3rd Gen General Discussion The place for non-technical discussion about 3rd Gen RX-7s or if there's no better place for your topic

Wheel gurus

Old 09-26-18, 07:39 AM
  #1  
Junior Member
Thread Starter
 
Alan(MD)'s Avatar
 
Join Date: Aug 2018
Location: Maryland
Posts: 28
Received 0 Likes on 0 Posts
Wheel gurus

I had a set of BBS RGRs for my Z32 and sold it to local buddy so I can but the BBS LMs. Everything worked out perfect on my end. My buddy wound up getting married and having a kid so he never used the wheels. He asked if I wanted to buy the RGRs back. The are 18x 9.5 all around. Offsets are +38 and +30. Both vehicles have the same lug patterns. Will these fit the RX7? I don't want them to poke out since I don't like the rocket bunny kits or the stance look. I'd plan on putting 265/35/18 tires on them.
if this doesn't work out I plan on getting the BBS wheels off a EVO X MR
Old 09-26-18, 10:23 AM
  #2  
Rotary Enthusiast
 
Testrun's Avatar
 
Join Date: May 2018
Location: South FL
Posts: 1,453
Received 253 Likes on 191 Posts
My rear offset is +30 and to me it is out a tiny bit too much. This is 18x9.5 and 275/35. The fronts are 18x8.5 +35 with 235/40. I think the fronts are perfect.


Old 09-26-18, 10:26 AM
  #3  
Rotary Enthusiast
 
Testrun's Avatar
 
Join Date: May 2018
Location: South FL
Posts: 1,453
Received 253 Likes on 191 Posts

Old 09-26-18, 10:37 AM
  #4  
Rotary Enthusiast
 
Testrun's Avatar
 
Join Date: May 2018
Location: South FL
Posts: 1,453
Received 253 Likes on 191 Posts
Hopefully someone will chime in. I think you need a 50 offset for the front @ 9.5 wide.
Old 09-26-18, 12:01 PM
  #5  
Eats, Sleeps, Dreams Rotary

iTrader: (19)
 
Natey's Avatar
 
Join Date: Aug 2004
Location: West Coast
Posts: 4,452
Received 1,407 Likes on 727 Posts
+35 at least with a roll will work. 30 is pushing it.

17 or 18x10 with a +45 is about perfect IMO. I run 17x 10 +48 with a 255/40 tire. Everything fits fine under my stock fenders and I don't rub at all.

I'm sure plenty of people here will tell us that you can run those wheels and be stoked and they're right. They WILL fit, but you're gonna need a roll and some camber to do so without rubbing, and that camber eats tires.
Old 09-26-18, 12:11 PM
  #6  
TANSTAFL

iTrader: (13)
 
alexdimen's Avatar
 
Join Date: Oct 2003
Location: Richmond, Va.
Posts: 3,770
Received 123 Likes on 82 Posts
Not claiming to be a guru, but I just studied up on this recently...

Download the wheel and tire sizing spreadsheet for FD that testrun is using.

265 35 18 is considered by many to be too tall for the front. People will tell you to keep the front tire height below 25" and for good reason.

I run 255 35 18 up front with +43 offset and had fender lip rubbing until adding -1.5 deg camber and new strut mounts. You will likely have some rubbing with a taller/wider tire + lower offset.

You can run 9.5's on a lower offset than 50, but you'll need to run a narrower tire. Offset drives tire width. 255's up front will be your best bet for unrolled fenders, but like I said I had minor rubbing with 255's on +43.
Old 09-26-18, 01:00 PM
  #7  
Rotary Motoring

iTrader: (9)
 
BLUE TII's Avatar
 
Join Date: Mar 2001
Location: CA
Posts: 8,209
Received 761 Likes on 504 Posts
18x9.5 +30 will fit in back with a 255/35-18 tire, but you will have to run on the higher end of stock range of negative camber (like -1.3 to -1.5 deg) to make sure it doesn't rub the fender lip on full compression. Or roll the fender lip under.

18x9.5+38 will fit up front with 255/35-18 tire, but you will have to run negative camber in excess of stock range of alignment settings (like -1.5 to -2.5 deg). Or roll the fender lip under; which in the front is a good precaution if there is any chance of tire touching on compression and turning as it will wrinkle the fender if tire hits unrolled fender.
Old 09-26-18, 01:01 PM
  #8  
Lives on the Forum

iTrader: (9)
 
ptrhahn's Avatar
 
Join Date: Feb 2002
Location: Arlington, VA
Posts: 9,022
Received 498 Likes on 272 Posts
Yeah, somewhat depends on tire size, lowering, fender rolling, and camber, but you should be able to run the +30 in the rear, and the +38 up front, maybe you want to run a 265/rear, 255/front combo.

P
Old 09-26-18, 01:07 PM
  #9  
Junior Member
Thread Starter
 
Alan(MD)'s Avatar
 
Join Date: Aug 2018
Location: Maryland
Posts: 28
Received 0 Likes on 0 Posts
Originally Posted by BLUE TII
18x9.5 +30 will fit in back with a 255/35-18 tire, but you will have to run on the higher end of stock range of negative camber (like -1.3 to -1.5 deg) to make sure it doesn't rub the fender lip on full compression. Or roll the fender lip under.

18x9.5+38 will fit up front with 255/35-18 tire, but you will have to run negative camber in excess of stock range of alignment settings (like -1.5 to -2.5 deg). Or roll the fender lip under; which in the front is a good precaution if there is any chance of tire touching on compression and turning as it will wrinkle the fender if tire hits unrolled fender.
So if I roll the fenders and run 255s all around, I should be good to go?
Old 09-26-18, 01:19 PM
  #10  
Rx7 Wagon

iTrader: (16)
 
Narfle's Avatar
 
Join Date: Nov 2002
Location: California
Posts: 6,988
Received 875 Likes on 548 Posts
Those are not good stock-FD fitments.
Old 09-26-18, 04:40 PM
  #11  
The Ancient

 
gmonsen's Avatar
 
Join Date: Mar 2001
Location: Pennsylvania
Posts: 2,629
Received 236 Likes on 146 Posts
While I'm not into the biggest tires, I run 18 X 9.5's +42 with 255 X 35 all round and it works very well and looks pretty good, imho.

Last edited by gmonsen; 09-26-18 at 04:43 PM.
Old 09-28-18, 03:30 AM
  #12  
Rotary Motoring

iTrader: (9)
 
BLUE TII's Avatar
 
Join Date: Mar 2001
Location: CA
Posts: 8,209
Received 761 Likes on 504 Posts
Alan(MD)

So if I roll the fenders and run 255s all around, I should be good to go?
Yup, if the wheels are worth more to you than the car just roll the fenders and make them fit.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
OneRotor
Suspension/Wheels/Tires/Brakes
2
07-27-08 03:23 AM
midnightride42
2nd Generation Specific (1986-1992)
12
06-10-05 06:50 PM
Zyon13B
Suspension/Wheels/Tires/Brakes Archive
2
04-01-05 06:02 PM
Zyon13B
Suspension/Wheels/Tires/Brakes
14
08-12-04 11:29 AM
Zer0 Cylinder
2nd Generation Specific (1986-1992)
7
05-04-04 10:04 PM


Thread Tools
Search this Thread
Quick Reply: Wheel gurus



All times are GMT -5. The time now is 05:46 AM.