Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 05-22-2007, 05:37 PM
Fulltone74's Avatar
Fulltone74 Fulltone74 is offline
Officially Welcomed to the 'Fest
Location: Mountain View, CA
 
Join Date: Oct 2005
Posts: 1,066
Mein Auto: 98 BMW 540i-6speed
Optional size 255/40/17 on 17x8 wheels

Hi all:

I have the Composite 19 wheels on my 98 540i.
The "optional" rear tire size for my car is 255/40/17 with 235/45/17 up front.
However, all the wheels are 17x8 in front and rear.

From '99 thru '02, the 255/40/17 tire in back was mounted on a 17x9 wheel from the factory. which were either the "brilliiant line" wheel or the M-Technic Spoke 66 wheel in the 17" size. Unfortunately, there is no 17x9 version of the composite 19 wheel that was on the '97 to '98 cars.

Question is this: is 255/40/17 too much tire for a 17x8 wheel. The service tech at the dealer said that having an 8" wide wheel makes the sidewall bow in a bit where it mounts to the wheel. He said that this bowing effect makes the tire sidewall easier to compress and could compromise the steering response of the car.

Given that, I would think that if I stayed with my existing wheels, the car might actually feel better with 235/45/17 in back. Would you all agree with that?


Otherwise, the next best choice would be to go to the M-spoke 66 wheels to have 17x9 in back.

I would really love to go to the 18" M-pars for both looks and performance, but don't feel like spending $3K+ for the wheels and tires -- and I'm not in the mood to buy some lower grade E-bay replicas.
__________________
1998 BMW 540i 6-speed (SOLD)
Jet black on tan
Dinan springs, Dinan Koni dampers, Dinan front strut tower bar, M5 rear sway bar,
Dinan Stage-1 software, Dinan clutch, Dinan short throw shifter, CDV delete, Bosch Design III injectors,
Dice I-pod kit,
Hawk ceramic brake pads....

2001 BMW M5
Silverstone on Caramel
All stock.
Reply With Quote
Ads by Google
  #2  
Old 05-22-2007, 06:03 PM
540cmc's Avatar
540cmc 540cmc is offline
Officially Welcomed to the 'Fest
Location: Orlando, FL
 
Join Date: Oct 2004
Posts: 196
Mein Auto: 2001 540
Quote:
Originally Posted by Fulltone74 View Post
Hi all:

Question is this: is 255/40/17 too much tire for a 17x8 wheel. The service tech at the dealer said that having an 8" wide wheel makes the sidewall bow in a bit where it mounts to the wheel. He said that this bowing effect makes the tire sidewall easier to compress and could compromise the steering response of the car.

Given that, I would think that if I stayed with my existing wheels, the car might actually feel better with 235/45/17 in back. Would you all agree with that?

Otherwise, the next best choice would be to go to the M-spoke 66 wheels to have 17x9 in back.
The 255/40/17 will work just fine on an 8" wheel. I have run that size all around on a set of style 66 wheels (8" front / 9" rear) as my autocross set up for two years. With Falken RT-615s, the steering response was just fine and handling was much better than with the stock 235/45/17s up front.

I agree with same size all around if possible for better handling, however, I would go with the 255/40/17 all around over the 235/45/17 all around. Same size all around dials out some of the E39 understeer, gives better balance and larger is better in my opinion.

With that said, what you really need to do is buy the staggered Style 66 set I have listed in the classifieds for sale!
__________________
AFE intake, Stage 2 Dinan software, Dinan trans SW, 3.64 limited slip, Michelin Pilot Super Sports 265/35/18 all around on Dinan wheels, SuperSprint headers, Eisenmann race exhaust, Dinan Springs, M5 rear sway bar, Dinan strut bar, SS braided lines, Technical Graphite interior trim, M5 deadpedal, Titanium Silver / Grey, Black side moldings, debadged.
Reply With Quote
  #3  
Old 05-22-2007, 09:46 PM
Fulltone74's Avatar
Fulltone74 Fulltone74 is offline
Officially Welcomed to the 'Fest
Location: Mountain View, CA
 
Join Date: Oct 2005
Posts: 1,066
Mein Auto: 98 BMW 540i-6speed
Quote:
Originally Posted by 540cmc View Post
The 255/40/17 will work just fine on an 8" wheel. I have run that size all around on a set of style 66 wheels (8" front / 9" rear) as my autocross set up for two years. With Falken RT-615s, the steering response was just fine and handling was much better than with the stock 235/45/17s up front.

I agree with same size all around if possible for better handling, however, I would go with the 255/40/17 all around over the 235/45/17 all around. Same size all around dials out some of the E39 understeer, gives better balance and larger is better in my opinion.

With that said, what you really need to do is buy the staggered Style 66 set I have listed in the classifieds for sale!
I don't see your ad in the classifieds.. Is it someplace other than "wheels and tires"? I'm interested if they are in clean shape.
__________________
1998 BMW 540i 6-speed (SOLD)
Jet black on tan
Dinan springs, Dinan Koni dampers, Dinan front strut tower bar, M5 rear sway bar,
Dinan Stage-1 software, Dinan clutch, Dinan short throw shifter, CDV delete, Bosch Design III injectors,
Dice I-pod kit,
Hawk ceramic brake pads....

2001 BMW M5
Silverstone on Caramel
All stock.
Reply With Quote
  #4  
Old 05-22-2007, 11:12 PM
1Dreamer's Avatar
1Dreamer 1Dreamer is offline
Super Moderator
Location: A block off Sunset Blvd.
 
Join Date: Oct 2004
Posts: 7,363
Mein Auto: Fiver
Quote:
Originally Posted by Fulltone74 View Post
I don't see your ad in the classifieds.. Is it someplace other than "wheels and tires"? I'm interested if they are in clean shape.
Here you go. http://www.bimmerfest.com/forums/sho...d.php?t=188646

I bought a set of wheels from him and can tell you from personal experience he's a trustworthy seller if you decide to buy from him.
Reply With Quote
  #5  
Old 05-23-2007, 03:35 PM
540cmc's Avatar
540cmc 540cmc is offline
Officially Welcomed to the 'Fest
Location: Orlando, FL
 
Join Date: Oct 2004
Posts: 196
Mein Auto: 2001 540
1Dreamer,

Thanks for the kind words!
__________________
AFE intake, Stage 2 Dinan software, Dinan trans SW, 3.64 limited slip, Michelin Pilot Super Sports 265/35/18 all around on Dinan wheels, SuperSprint headers, Eisenmann race exhaust, Dinan Springs, M5 rear sway bar, Dinan strut bar, SS braided lines, Technical Graphite interior trim, M5 deadpedal, Titanium Silver / Grey, Black side moldings, debadged.
Reply With Quote
  #6  
Old 05-23-2007, 04:39 PM
99WAGON 99WAGON is offline
Officially Welcomed to the 'Fest
Location: VA.BEACH, VA AND FLORIDA
 
Join Date: Oct 2006
Posts: 158
Send a message via AIM to 99WAGON
Mein Auto: 1999 540IT
I HAD STYLE 32 ON MY WAGON, AND I HAD 255/40/17 IN THE REAR AND THE 235 SET UP IN THE FRONT AND MY WAGON ROAD GREAT AT ALL SPEEDS NO BOWING OF THE TIRE AT ALL
__________________
[SIGPIC]
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)
Today's Posts Search
Thread Tools
Display Modes

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 -7. The time now is 10:34 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms