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I haven’t but I’m looking into it. The front wheels are more flush than the rear by about 10-15mm. So I’m debating whether to install just a set of 15mm on the rear and leaving the front or doing 15mm front and 25mm rear.

Spacers do change the leverage ratio of the suspension. So there’s the real chance that it’ll need stiffer springs.

And cosmetically the flush wheels may beg for a lower ride height.

I’m hoping a tuning house will take this on and give us a well tested total solution.
 

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Agreed wholeheartedly. The wrinkle here is that the lowest offset I can find in our 114x5 bolt circle and wheel width/diameter is the same +35et as our stock wheels (I haven’t done an exhaustive search…just tire rack and discount tire). And even if I did find one chances are the aesthetics won’t work. Sure I could go custom but for $1,000+ per wheel I’d rather just live with the OEM look and a spacer.

My plan is an adapter not a spacer. I don’t really want to get into wheel stud swap (I’m experienced in the process) So an adapter is better but alas, they aren’t possible below a certain thickness and even at that minimum thickness do you really want to take the risk of a failure.
 

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I’m also considering running a 9” wheel of similar or slightly smaller offset. It would add 1/2 of the width increase to the outer lip. That would do the same as adding a 12mm spacer. A 9” wide wheel is the maximum suggested for the 245
/45 size tire (ours are 9” wide). That’s a lot of money to gain 12-13mm of fender fill…thus the interest in a lower cost spacer/adapter.
 

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Agreed wholeheartedly. The wrinkle here is that the lowest offset I can find in our 114x5 bolt circle and wheel width/diameter is the same +35et as our stock wheels (I haven’t done an exhaustive search…just tire rack and discount tire). And even if I did find one chances are the aesthetics won’t work. Sure I could go custom but for $1,000+ per wheel I’d rather just live with the OEM look and a spacer.

My plan is an adapter not a spacer. I don’t really want to get into wheel stud swap (I’m experienced in the process) So an adapter is better but alas, they aren’t possible below a certain thickness and even at that minimum thickness do you really want to take the risk of a failure.
How about a +35 with a 9” wide wheel. That may give the look you are looking for. Not sure if you will run into issues with rubbing on the fenders or suspension components though with that wide of a wheel.
 

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I haven’t but I’m looking into it. The front wheels are more flush than the rear by about 10-15mm. So I’m debating whether to install just a set of 15mm on the rear and leaving the front or doing 15mm front and 25mm rear.

Spacers do change the leverage ratio of the suspension. So there’s the real chance that it’ll need stiffer springs.

And cosmetically the flush wheels may beg for a lower ride height.

I’m hoping a tuning house will take this on and give us a well tested total solution.
TireRack is usually pretty good at wheel fitments as they mount and test everything they list for each vehicle.
 

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2023 Mazda CX-50 Turbo Premium Plus
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Agreed wholeheartedly. The wrinkle here is that the lowest offset I can find in our 114x5 bolt circle and wheel width/diameter is the same +35et as our stock wheels (I haven’t done an exhaustive search…just tire rack and discount tire). And even if I did find one chances are the aesthetics won’t work. Sure I could go custom but for $1,000+ per wheel I’d rather just live with the OEM look and a spacer.

My plan is an adapter not a spacer. I don’t really want to get into wheel stud swap (I’m experienced in the process) So an adapter is better but alas, they aren’t possible below a certain thickness and even at that minimum thickness do you really want to take the risk of a failure.
Are you trying to stick to an OEM style wheel?
 

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Yes - mainly for cost reasons.

But even if we wanted different wheels, from an offset perspective there aren’t huge fender-filling gains to be made there. It’s in the neighborhood of 5-10mm. As mentioned earlier going to a 9” wheel would add 12.5mm of beautiful flush-ness but alas now you’re talking $1,000+ to make that happen and not many to choose from.

The cost of a spacer or adapter isn’t that great and would be an easy way to test.

I’ll likely wait until Corksport releases something.
 
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