Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8, 17x9

Show off your lightweight high-performance wheels and see here what they look like on your Mazda before you buy.

Re: Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8,

Postby Irlrules » Tue Nov 27, 2018 9:27 am

So, on a 90 Miata, SFM JV6 swap, BC Racing coil-overs run at max height adjustment which should drop me under 1 in., Torsen 3.90 rear. With 30 mm wide fender flares, if I run 235/40R17s on 17x8 rims, what offset will help fill the flares without rub.
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Re: Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8,

Postby Brian » Tue Nov 27, 2018 9:49 am

Sorry, that 17 inch combo does not play on the 90 miata, just too much diameter at 24.3 inches. The way to wider rubber on the ground for a fast 90 Miata is with wider 15 inch. Go 15x10 since you got flares with 245/40/15 tires. Below is our Global Time Attack winning 90 with over 300 HP E85 fuel LFX V6, beat EVERYTHING this year on street tires from Porsche to Vette to Viper....and did it on 15 inch. See our new 15x10 Konig Dekagram in particular.

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Re: Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8,

Postby Irlrules » Tue Nov 27, 2018 10:34 am

How about if I maintain full ride height? I am looking for an effective gearing drop with a larger dia. tire. Fenders will be cut open under flares.....
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Re: Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8,

Postby Brian » Tue Nov 27, 2018 10:46 am

Irlrules wrote:How about if I maintain full ride height? I am looking for an effective gearing drop with a larger dia. tire. Fenders will be cut open under flares.....



Diameter is the issue, doesn't matter that flares on there, just don't have space above the tire for 24.3 inch diameter, it has no place to go. That car designed for tire about 22.7 inches give or take. Max diameter at stock height we have seen is 225/50/15 (about 23.6 inch) and even that limits your suspension travel, too easily rips into area above the tire to the inside of the space.
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Re: Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8,

Postby Irlrules » Tue Nov 27, 2018 11:13 am

Even with offset at about 20mm, spacing the tire out more? Just not a fan of how 50 series on 15s look
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Re: Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8,

Postby Irlrules » Tue Nov 27, 2018 11:28 am

Maybe 215/40R17?
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Re: Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8,

Postby Brian » Tue Nov 27, 2018 11:45 am

Dug around in my memory and files and remember a V8 conversion owner, went to 5 lug hubs to make it happen but got 17 inch 235 at the rear and 225/45 at the front. Roll/pull. Looks cleaner than I recall. These days we have 4x100 17x8 and 17x9 in our ND section wheels that didn't exist back then. Sorry, I don't recall what was done on suspension to keep tires from rubbing from issues with diameter, and I expect there was some rub.
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Re: Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8,

Postby Irlrules » Tue Nov 27, 2018 11:59 am

So, what offset to fill my 30mm flares? 15? 20?
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Re: Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8,

Postby Irlrules » Wed Nov 28, 2018 12:35 pm

I realize not many folks do 17s but, I like that look
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Re: Miata Wheels 'Dial In' & 'Storm 15x7, 15x8, 15x9, 17x8,

Postby Brian » Wed Nov 28, 2018 1:52 pm

Irlrules wrote:I realize not many folks do 17s but, I like that look


Okay, just understand our feedback from customers putting 17 inch wheels on NA/NB is generally not positive. We have certainly had customers do it, but usually they don't like actually driving the result on NA/NB (ride quality complaints mostly). Those cars not designed for 17 inch, tends not to work out and most customers going 17 inch on those early years tend to dump the 17 inch setup sooner or later. Nonetheless, because the latest ND generation Miata is designed for 17 inch, it means we have an ever growing list of 17x8 and 17x9 in 4x100 that can be used on the NA/NB. With your flares you likely want an offset in the 25 to 30mm range, all our ND 17 inch stuff is 35 to 45mm offset range. Could use a spacer but that's another reason to consider staying with 15 inch, we have good wide choices in the offset range that works with your flares.
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