Where does one find wheel info for offset, bolt pattern, minimum wheel weight capacity requirements, etc. I looked through the 711 pages of the manual <ZZZZZZZ> and couldn’t find any info. I have a Turbo S with 21” wheels, and am trying to figure out what the recommended options are for winter wheel/tire sizes, offset, etc as well as what my stock wheels are. I‘m aware that Tire Rack lists various diameter options, but I’m wondering if there are specific Mazda recommendations/requirements.

 

You won't find the wheel specs in the manual.

see post #1

https://www.cx90forum.com/threads/cx-90-wheel-options-beyond-oem.168/#replies

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"

If you go to Tirerack.com and put in your CX-90 model and trim you can choose what size wheels from 18" and it will give you various sample options. For Winter both 18" and 19" wheels and tires will fit and work with your Turbo S. Tirerack has already determined which wheels will fit. Using their wheel specs you can go shopping on your own. Some Canadian owners have posted sources they used for Winter wheels.

 

They just left off the .3.

My 18 inch wheels fit just fine on my CX-90. I have a set from TireRack with Blizzak snow tires mounted. The main concern going to a smaller diameter wheel is interference with the brake calipers rubbing on the inside of the wheels - no issues with that on a CX-90.

TireRack verifies fit before they make a recommendation.

 

Yes, the 0.3" difference is essentially equivalent for fitment.
see

5x4.5 vs. 5x114.3 vs. 5x114: What Is The Difference?

Are you confused about the 5x114, 5x114.3, and 5x4.5 bolt patterns? Read this article to know more as it answers several frequently asked questions about them.

hondabase.com

In general when going to aftermarket wheels, just have to check that brake calipers have enough space for cooling (at least 3mm of air gap), the inner wheel barrel doesn't scrape against anything, the offset allows enough clearance from the inner suspension parts, and the amount of wheel poke is not too far out beyond flush that it kicks up rocks to hit the fenders.

When a wheel is as large as 21" diameter you have quite a bit of play with possible wheel sizes that will fit. The larger wheel as OEM allows for a taller tire diameter of 30.7" which is more compatible with SUV designed tires. Many good tires are built for smaller tire diameters even with a 21" diameter and are not suitable for the CX-90. Fortunately tire makers are doing a good job providing tall tire sizes so choices are still good. As long as the wheel can fit over the brakes which an 18" wheel can do you can choose any wheel from 18" to 22" and it will work with the CX-90 which is nice. This also allows for various tire sizes to fit the wheel and get a tire diameter of about 30.5 to 30.7" so that it fills out the wheel well and doesn't increase wheel gap. Tire width is not that crucial as long as the tire fits the wheel width range with perfect fit being better for handling, performance and wear on the tire.

Winter tires can be more narrow and work fine in the snow. Taller sidewall helps to give more cushion but may also reduce handling crispness or responsiveness. Just because a tire is 45 series doesn't mean it can't offer reasonable ride comfort, this is the result of good tire design. However large tires can be quite expensive so always keep tire pressure up for best wear.

As tires age the rubber gets worn down and harder which means it wears slower but ride quality can be harsher, noisier and less grippy. I am always happy to get a new set of tires and can usually tell when the new tires are mounted and used.

 

I used a set of 18 inch MSW recommended wheels from TireRack.

 

Care to share pics with your 18s? The simulated picture on tire rack with 18s don't look too good but I suspect they look a lot better in reality.

 

Might be awile before I get the car and wheels cleaned-up.

To tell you the truth, the black rims don't look that great, but what matters to me is how the tires perform in the snow.

 

Did you get TPMS from Tirerack as well or did you transfer your TPMS from the OEM wheels?

 

I paid the extra $260 ( ?? ) for the installed TireRack TPMS sensors. That way I don't have to pay every spring to have the OEM sensors swapped between wheels. The CX-90 can read the new sensors without the need for a re-learning tool. They worked by the time I reached the end of our driveway.

 

OK, thanks for the info on the TPMS sensors. It's nice not to have to re-learn with a wheel swap, why didn't they have that feature from the start and is that the current standard for new Mazdas?

About TPMS (been around for over 20 years)

The History of TPMS Lights - Inertion

One of the most dangerous predicaments facing automobile drivers is a problem that is easily overlooked but takes minimal effort to correct. It is low tire pressure, and motor vehicles didn’t always have low tire pressure warning equipment that we have today. Back in the 1970s, Indiana State...

inertion.org

10 Years of TPMS: A Technology Comes of Age - Tire Review Magazine

September 2017 marked the 10-year anniversary of mandatory tire pressure monitoring systems (TPMS). During these past 10 years, more than 147 million vehicles were sold with TPMS.

www.tirereview.com

Everything you Ever Wanted to Know about TMPS, FAQ about Tire Pressure Monitoring Systems - 106 St. Tire & Wheel

The ABCs of TPMS: FAQ about TPMS (Tire Pressure Monitoring System) from the experts at Queens 106 St Tire & Wheel I’m hearing a lot about tire...

