225 50 15 on std NB8A wheels

banditmx5 · Postby **banditmx5** » Sat Mar 16, 2013 6:27 pm

Do 225/50/15's fit on NB8A with std alloys .
Car is std height.
?????
Cheers Rob :NA8:

16bit · Postby **16bit** » Sat Mar 16, 2013 6:42 pm

i wouldn't. too wide and tall.

you would need at least an 8 inch rim. pretty sure stock are 6 inch wide.

i would stick with 195 50's on the stock wheel.

if you have standard power there is plenty of grip to be had with good 195 50 tyres.

M1474 · Postby **M1474** » Sat Mar 16, 2013 8:01 pm

Stock rims are 6.5 I'm pretty sure. Even 195s really want a 7" rim.

Apu · Postby **Apu** » Sat Mar 16, 2013 9:07 pm

195 are max on a 6.5" rim. Check the recommended sizes from tyre manufacturers catalogues - Kumho and Federal come to mind.

Locutus · Postby **Locutus** » Sat Mar 16, 2013 9:58 pm

the tyre manufacturer will have min & max rim width recommendations for each tyre & size combo.

M1474 wrote:Stock rims are 6.5 I'm pretty sure. Even 195s really want a 7" rim.

stock NB8A comes with 15x6 rims and 195/50 tyres

Apu wrote:195 are max on a 6.5" rim.

stock NB8B comes with 16x6.5 rims and 205/45 tyres

:beer:

M1474 · Postby **M1474** » Sun Mar 17, 2013 2:19 am

Sorry I checked my rims and you are correct.

aka_juffa · Postby **aka_juffa** » Mon Mar 18, 2013 8:10 pm

Here is a link to Yokohama information on the recommended rim widths for their tyres.

http://www.yokohamatire.com/tires_101/c ... eel_width/

J.

mazmad · Postby **mazmad** » Sat Mar 30, 2013 7:08 am

That link suggests 6 - 8 in rims for 225/50/15, so on that basis the std wheels are good to go. :shock:

Are you going for performance or aesthetic benefit? If performance go the bigger wheels , plenty of evidence quoted in discussions elsewhere on this site about the benefits of bigger wheels. In which case a 225 is way too big.

If its cosmetic, narrower rim equal softer ride.

Edit...be aware you're gonna have to roll your rims too.

manga_blue · Postby **manga_blue** » Sat Mar 30, 2013 1:20 pm

I can only speak from track experience. 225/50R15 Yokohama medium compound A048R and A050R are the control tyres for the Porsche 944 Challenge series. Front runners in the series only use them for a day or two. After that they're a good source of cheap R-specs for MX5s and other small cars.

I know a few drivers who've fitted them as track tyres, even on 6" rims. They look a bit big but they still perform very well. Certainly haven't heard anyone complaining abut them, except that the medium compound is a bit too hard for us and they're better kept as summer tyres only. I recall one day at Phillip Island that a guy who's normally 2 or 3 secs slower than me was starting to push me and I asked him what he'd done. He said he'd just changed to the 944 tyres on mixed 6" and 6.5" rims.

I think there's way too much BS about tyres rolling on rims here. Fact is that if you've got a driver who is not particularly soft with his hands then going to a larger tyre on a small rim will often help his times. Basically you lose a little bit of turn-in response and gain a bit of grip.