. Functionally this is fine but some owners prefer to have the wheel be more flush to the wheel arches. 6 mm isn't that much but wheel spacers of 10mm would work if you care. You can always just try it and see if it is OK.

The wheel specs are OK for the CX-90.

 

Great! thanks for the reply

 

If your dealer is limiting wheel choices you might want to talk to other dealers to confirm that is the case for the CX-70. Off hand it would not make much sense to allow various size wheels for the CX-90 and not for the CX-70.

Reason is even though CX-90 come with 21" wheels and tires, there are practical reasons to have snow wheels and tires that allow for smaller diameter alternatives. Some owners may need better snow tires that aren't available in 21" sizes.

 

Agree! I am checking with others, the dealer claims to be reflecting Mazda USA position, we'll keep this thread posted.

 

@PhEVuser Will a 21x9.5 35et fit? Stock tire size

 

Compared to OEM:

OEM 21 x 9.5 J ET45 - on front and rear
5x114.3 bolt pattern , centerbore 67.1 mm
Tire 275/45-21 Tire diam. 30.7"

Your 21x9.5 35et will fit OEM tire size no problem. The wheel will poke out 10mm more and will be 10mm further from the inner suspension parts. Should fit fine with OEM tire and OEM suspension.

 

What do you think the max poke is on the CX90?

 

There is no strict max poke but on a 21" OEM wheel with OEM suspension an added poke of about 10-15mm should look even with the wheel arch. You can be more aggressive with a front camber setting that is more negative but that would wear the tires more.

A 10mm poke as in your example is fine on both front and rear. Generally there is more tolerance for adding poke in the rear such as front 10mm and rear 15mm and about 5mm difference is safe. In the case of the CX-90 10mm poke on front and rear is fine.

 

Not to sound alarms, but I don't think "use spacers" should be suggested so passively... there is more to consider than just what thicknesses would look best.

Do we know the length of the OEM lugs? Typically, 10mm is about as thick a slide-in style spacer as you should use on OEM lugs, and with the particular focus of weight ratings for the CX90 wheels being so important, I would think at least 8 full turns of thread grab would be ideal. Hard to say if this is possible without knowing the OEM lug length... if they aren't long enough, longer lugs would be needed.

When you get to 15mm spacers, they typically change from slide-in to bolt-on style. Again, OEM lug length is important here in case they extend beyond the spacer thickness... sometimes you get lucky and the back of the wheel hub has casting cavities the tips of the OEM lugs can poke into; if not, then they will need to be cut down to at least flush with the spacer's face.

These are just the basics without even touching on the types of metal spacers are made of, lug and bolt ratings, or hub-centric needs... There could honestly be a thread dedicated solely to spacer do's/don'ts/safety!

Just my $0.02 😁

 

Looking for an 18" wheel for winter/all time driving so that we can throw on some BF goodrich trail terrains on my wife's cx90. They weigh less and offer good durability and traction.

 

I just put a set of 18" MSW Type 49 wheels, 265/60x18 Blizzaks from Tire Rack on to my CX-70 Turbo PP. This is my 2nd set of the wheels, 4th set of Blizzaks. I ran the previous wheels (and 3 tire sets) for 9 years on 2 Audi Q7s. Held up well, lighter than stock. I drive a lot on the U.P, big snow country, Blizzaks are the best. Slightly narrower tire than standard, same load rating, helps in the snow.

BTW the in-line turbo six bests Audi's supercharged 3.0T ... not looking back!

 

Yes, MSW type 49 wheels as described are OK for weight of CX-90. If in doubt talk to your wheel vendor if they will work with the CX-90.

 

For those looking for a flush fitment: 10.5in wide wheels w/ a +30 offset sit perfectly flush with the top of the wheel well/fenders. Assuming here that a 25-28 offset would accomplish the same on a 10in wide wheel

 

Are you 10.5 all around?

 

Thanks very much for the pictures of your flush fitment on 22 x 10.5" wide wheels. 275/40-22 tire size is good compared to OEM.
Note you may get a little more weight from the wheel and tire in these sizes. Tire selection may also be affected by the larger tire size.

 

Thanks for your post on using spacers. Yes, you are correct about the options and details on using spacers. Since this is a wheel option thread it is possible to do a separate discussion on spacers.

For those that want to use spacers you can search and look up the basics or talk to your wheel specialist when you are considering wheels and get info.

The intent with spacers is to push the location of the wheel further outward to get better fitment, clearance or just a cosmetic appearance for a flush look (side or tire to wheel arch inner portion). Some people think a flush look is nicer but OEM will be for more clearance and less chance for any rubbing.

I have run spacers on multiple cars but on my CX-90 I have OEM wheels with no spacers and I am fine with the fitment and look.

Spacers generally come in hard plastic (cheaper) or alloy and usually are best if hub centric so they can center on the hub. Aftermarket wheels come in different sizes including wheel hub so a centering ring is needed to interface between the spacer and the OEM hub. Talk to your wheel specialist as they often provide the spacer needed for a given car.

The length of the wheel bolt or lug is important to clear the thickness of the spacer being used. 5-10mm may be OK if the lug is long enough and has enough thread turns as described in the previous post to lock the nut and be secure. But once the spacer is thicker than 10mm then there may not be a long enough lug so you need to think about one of two solutions-

One is replace the OEM lugs and go aftermarket longer studs with matching nuts or option two is type 2 wheel spacers that fit on the OEM lugs and lock with nuts then provide additional lugs from the spacer that will accept the wheel and need nuts to lock the wheel on. Do some searching to find out the differences. I have used both types of spacers and longer wheel studs and they all work but some are more complicated. Consult with a specialist if you are worried about fitment.

If you have questions you can message me.

 

yes, 22x9.5 et30 wheel should be ok with OEM suspension, will poke out about 15mm more than OEM