106sttire.com

 

Good question ! On my wife's 2016 Chevy Cruze I could do a re-learn with a simple $15 tool. On my KIA Sorento it took a more expensive tool to do the job that the tire store had to use. For those cars the TPMS module needs to be told at which wheel the sensor is located ( they each have an ID number that is sent to the TPMS module ).

I was reading that on some cars ( apparenty including the CX-90 ) that there is an "antenna" near each wheel and the TPMS knows the strongest signal received at each wheel lets the TPMS module know that must be the TPMS sensor mounted in that wheel. Nice system, IMO. So when I swap my OEM wheels back on in the spring, no re-learn is necessary.

 

I'm glad too !!

If that was required a good tire store could probably do it instead of the dealer. My dealer is about an hour drive and the local tire store that does my riotations is only 10 minutes away.

Just to satisfy my curiosity, I was looking at the tire pressure monitors for recent Mazda's at Rock Auto ( no listing yet for the new CX-90 ) and noticed Mazda has been using the same sensor in most models for the last several years. I bet the same sensor is also being used on the CX-90.

I considered getting the tire & rims without the sensors to save about $100 on sensors but then I would have had to pay the local tire shop to mount the tires on the rims and do a balance and in the end, that would have just about cost me the same money.

 

A tale of caution. I was lucky. I come from the snow belt and I v seen this happen before but living in TN I kinda forgot. I left the CX90 with two front wheels in the garage and most of the car on my inclined driveway. It was at the top. I turned and saw the car moving down the driveway. I grabbed it by the front wheel area and I was going for a ride. I saw the back wheels locked so I made a quick choice to let it ride, LOL. I immediately thought when it hit the street it would stop. and it did. Lucky I missed the brick light post. I can laugh now.

 

my first thought was the car came out of parked!!!!

 

in park, e brake on, car off.

 

Oh wow! I haven’t seen this happen on just snow, unless there is a sheet of ice underneath. Or a really strong wind gust that got it going..

 

just real slippery snow. Happened once before when I was upstate NY. It was a pickup with a plow. I was in garage , heard some kind of noise outside. when I went out the truck was 1/2 in the street. I thought I knew better. I had the two front wheels on the cx in the garage. I wasn't t thinking that the fronts turn free.... I m a slow learner.

 

I had the two front wheels on the cx in the garage. I wasn't t thinking that the fronts turn free.... I m a slow learner.

Interesting.. learn something new every day!
Thought putting it in Park would hold the front wheels on an awd vehicle. At least that’s the behavior on my other vehicle (Subaru).

 

Making a mental note to self, remember those wheel chocks when you lift up the rear on the jack to get the winter tires on!!!

 

Just wanted to show that the TPMS error isn't that bad. When you first start the car, itndoes present the large message that you can clear by pressing INFO, then it's just a small light near the left depending on what view you're using.

 

ok, thanks. it's like having the air bag light on all the time in my 20+ year old car.

 

Hi everyone,

new member here, just picked up my Signature a few days ago. After a bit of researching, I decided to go with the following setup:

Touren TR79 20”X9”, ET 35 (rated 2,000lbs)
Blizzak DM-V2 265/50/20

keeps it within spec to stock 21s, and exceeds recommended load rating. Would have preferred Michelin X-Ice tires, but on a time crunch and was able to get the above within a day (from local shop).

 

Finally have a clean-ish car to post a picture. Here's the preferred plus trim with Tire Rack's recommended -1" wheel size, and Vredestein Wintrac Pro tires. I've been pretty happy with this setup in our limited snow so far. I wouldn't say these "performance winter" tires are as good as a dedicated studless ice/snow, but they're definitely better than an all-season. Handling and road noise is really good as well, only a little more hum than the stock tires.

Roof rack is the Thule Wingbar Evo setup. Also quite pleased, install was easy and wind noise is minimal.

I dunno, some people seem to really care about wheel/tire appearance/fitment in the arches. I can't say I really know what to look for, but I don't think this is a bad-looking setup. I choose winter wheels for price not appearance, but I don't think the black rims look terrible with the car!

 

Just ordered a set of the stock 19” wheels & tpms sensors and Nokian Hakkapeliitta 9 SUV (Studded) to go on them.

Went with the 265/60/19; they are an inch shorter overall than the stock size, Couldn’t go wrong with the under $200 bucks a tire… hopefully they don’t look too bad on the car.

Heard a lot of good things about Nokian winter tires, now it’s time to try them.
First time doing studdies, hopefully won’t regret it

 

What website was this from?

 

Had Nokians on my Grand Cherokee. I found them to be really good in the snow. Had the R3 SUV, non-studded.

