Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > maXimum Tech > 3 Series > E30 (1983 - 1991)
User Name
Password


Welcome to Maxbimmer.com!

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Reply
 
Thread Tools Rating: Thread Rating: 22 votes, 5.00 average. Display Modes
Old 10-06-2012, 10:55 AM   #1246
E30325
1st Gear Newbie
 
Join Date: Oct 2012
Location: Vancity
Posts: 3
Thanks for the heads up. Pm'ed
E30325 is offline   Reply With Quote
Old 10-10-2012, 07:12 PM   #1247
Hal900x
1st Gear Newbie
 
Join Date: Oct 2012
Location: Southern California
Posts: 4
That...is one popular thread. New guy you can be new here. New to forums, new to BMW, new to cars, etc.

I ordered some 8" wheels with a +25 offset for my '90 325i. What kind of effect is that going to have on the geometry/handling of the car?
Hal900x is offline   Reply With Quote
Old 10-10-2012, 09:34 PM   #1248
L8 Apexr
2nd Gear Member
 
Join Date: Dec 2010
Location: huntsville
Posts: 121
Quote:
Originally Posted by Hal900x View Post
That...is one popular thread. New guy you can be new here. New to forums, new to BMW, new to cars, etc.

I ordered some 8" wheels with a +25 offset for my '90 325i. What kind of effect is that going to have on the geometry/handling of the car?
Nothing but good things.
L8 Apexr is offline   Reply With Quote
Old 10-11-2012, 01:07 PM   #1249
Mystikal
Moderator/Event-Coordinator
 
Join Date: Feb 2002
Location: Stance
Posts: 12,739
Quote:
Originally Posted by E30325 View Post
Mystikal,
Thanks for doing this. Awesome job

I'm having a custom set of BBS RS's put together. And need advice on what the offsets should be set at for fronts and rears.

Car - 1991 e30 325i 4 bolt
Suspension - full ground control coilovers
Wheel sizes I want - 16x9 rears with a 3" lip, 16x8 fronts with a 2" lip

What offset is going to get me flush without spacers?
Thanks in advance.
F 16x8 +10 195/45 or 205/45
R 16x9 +15 205/45 or 215/45

Only need a fender roll if you use the 215/45 rears. If you want super-flush drop the offsets by 5mm and use the 195/205 tires.
__________________
Mystikal is offline   Reply With Quote
Old 10-11-2012, 01:10 PM   #1250
Mystikal
Moderator/Event-Coordinator
 
Join Date: Feb 2002
Location: Stance
Posts: 12,739
Quote:
Originally Posted by Hal900x View Post
That...is one popular thread. New guy you can be new here. New to forums, new to BMW, new to cars, etc.

I ordered some 8" wheels with a +25 offset for my '90 325i. What kind of effect is that going to have on the geometry/handling of the car?
Unless they're 17" or larger you'll need small spacers to clear the front struts. 3-5mm is enough.

The tire choice for your new wheels is the important part. The tire size and model will dictate how the car will feel. What I'm saying is, don't cheap out on tires.
__________________
Mystikal is offline   Reply With Quote
Old 10-21-2012, 05:59 PM   #1251
SubDad
2nd Gear Member
 
Join Date: Apr 2012
Location: Ottawa
Posts: 162
E30 fitment, silly question of the day.

I've got an 1986 E30. It's all stock, unlowered and I'd prefer to keep it that way even though there's a huge fender gap at the back; looks like a pickup truck.

Car currently sits on bottlecaps (ET 33) front and rear with 195-70s on the front and 195-65s on the back.
Come spring I'll be wanting to fit tires on the 14x6.5 basketweaves (ET30) I spend the day cleaning up. I've spent some time on a tire size comparator site using the facts in the first post of this thread as the basis.

I think there's enough clearance on the front shock towers to fit 215-60s, can you confirm?

I think the radius would be close enough to stock that I wouldn't lose what little power the M20B20 has to offer and the larger width will ... look cooler without being too non-stock?

Would I have camber issues?

Do I worry too much?
Attached Images
File Type: jpg Green small left rear.JPG (72.7 KB, 55 views)
SubDad is offline   Reply With Quote
Old 10-22-2012, 12:00 PM   #1252
Mystikal
Moderator/Event-Coordinator
 
Join Date: Feb 2002
Location: Stance
Posts: 12,739
Quote:
Originally Posted by SubDad View Post
I've got an 1986 E30. It's all stock, unlowered and I'd prefer to keep it that way even though there's a huge fender gap at the back; looks like a pickup truck.

Car currently sits on bottlecaps (ET 33) front and rear with 195-70s on the front and 195-65s on the back.
Come spring I'll be wanting to fit tires on the 14x6.5 basketweaves (ET30) I spend the day cleaning up. I've spent some time on a tire size comparator site using the facts in the first post of this thread as the basis.

I think there's enough clearance on the front shock towers to fit 215-60s, can you confirm?

I think the radius would be close enough to stock that I wouldn't lose what little power the M20B20 has to offer and the larger width will ... look cooler without being too non-stock?

Would I have camber issues?

Do I worry too much?
It should just clear the front struts without spacers and won't threaten contacting anywhere else. The problem is finding decent 215/60 tires today.
__________________
Mystikal is offline   Reply With Quote
Old 10-22-2012, 06:08 PM   #1253
Hal900x
1st Gear Newbie
 
Join Date: Oct 2012
Location: Southern California
Posts: 4
Quote:
Originally Posted by Mystikal View Post
Unless they're 17" or larger you'll need small spacers to clear the front struts. 3-5mm is enough.

