2021 CX-9 Wheel size confusion

[cokeaddict]

Greetings!
owner of a 2021 Mazda CX-9 GT AWD.
I’m in the market for new tires and have been doing a lot research on the size and decided to go with 275/45 tires thinking that my CX-9 had 8.5” wide rims like so many here have stated, but today when I finally looked at the door jamb sticker it says 20 x 8.…I’m really confused now as to what the actual wheel size is. Should I get it measured? trust the internet that it is actually 8.5” or trust the sticker on the door?
anyone help me out with what the actual size is for a ’21 CX9 GT…
I’m in the US if that helps.

thanks!

 

[Silly Wabbit]

My 2016 sticker shows 20X8 1/2J. I think the 1/2J is spaced a bit far from the 20X8 that I almost missed it.

Any particular reason why you want to up the width? Personally I think it'll have a bulgey look and lower your fuel efficiency. But that's just me.

 

[cokeaddict]

My 2016 sticker shows 20X8 1/2J. I think the 1/2J is spaced a bit far from the 20X8 that I almost missed it.

Any particular reason why you want to up the width? Personally I think it'll have a bulgey look and lower your fuel efficiency. But that's just me.

Oh duh ok now I see it too! Thanks for pointing that out!

I like the look of wider tires and also plan to get some 20x9 wheels in a year so since I need tires now I figured I’d go with 275s …the tires are going to be the same weight as the stock but hoping it won’t have a huge impact on mpg for the time being. And then once I get the new wheels I’ll move the tires over to those and get rid of the bulge…

 

[gphin]

Every source I've seen indicates your wheel size should be 8.5 width. Since your door jam indicates 8.0, I'd have them measured to confirm. Either way a 275 tire is way too wide for an 8 or 8.5 rim according to most tire/wheel charts. Most sources appear to recommend a 9.5 size wheel for a 275 tire. I'm running 275s on my other vehicle (BMW) but on 10 inch wheels.

 

[cokeaddict]

Every source I've seen indicates your wheel size should be 8.5 width. Since your door jam indicates 8.0, I'd have them measured to confirm. Either way a 275 tire is way too wide for an 8 or 8.5 rim according to most tire/wheel charts. Most sources appear to recommend a 9.5 size wheel for a 275 tire. I'm running 275s on my other vehicle (BMW) but on 10 inch wheels.

thanks! Yup 275 measuring rim is 9” but pirellis rim range is 8.5-10 so I’m going off of that. But I’ll be getting wider rims next year anyways, I have to get tires now. Down to 5/32 and don’t want to risk it through winter. love the look of those wider tires on bimmers!

 

[gphin]

thanks! Yup 275 measuring rim is 9” but pirellis rim range is 8.5-10 so I’m going off of that. But I’ll be getting wider rims next year anyways, I have to get tires now. Down to 5/32 and don’t want to risk it through winter. love the look of those wider tires on bimmers!

I just put a set of Pirelli Scorpion A/S 3 on our CX9. Very happy with performance.

 

[cokeaddict]

I just put a set of Pirelli Scorpion A/S 3 on our CX9. Very happy with performance.

Awesome! Those are exactly the ones I was looking at so good to know