Then they will not work for you. At all.
Not even close.

Are you looking for straight line traction? You'll be limited to Mickey Thompson ET streets in either the 225-50-15 or the 275-50-15 but I don't know that the bigger 50s will work on a 15X9 with rolled fenders. Probably need flares or you're looking at the 225-50-15. And in that case you can just go with the 15X8.

Yea I'm just trying to go straight but If I can do 225/50/15 I wouldn't mind rolling my fenders but it would probably have to be at stock hight I'm guessing!

This may help you. this is a horrible pic but you will get the idea. Theses are 16X10 "0" offset or 5.5" backspace what ever you want to call them. They stick out almost two inches in the back and 1.75" in the front. This is with no camber adjustment and the car is only 2.5" lower than stock. I will be running N2 flares so they will fit perfect for that. If you buy a 9" wide wheel with a zero offset they will only be 1/2" less than these on the out side. I think the most you could get away with and use is 8" 0 offset.m Sorry for the horrible pic. Oh and these are 205/50R16 tires stretched like a champ.

https://www.miataturbo.net/attachmen...ine=1334000100

Straight line you need to worry about compound, sidewall, and diameter.....
Not trying to stick failsaus uber whide rims with horrible offset on the rear.

Alright, I'll give a serious answer since it looks like you didn't know how horrible of a offset 0 is.

Try to stay away from the ebay XXR wheels, they're not the strongest or prettiest. There's a big number of $95-$130 15" wheels out there, including a 7" 6ul. There are a few 8" wheels even.

ON RIM SIZE:
With 7" rims, you're maxed at 205s, or ballooned 225s, which we'll make fun of your for too.

With 8" rims, you're golden. 205s are barely stretched (but we won't laugh), 225s are right at home.

With 9" rims, you'll be faster with the 225 vs. the 225 on a 8", but you can't (shouldn't) fit all the bargain 205 tires.

With 10" rims, you're baller. 225s are slightly stretched (we won't laugh), but now you can fit amazing 245 tires, which are hardly available currently.

ON TIRE WALL SIZE:
205s are easy, just buy 205/50-15s, there are plenty of options and it's a perfect fit. For 225s, stock diameter is 225/45-15, but you only have race tires available, the cheapest being RS-3s, which are constantly sold out and still $120(?) each. You can fit 225/50-15s, which have a few sub $100 options, but they'll obviously be taller than ideal. You will have to run higher suspension settings, but you can definitely be lower than stock.

Here's me on 225/50s on 7" wheells, KYB AGX shocks, FM lowering springs, NB hats, and .66" spring spacers:
https://www.miataturbo.net/attachmen...ine=1334005052

And with stock suspension:
https://www.miataturbo.net/attachmen...ine=1334005052

That top image is about as low as you can go on stock fenders, I had the liners removed and a few tabs bashed out of the way, but otherwise, no roll or pull. Any lower and they'd rub. Notice the ballooning of the 225s on a 7" rim, as well as the relatively conservative offset, I believe -36. Imagine if they stuck out another 1.4" (0 offset), you probably would have to run stock suspension.

More images:
205s on 8" rims, notice just tiny bit of stretch. Also notice how much smaller in diameter they look vs. the 225/50s.

https://www.miataturbo.net/attachmen...ine=1334005384

225/45 with a 9". See how perfect the sidewall is?

https://www.miataturbo.net/attachmen...ine=1315236937

Not a great picture, but I think these are 245s on 10" rims, notice no stretch, and notice the flares:

http://i228.photobucket.com/albums/e...1/P3042414.jpg

Thanks for the pics I live the way the 225/45s look. Fenders do look rolled but pretty clean look. Not much camber I was looking at those rims too, what offset are those?

Which one, the white with bronze wheels? Those are here:

https://www.miataturbo.net/showthrea...t=60232&page=2

Yea those are nice they're +25 offset not much lip but they look good!

Do me a favor, PLEASE.... Don't talk about how much lip a wheel has. I don't want to shoot myself in the foot for sticking my neck out :)

The 6UL is god around here, and for good reason. The 225/45 works GREAT on the 15x9's. The 205's work GREAT and 225/45's work well on the 15x8's.

Curly, I'm glad you made the switch. Those 225/50's looked horrid on your little smurf compared to the rest.

Worrying about how much lip a wheel has is like worrying if your new dildo will be big enough to fill the cavern in your ass.

what??? lip is sick bro. nothin wrong with a bro wantin their rims to look tyte

205/50 on 15x9
https://www.miataturbo.net/attachmen...ine=1334081226

https://www.miataturbo.net/attachmen...ine=1334081226

https://www.miataturbo.net/attachmen...ine=1334081226

https://www.miataturbo.net/attachmen...ine=1334081226

See I say no ideal. It's too much stretch for me, and when I was buying wheels, ignoring money, I didn't want to look retarded every time I used 205 tires, I just don't like that look. Since 8" also worked great for 225s, I went with them.

I'm sure they worked great, so I guess it's just an aesthetics thing for me.

I'm not hatin' on the 6ul they're sick rims what are they selling for? im not a very picky person so if they're decent lookin rims for a good price I'll rock'em!

I had 15x8 +15 offset with 205 star specs for daily use. Only a fender roll needed @ 12.25" height. Mild camber. Pretty grippy for daily/autox use. Back then they were sportmax wheels.

Does your mother still breast-feed you?

If I see this dumbass thread there the ban hammer will come down from my hand like panties off a Vietnamese hooker.

That being said....

If you want traction get the right damn offset...+36. Or get the 949 racing 15x10 and some 235 toyos or some crazy $$$ Avons.

You know what thanks everyone for you're input and info it will definitely help me with my decision for which rim/tire combo I will choose! Greatly appreciated!