Wheels and Tires All things related to Miata Wheels and Tires.
Sponsored by:
Sponsored by:

15x8 15x9 tyre choice

 
Old 11-18-2018, 02:09 AM
  #1  
Newb
Thread Starter
 
Join Date: Dec 2017
Posts: 10
Total Cats: 0
Default 15x8 15x9 tyre choice

He guys,

I just bought myself a set of 6ul's for a decent price due to discontiued colors. (Here in europe they cost way higher than in the us).The only downside is that they are in 8 and 9 inches width and a offset off 36.
I've been searching for tyres and the option are little
I can only choose between the toyo R888 or the nankang AR-1

Now about the size's at first i was planning to run the nankangs with 245/40r15 on the 9's at back and 225/45r15 on te 8's at front.
I've read about under steering but will this also occur with the same offset, wheel diameter etc.

Does someone has anyone tried this and experience the understeer or something else?
Kekvh is offline  
Old 11-18-2018, 02:36 PM
  #2  
Junior Member
iTrader: (8)
 
Join Date: Jun 2012
Location: Indianapolis, IN
Posts: 481
Total Cats: 28
Default

Do yourself a favor and run 225's on 9 inch wheels on all 4 corners. This topic has been thoroughly documented in these forums. Try searching around a bit more
slammed200 is offline  
Old 11-18-2018, 02:57 PM
  #3  
SadFab CEO
iTrader: (3)
 
hi_im_sean's Avatar
 
Join Date: Sep 2012
Location: your mom's house phoenix, AZ
Posts: 4,546
Total Cats: 1,087
Default

You do not want to stagger wheels on a miata. square. 205 on 8, 225 on 9, 245 on 10.
hi_im_sean is offline  
Old 11-18-2018, 04:12 PM
  #4  
Newb
Thread Starter
 
Join Date: Dec 2017
Posts: 10
Total Cats: 0
Default

This came clear to me after i purchased the wheels
I first thought it wouldn't be an issue but after searching i become clear.
I was just still hoping that with a 245 rear 225 front setup the understeer wouldn't crazy, and hoped that somebody had experienced it.

Anyhow there is no turning back now sadly.
I think i am going to run 225/45 on all fours and hope the best off it.
Kekvh is offline  
Old 11-18-2018, 04:21 PM
  #5  
Junior Member
iTrader: (8)
 
Join Date: Jun 2012
Location: Indianapolis, IN
Posts: 481
Total Cats: 28
Default

Originally Posted by Kekvh View Post
This came clear to me after i purchased the wheels
I first thought it wouldn't be an issue but after searching i become clear.
I was just still hoping that with a 245 rear 225 front setup the understeer wouldn't crazy, and hoped that somebody had experienced it.

Anyhow there is no turning back now sadly.
I think i am going to run 225/45 on all fours and hope the best off it.
That would be your best bet, you might be able to loosen the rear sway bar, tighten the front or adjust the same direction with springs to make the best of it. The turn in on the fronts will lack a bit of feel everything else equal on this setup
slammed200 is offline  
Old 11-20-2018, 04:34 AM
  #6  
Senior Member
 
Join Date: Dec 2010
Location: Auckland, NZ
Posts: 951
Total Cats: 43
Default

Road or race?
mx5-kiwi is offline  
Old 11-20-2018, 02:29 PM
  #7  
Newb
Thread Starter
 
Join Date: Dec 2017
Posts: 10
Total Cats: 0
Default

Originally Posted by mx5-kiwi
Road or race?
Most off the time road and maybe an trackday once or twice a year..
Kekvh is offline  
Old 11-20-2018, 02:51 PM
  #8  
Senior Member
 
Join Date: Dec 2010
Location: Auckland, NZ
Posts: 951
Total Cats: 43
Default

unless you are hard core full race I agree with Slammed. Run the same size tyre, on road it wont be an issue. Track day, you might notice but if your not going for 10ths it should be fine.

Internet advice is usually to the nth degree of whats right (or wrong) there are many more degrees of gray that will still work okay.
mx5-kiwi is offline  
Old 11-20-2018, 03:04 PM
  #9  
Senior Member
iTrader: (1)
 
Join Date: Dec 2010
Location: Farmington Hills, MI
Posts: 1,153
Total Cats: 152
Default

225's all around. Obviously 225's on 15x9's all around is the best choice, but 225's with an 8 and a 9 will be way closer to ideal than a 225 and a 245. Basically a wider wheel will increase the cornering stiffness, which increases the response. Increasing response in the rear with respect to the front (ie: wider wheel in rear with same tire) will make it a bit more oversteer on turn in, but unless you are experienced behind the wheel on track, you probably wouldn't even notice.
acedeuce802 is offline  
Old 11-20-2018, 03:47 PM
  #10  
Newb
Thread Starter
 
Join Date: Dec 2017
Posts: 10
Total Cats: 0
Default

Alright thanks guys! The 245 225 option is a no go. Coming winter i am planning to rebuild the complete rear suspension and the wheels will be spraypainted and some 225 tyres will be ordered.
Cant wait to install them
Kekvh is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mx5-kiwi
Race Prep
7
07-23-2012 04:55 PM
mx5-kiwi
Race Prep
10
12-15-2011 02:18 PM
slowmx5
Suspension, Brakes, Drivetrain
10
07-22-2009 02:01 PM
Fergus
Media
18
06-30-2009 11:43 AM
rockdoc
General Miata Chat
3
04-09-2007 05:32 PM


Thread Tools
Search this Thread
Quick Reply: 15x8 15x9 tyre choice


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.