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-   -   15x7's or 15x8's or neither? (https://www.miataturbo.net/wheels-tires-78/15x7s-15x8s-neither-102411/)

marudy 12-15-2020 10:13 AM

Thanks for the feedback. Looking to buy some Advanti or Konig. Think I will put 205's there and maybe at some point 225's for the track or just the sake of it. But should mostly drive with 205s.

My problem is i can't find these rims locally, so i might have to import them. So trying to figure out if 7.5" would be a more appropriate choice for what I want to achieve.

Willem Spencer 12-30-2020 11:17 AM


Originally Posted by marudy (Post 1588662)
Thanks for the feedback. Looking to buy some Advanti or Konig. Think I will put 205's there and maybe at some point 225's for the track or just the sake of it. But should mostly drive with 205s.

My problem is i can't find these rims locally, so i might have to import them. So trying to figure out if 7.5" would be a more appropriate choice for what I want to achieve.

Go with 15x8's if you can find them. There are generally more offset options with 15x8's (I like to run +25), there's more flexibility in choosing tire size, you'll have a wider track, and you'll probably be able to set faster times. Plus with 205's on 15x8's, you'd have better turn-in feel compared to 205's on 15x7.5's.

That being said, 15x7.5's can be cheaper and lighter, and I have seen some people run 225's on them. Depends on how much you care about turn-in feel, grip, etc. I'm not sure how well 7.5's would handle with 225's; definitely not quite as sharp, as there would be more sidewall roll.

Anyway, I think 8" wheels would be a better option, but that might be different for you. It depends on availability, budget, what you're going to use the car for (if it's mostly street driving, you'll likely not notice much of a difference between the two, but you'd probably want 8's for track use), and how you want the car to look.

Keep in mind that I've never driven a Miata with 15x7.5's. I went from stock 5.5's to 6.5's to 8's. This is based on what I've read/heard/learned.

o1marc 05-18-2021 01:08 PM

I bought my Advanti Storm S1's from Goodwin and when asked what size they recommend, they didn't recommend the 8" over the 7" for daily driving.
https://cimg4.ibsrv.net/gimg/www.mia...87000f64ab.jpg

IMSTuner 05-21-2021 10:11 AM

Another option is FM wheels 15x8: 12.4 lbs, +36 offset,
https://cimg3.ibsrv.net/gimg/www.mia...1b04d558a9.jpg
https://cimg6.ibsrv.net/gimg/www.mia...90321f48eb.jpg

hammobekka 11-29-2021 06:47 AM

You can e-mail 949 for an update. I have three sets of wheels and have tested several combinations. water damage ceilling michigan A 205 on an 8” wheel is a bit stretched and does not ride well on the street.

Willem Spencer 11-29-2021 11:59 AM


Originally Posted by hammobekka (Post 1613298)
You can e-mail 949 for an update. I have three sets of wheels and have tested several combinations. A 205 on an 8” wheel is a bit stretched and does not ride well on the street.

Have you had any experience with 225's on 7" wheels? I'm tempted to throw on some 225 R888's on my 14x7 panasports. Hoping for a light and grippy setup, but I'm concerned it'll make the turn-in feel much worse.

LeoNA 11-29-2021 12:11 PM

I would go with a 205 on a 7" wheel. It's a perfect match. The R1R is wide 205 and might be a better choice then the R888, especially if you run on the street. Another good choice is the BFG Rival 1.5S.


Originally Posted by Willem Spencer (Post 1613308)
Have you had any experience with 225's on 7" wheels? I'm tempted to throw on some 225 R888's on my 14x7 panasports. Hoping for a light and grippy setup, but I'm concerned it'll make the turn-in feel much worse.


FitzMagic 01-12-2022 10:27 AM

I have a spare 15x8 6ul with less than 500 miles if anyone needs one.


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