 

I found this video on Nokian Winter tires (Studded vs Winter compound tires)

And this more recent winter tire comparison test

Test using an SUV and tires made for SUVs
Nokian Snowproof 2 SUV was tested
4:20 Snow handling test results
4:37 Snow traction test results
4:49 Snow braking test results
8:08 Wet handling test results
10:15 Wet braking test results
11:21 Dry handling test results
11:37 Dry braking test results
12:27 Noise test results
12:43 Rolling resistance test results
13:20 overall results

Nokian hakkapelitta 9 SUV do come in various CX-90 friendly sizes
275/45-21

I did not see 265/60-19 available-

Nokian Tyres Hakkapeliitta 9 SUV - Maximum grip and durability / Nokian Tyres

The studded Nokian Tyres Hakkapeliitta 9 SUV winter tire grips firmly and handles steadily in the varying winter weather. Strong Aramid fibers in the sidewalls gives the tire maximal durability. This product is now discontinued.

www.nokiantires.com

265/55-19 and 265/50-19 are available

Also this video on winter tires-

17:05
Key advice- to match tire compound/design with your winter use
Central European Performance Winter tire- best grip and handling in dry and wet conditions over the winter. Less snow and ice performance.

Soft compound studless winter tire-
Highest level of safety in snow, very good on ice, reduced grip in dry and wet.

Studded Winter tire-
Ultimate grip on ice and snow, reduced grip in dry and wet, increased noise, not permitted in certain regions, best for extreme winter conditions.

 

Finally got everything in place. They look mean and awesome! Will be stored till December for next season.

Finally got everything in place. They look mean and awesome! Will be stored till December for next season.

 

Finally got these on the car last month and have about 1000 miles on them so far.
They are solid; really impressed with the ride and grip. No squishiness at all. And the noise levels aren’t too much higher than the factory toyos.

 

So much great info on this forum that went well beyond the little they could tell me at the dealership. I went with Touren TR79 rims at 18x8 like a lot of others here, and bought some Continental Viking Contact 7s at 265/60/18 114XL for winter tires. Was still way cheaper than dealership winter package.

The Tourens have a load rating of 2000lbs per wheel, which exceeds the recommended 900kg, and are one of the few affordable options. The TR78s look awesome too and also exceed the load rating, but are $50 more per rim.

Anyway, big thanks to all on the forum. My GS-L MHEV is now a winter beast.

 

The Touren wheels look good and 18x8" should be fine for winter use.

Note:
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"

TR78 3278 – Touren (center bore 72.6 will need a spacer ring, let vendor know this is for CX-90)

TR79 3279 – Touren (center bore is 67.1 so no spacer needed will fit perfectly)

 

That's a beautiful looking wheel and frankly, I would use it year round. I'm a Yank from Montana and we have VERY similar laws in the winter except they give us a choice, chain up during snow or run 3 peak severe snow service tires. That's a minor difference but same reasoning. I was going to go with the Michelin Cross Climate 2 in 265 60 R18 which should give negligible to non existent speedometer variance readings as it is within a 1/4" 6.35mm from the stock 30.74" diameter tire of the Turbo S. I was going to run 8x18" 2023 CX9 aluminum wheels with the correct 5x114.3 67.1mm bore, and 45mm offset.

Unfortunately, I have read enough about the CX90 Turbo S for 2024 to turn my stomach. Everything from dealers giving self oil changers the wrong oil filters and even the dealers putting on the wrong oil filters at oil changes, to differential leaks, defective mild hybrid batteries, and a list of electronic bugs as long as my arm. Rattling sunroofs, defective power mirrors, etc..... Several Yanks are now seeking what we call our lemon law resolutions which effectively means, legally forcing Mazda to buy the vehicles back.

I loved the vehicle at first sight, but now, I'm not sure I ever want it. Far too many failures of electronic systems and the worst of all, a nanny collision avoidance system yanking the steering wheel when there was no imminent collision. Oh yes, and defective steering racks on recall. Unbelievable........I wish you well, whatever you do, if you start experiencing these issues, consider taking steps to get the vehicle back to Mazda. Those of us in the Montana, Idaho, Dakotas, Alberta, Saskatchewan, British Columbia areas, cannot afford to have our lives put at extreme risk due to Mazda's apparent negligence to the build of this vehicle. Especially in the middle of winter.

 

You guys are overthinking all this stuff.............
I have the OEM wheels which came with my 2024 PHEV premium
21s with OEM Falkens.
-At my first tire rotation I put on my all terrain wheels which are 18 diam with my All Terrain Falken Wildpeak W4s. They are quiet even though you can go mudding,...or beach driving,...triple peak winter rated.
65K tread wear warranty.
PS my wheels can take 2,450lbs per wheel and tire.(Mazda says the PHEV minimum is 1900 something)

 

What was the exact rim specs and tires you use for the 21inch?

 

Looking at this combo:

Wheels: Touren TR79

• 18x8
• 5 x 114.3
• 35.0 mm Offset
• 67.1 mm hub size
• Some reasons PMC doesn't indicate this wheel to be fit for the CX90

Tires: Hankook Winter i* pike X

• 265/60R18
• factory studded

Thoughts? Open to suggetions

 

Looking at this combo:

Wheels: Touren TR79

• 18x8
• 5 x 114.3
• 35.0 mm Offset
• 67.1 mm hub size
• Some reasons PMC doesn't indicate this wheel to be fit for the CX90

Tires: Hankook Winter i* pike X

• 265/60R18
• factory studded

Thoughts? Open to suggetions

Could be an issue with the inside of the wheel interfering with the caliper ?
The MSW type 31 with a 45 mm offset works on my CX-90