1st Gen General Discussion The place for non-technical discussion about 1st Gen RX-7s or if there's no better place for your topic

Suggestions

Thread Tools
 
Search this Thread
 
Old 07-01-14, 05:38 PM
  #1  
Junior Member

Thread Starter
 
MSTR X's Avatar
 
Join Date: Aug 2007
Location: Ottawa, Canada
Posts: 38
Likes: 0
Received 0 Likes on 0 Posts
Suggestions

I'm thinking of replacing my stock 14" 205*60's with 16"205*45's. I don't Autocross or anything other than Sun. drives. I love the look of the 16" XXR 522's, but really other than looks, what are the pro's and con's of going bigger wheels?

Thanks guys.


Robb
Old 07-01-14, 07:44 PM
  #2  
Impractical

iTrader: (1)
 
Spannerhead's Avatar
 
Join Date: Jan 2005
Location: Chattanooga, TN
Posts: 167
Likes: 0
Received 0 Likes on 0 Posts
Bigger wheels usually means more unsprung weight, which can have unfavorable consequences when it comes to suspension response.

Your tire size comes in at 1.8% smaller than stock, which means your speedo will be a bit optimistic, but going to 205/50-16s means you'll be over by 1.6%, so you're off either way.

Do you have an SE? If not, make sure XXR 522s are available with a 4x100 bolt pattern.
Old 07-01-14, 09:01 PM
  #3  
Out In the Barn


iTrader: (9)
 
KansasCityREPU's Avatar
 
Join Date: Mar 2005
Location: KC
Posts: 6,055
Received 1,015 Likes on 801 Posts
Originally Posted by Spannerhead
Bigger wheels usually means more unsprung weight, which can have unfavorable consequences when it comes to suspension response.

Your tire size comes in at 1.8% smaller than stock, which means your speedo will be a bit optimistic, but going to 205/50-16s means you'll be over by 1.6%, so you're off either way.

Do you have an SE? If not, make sure XXR 522s are available with a 4x100 bolt pattern.
I'm sure you meant 4x110
Old 07-01-14, 10:00 PM
  #4  
Impractical

iTrader: (1)
 
Spannerhead's Avatar
 
Join Date: Jan 2005
Location: Chattanooga, TN
Posts: 167
Likes: 0
Received 0 Likes on 0 Posts
Yes, that's it. Whatever the uber-rare bolt pattern for the 12A cars is. Thanks.
Old 07-01-14, 10:21 PM
  #5  
Senior Member

iTrader: (3)
 
JDuncan's Avatar
 
Join Date: Mar 2001
Location: Louisville, KY, USA
Posts: 702
Likes: 0
Received 1 Like on 1 Post
It will ride rougher and with smaller sidewalls like that, your rims will be more likely to get damaged by potholes and other such ilk. Anything else I could say would be subjective. Just get the wheels you want and enjoy your car.
Old 07-02-14, 05:21 PM
  #6  
Junior Member

Thread Starter
 
MSTR X's Avatar
 
Join Date: Aug 2007
Location: Ottawa, Canada
Posts: 38
Likes: 0
Received 0 Likes on 0 Posts
Thanks guys, I agree no real need to change size. Any suggestions on updated wheels that would look good on an SE? If I go 15" wheels, what tire size works?

Thanks again.

Robb
Old 07-02-14, 05:43 PM
  #7  
Impractical

iTrader: (1)
 
Spannerhead's Avatar
 
Join Date: Jan 2005
Location: Chattanooga, TN
Posts: 167
Likes: 0
Received 0 Likes on 0 Posts
Kosei K1
Konig Helium
Panasports

Most guys I believe go to a 205/55 on a 15 inch wheel size.
Old 07-02-14, 05:54 PM
  #8  
Senior Member
iTrader: (2)
 
Cameron38's Avatar
 
Join Date: May 2013
Location: Los Angeles
Posts: 542
Likes: 0
Received 0 Likes on 0 Posts
When I went up to 15" wheels on my SE, The guys at Mazdatrix told me to not go any bigger than 205/55-15 to avoid rubbing issues and speedometer problems. So I'm currently running 205/55-15 Kumho's on American Racing 15x7 rims. And you just can't go slapping any old 15x7 wheel on without making sure it's the correct offset etc. Several Websites such as TireRack can tell you which wheels will fit without any modifications to your car.
Old 07-03-14, 03:07 PM
  #9  
I have a rotary addiction

iTrader: (18)
 
NCross's Avatar
 
Join Date: Jun 2006
Location: Columbia, Tennessee
Posts: 4,815
Received 23 Likes on 22 Posts
205-50-15 or 205-40-16. Youll be unhappy with any other size. Think about it, stock 12a size is 13" 70 series, stock SE size is 14" 60 series. So every inch of wheel you gain you have to remove 10 from the sidewall height if you intend on keeping an accurate speedometer.
Old 07-07-14, 11:56 PM
  #10  
down, but not out

iTrader: (4)
 
RxTex's Avatar
 
Join Date: Apr 2011
Location: Santa Barbara, California
Posts: 318
Likes: 0
Received 1 Like on 1 Post
It all depends on offset and the look that you want. Tire sizing is pointless until you figure out the wheels first. A low offset wheel will need a smaller tire to clear the fender without modification etc..
Old 07-08-14, 12:03 AM
  #11  
RX for fun

iTrader: (13)
 
Siraniko's Avatar
 
Join Date: Aug 2001
Location: Socal
Posts: 15,926
Likes: 0
Received 22 Likes on 19 Posts
This when a 3-piece epsilon become really really handy since you can play with different/size barrel to find a nice fit. To date, im still having a hard time to convert backspace to offset (mainly used for FWD cars AFAIK)
Old 07-08-14, 09:56 AM
  #12  
Slowly but surely

iTrader: (9)
 
craaaazzy's Avatar
 
Join Date: May 2011
Location: GA
Posts: 1,678
Received 9 Likes on 9 Posts
I've always used the following site and their chart to convert between offset and backspace: https://www.rsracing.com/tech-wheel.html
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
93FD510
New Member RX-7 Technical
2
10-01-15 02:00 PM
baix2
Power FC Forum
1
09-28-15 09:40 AM
lnlreaper
2nd Generation Specific (1986-1992)
2
09-27-15 09:59 AM
Broke_A_Baller
Race Car Tech
8
09-24-15 09:27 PM



Quick Reply: Suggestions



All times are GMT -5. The time now is 05:54 PM.