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I have a 2015 Mazda6i and Im trying to get some new Niche Wheels, i don’t know much about cars in general but I wanted to know what kinda wheels specs fits, the offset on the niche wheels are 35mm and Im not sure if they’ll work or not
241005
 

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Welcome to the forum!

There's a few different things to look at when getting new rims/tires. Sorry if any of this is trivial, you mentioned you're not really a car person so I figured I'd tell you everything.

The OEM (Originally Equipped from Manufacturer) sizes are:

Tires:
17s: 225/55R17
19s: 225/45R19

Rims:
17x7.5 , Offset +50
19x7.5, Offset +45

The 225/55/R17 translates to 225mm wide, the sidewall's height (aspect ratio) is 55% of the width, and a 17 inch inner diameter for fitting on the rim.

The 17x7.5 +50 translates to 17 in diameter rim, 7.5 inch wide rim, and +50 means the rim mounting is 50mm closer to the outside of the car than the center of the rim (basically, how far back/forward will the rim sit in the wheel well, where +50 means it sits inside more).

Using the manufacturer numbers and this awesome website, you can determine where the differences will be (and how much) if you're swapping rims/tires.

TL;DR - If you get a bigger rim, you'll want to get a smaller tire to compensate for that so they don't mess with your speedometer or rub or anything. There's a bit of wiggle room on most cars to increase the size without any issues. For example: I run on 20x8.5 E+35 rims with 255/35/R20 tires and they fit perfectly with zero negative effects, besides feeling the road a little more since the sidewall is thinner. So long as you get rims/tires within the range of the OEM, you'll be perfectly fine.
 

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Discussion Starter #3
Thank you for your response really helps! But just to be sure, these are the wheels Im trying to get and my tires are 19”
241007
I
 

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First thing I want to point out in case you didn't see it is that the bolt pattern is wrong. You want 5x114.3.

Rims will fit no problem. Just make sure you get a tire that's wider than OEM since the rim is 1.0" wider so the 225 would be stretched a little bit and might look weird (though some people prefer that look). Look into getting tires that are like 240 - 255, just make sure your aspect ratio is slimmed a little to 40 or 35 so the tire isn't way bigger than it needs to be. Use the wheel-calc link I put up to compare/contrast differences. It's a great tool that tells you everything at the bottom.
 

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What is the Mazda Hub Bore?

I was thinking 67mm.

So will a 66.5mm hub bore be too small to fit over a 67mm.

I've made this mistake before and it was an expensive one.
 

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What is the Mazda Hub Bore?

I was thinking 67mm.

So will a 66.5mm hub bore be too small to fit over a 67mm.

I've made this mistake before and it was an expensive one.
Oh man you're right, I didn't even see that! @PabloDinho make sure you double check that!!!
 

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First thing I want to point out in case you didn't see it is that the bolt pattern is wrong. You want 5x114.3.

Rims will fit no problem. Just make sure you get a tire that's wider than OEM since the rim is 1.0" wider so the 225 would be stretched a little bit and might look weird (though some people prefer that look). Look into getting tires that are like 240 - 255, just make sure your aspect ratio is slimmed a little to 40 or 35 so the tire isn't way bigger than it needs to be. Use the wheel-calc link I put up to compare/contrast differences. It's a great tool that tells you everything at the bottom.
I would NOT put a 225 on an 8.5" rim, the 235's i have on my 8" wheels are even with the rim and i wish i had gone with 245's instead.
 

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I would NOT put a 225 on an 8.5" rim, the 235's i have on my 8" wheels are even with the rim and i wish i had gone with 245's instead.
Sorry, I wasn't suggesting to do that, only that if he went with it they'd be stretched a bit and (personally) I hate that look and see no reason for it. I went with 255s on my 8" and think it's perfect.
 

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Sorry, I wasn't suggesting to do that, only that if he went with it they'd be stretched a bit and (personally) I hate that look and see no reason for it. I went with 255s on my 8" and think it's perfect.
Yea after i posted i realized you pretty much said the same thing, but left it since i was a bit more to the point lol. Next tire set im going wider cause i want the rubber sticking out past the rim.
 

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Yea after i posted i realized you pretty much said the same thing, but left it since i was a bit more to the point lol. Next tire set im going wider cause i want the rubber sticking out past the rim.
255s all day - I think they're perfectly flush. (y)
 

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Sorry, I wasn't suggesting to do that, only that if he went with it they'd be stretched a bit and (personally) I hate that look and see no reason for it. I went with 255s on my 8" and think it's perfect.
No rubbing on 255 size tire?
What offset are you running?
I'm about to buy new wheels and have been going back and forth about 8" vs. 8.5" and 235/245/255 tire size...
 

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No rubbing on 255 size tire?
What offset are you running?
I'm about to buy new wheels and have been going back and forth about 8" vs. 8.5" and 235/245/255 tire size...
my 18x8's before i put the car on the ground barely hit the rim, now that the tires are broken in, the rim sits outside a 235/40.
 

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No rubbing on 255 size tire?
What offset are you running?
I'm about to buy new wheels and have been going back and forth about 8" vs. 8.5" and 235/245/255 tire size...
All specs/Pics here sir! Byakuya's 2014 Grand Touring Shiro Shinobi

They fit flawlessly on stock height IMO - Love how the 20s fill the wheel well, love how the 8.5" wide and 255s with +35 Offset come right up to the fender line.

Oh and I should mention I don't go easy on corners and they're still perfectly fine.

Edit: Found a better image of how they fit, the fronts look like they're poking in the photo but in reality they're just like the backs.

241047
 

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You can buy 72.6 outer to 67.1 inner hub adapters on Amazon for about $15.00. Cheap investment to ensure good fit.
 
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