The tire choice for your new wheels is the important part. The tire size and model will dictate how the car will feel. What I'm saying is, don't cheap out on tires.
Well, after testing fitting yesterday it looks like they are clearing without spacers...by several human hairs. That was with the wheel jacked up, ofc. But I'm thinking I might get away with it, so long as the tire is kept flush or narrower. 205/50/15 perhaps? Was checking these out based on a recommendation from a NASA guy for his street car.

http://www.bigbrandtire.com/tires/DUNLOP/265024207

Too cheap? Too big?
Hal900x is offline   Reply With Quote
Old 10-22-2012, 06:55 PM   #1254
SubDad
2nd Gear Member
 
Join Date: Apr 2012
Location: Ottawa
Posts: 162
Thanks for your help 2 posts up, Mystikal.

Aside from 215/60 is there a better choice using the 14" basketweaves that would fill the wells better?

Anybody think that 215/60s would look stupid?
Should I keep it stock-stock with 195/60?

I really don't want to lower the car. I'm preserving it as a baseline comparison for those of you with lowered, supercharged, lightened, modified super-fast E30s.
Don't thank me, it's my service to the community.
SubDad is offline   Reply With Quote
Old 10-22-2012, 07:57 PM   #1255
supernaught
6th Gear Member
 
supernaught's Avatar
 
Join Date: Aug 2006
Location: Peterborough
Posts: 1,323
Send a message via MSN to supernaught
Stock height, why not go with some 215/70/14 Wranglers?
__________________

88 325IX TOURING DiamantSchwarz|89 325IX AlpinWeiss|88 325IX DiamantSchwarz
supernaught is offline   Reply With Quote
Old 10-22-2012, 08:31 PM   #1256
SubDad
2nd Gear Member
 
Join Date: Apr 2012
Location: Ottawa
Posts: 162

Unfortunately, the 70 series would suck all the torque out of my M20B20 and while I could wade across spring time fields it'd be at about 4 kph, with a grinding noise coming from my struts and clutch smoke boiling out the sunroof.

I'm starting to see why the guy I bought the 14" rims from replaced them with 15". They certainly looked good on his Touring, lucky guy.
SubDad is offline   Reply With Quote
Old 10-23-2012, 03:14 PM   #1257
GeMc
2nd Gear Member
 
GeMc's Avatar
 
Join Date: Aug 2012
Location: Oakville
Posts: 94
Quote:
Originally Posted by Hal900x View Post
Well, after test fitting yesterday it looks like they are clearing without spacers...by several human hairs. That was with the wheel jacked up, ofc. But I'm thinking I might get away with it, so long as the tire is kept flush or narrower. 205/50/15 perhaps?
I was going to say... my old 18" x 8" ET25 wheels fit no problem without spacers on my E30 struts (threaded with coilovers).
__________________

German Mechanics
2530 Speers Rd #5
Oakville, ON Canada
(905) 286-4362
Mon-Fri 9am - 5pm

www.GermanMechanics.ca

GeMc is offline   Reply With Quote
Old 10-26-2012, 12:51 PM   #1258
Mystikal
Moderator/Event-Coordinator
 
Join Date: Feb 2002
Location: Stance
Posts: 12,739
Quote:
Originally Posted by Hal900x View Post
Well, after testing fitting yesterday it looks like they are clearing without spacers...by several human hairs. That was with the wheel jacked up, ofc. But I'm thinking I might get away with it, so long as the tire is kept flush or narrower. 205/50/15 perhaps? Was checking these out based on a recommendation from a NASA guy for his street car.

http://www.bigbrandtire.com/tires/DUNLOP/265024207

Too cheap? Too big?
Buy a pair of universal 3mm 4x100 spacers for your fronts. You'll need that bit more clearance once the tires are on.

DZ101s are okay for dry weather, you'll probably like them in socal.
__________________
Mystikal is offline   Reply With Quote
Old 10-26-2012, 12:53 PM   #1259
Mystikal
Moderator/Event-Coordinator
 
Join Date: Feb 2002
Location: Stance
Posts: 12,739
Quote:
Originally Posted by SubDad View Post
Thanks for your help 2 posts up, Mystikal.

Aside from 215/60 is there a better choice using the 14" basketweaves that would fill the wells better?

Anybody think that 215/60s would look stupid?
Should I keep it stock-stock with 195/60?

I really don't want to lower the car. I'm preserving it as a baseline comparison for those of you with lowered, supercharged, lightened, modified super-fast E30s.
Don't thank me, it's my service to the community.
Keep it stockish, run 195/60 or 195/65 or 205/60.
__________________
Mystikal is offline   Reply With Quote
Old 10-26-2012, 12:54 PM   #1260
Mystikal
Moderator/Event-Coordinator
 
Join Date: Feb 2002
Location: Stance
Posts: 12,739
Quote:
Originally Posted by GeMc View Post
I was going to say... my old 18" x 8" ET25 wheels fit no problem without spacers on my E30 struts (threaded with coilovers).
The E30 strut has a slight inclination towards the inner body of the car as it goes up. That's why 17" and larger wheels will clear at 8" +25 while 16" and smaller will just touch.
__________________
Mystikal is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 10:56 PM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.