E60 Discussion Anything and everything to do with the E60 5 Series. All are welcome!

Violating Manufacturer's Direction

Thread Tools
 
Search this Thread
 
Old 04-14-2010, 05:08 AM
  #1  
Members
Thread Starter
 
GregBrand's Avatar
 
Join Date: Apr 2009
Posts: 216
Likes: 0
Received 0 Likes on 0 Posts
Default

What are the consequences of violating the manufacturer's "rotation direction arrow" stamped on a tire? Loss of traction? Tire explodes? Tire disintegrates? I have Pilot Plus A/S Sport 275 x 40 x 18 on the rear and am starting to see excessive wear on the inside due to BMW camber setting.

In another thread members discussed some premature wear, on the rear, from the BMW camber. Could reversing the direction of rotation balance the uneven wear on the rear?
Old 04-14-2010, 05:17 AM
  #2  
Members
 
spandex's Avatar
 
Join Date: Dec 2008
Location: London, UK
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
Default

Usually the tread is directional to help it shed water when driving in the wet... Changing the direction of rotation would probably affect the handling in poor weather. There would probably also be an increased risk of aquaplaning on any standing water.

Personally I wouldn't risk it just to save a few pennies. I'd be more inclined to try to sort out the cause of the uneven wear.
Old 04-14-2010, 05:27 AM
  #3  
Senior Members
 
protams's Avatar
 
Join Date: Apr 2007
Location: Vilnius
Posts: 291
Likes: 0
Received 0 Likes on 0 Posts
My Ride: 530iA 04
Default

It`s not a camber, it`s dead alignment.
Old 04-14-2010, 05:36 AM
  #4  
Contributors
 
pjinca's Avatar
 
Join Date: May 2009
Location: SoCal
Posts: 10,496
Likes: 0
Received 2 Likes on 2 Posts
My Ride: 2008 550I LOADED, all options except HUD and NV
Default

If your tires are directional (they would have an arrow indicating proper direction) then the best way to rotate them would be to swap the rears (left to right and right to left), however, this would mean having a tire shop swap the wheels on the rims as well since simply moving the tires to the opposite side would make them turn in the wrong direction. It is cheap to do, most tire shops will charge around $10 per wheel for this. This would ensure you wear the tire's inside edge more evenly since you'd be using both edges of the tire and thus get more wear (miles) out of the tires.
Old 04-14-2010, 05:37 AM
  #5  
Contributors
 
pjinca's Avatar
 
Join Date: May 2009
Location: SoCal
Posts: 10,496
Likes: 0
Received 2 Likes on 2 Posts
My Ride: 2008 550I LOADED, all options except HUD and NV
Default

Originally Posted by protams
It`s not a camber, it`s dead alignment.

That is not exactly true, BMW specs are somewhere around 2 degrees of negative camber in the rear - meaning your tires run on the inside edge of the tire most of the time. WHile this improves handling it is terrible for tire wear.
Old 04-14-2010, 05:44 AM
  #6  
Senior Members
 
protams's Avatar
 
Join Date: Apr 2007
Location: Vilnius
Posts: 291
Likes: 0
Received 0 Likes on 0 Posts
My Ride: 530iA 04
Default

As i know ther`s a set of Ball-joints what cosing tire wear.
Old 04-14-2010, 06:58 AM
  #7  
Senior Members
 
salaki's Avatar
 
Join Date: Nov 2007
Location: Irving, TX (DFW)
Posts: 400
Likes: 0
Received 0 Likes on 0 Posts
My Ride: 05 545i 6MT
Default

Originally Posted by pjinca
That is not exactly true, BMW specs are somewhere around 2 degrees of negative camber in the rear - meaning your tires run on the inside edge of the tire most of the time. WHile this improves handling it is terrible for tire wear.
+1

-2.2 rear camber factory spec is too much unless I burn rubber in every single turn

Got mine d own to -1.8 w/ stock toe and it's been wearing out evenly.
The handling still feels pretty good too - easier to do sideways
Old 04-14-2010, 07:15 AM
  #8  
KAF
Contributors
 
KAF's Avatar
 
Join Date: Dec 2005
Location: Chippenham, Wiltshire UK
Posts: 1,261
Likes: 0
Received 0 Likes on 0 Posts
My Ride: F11 535i M-Sport,, Silver, Black Leather, LED Adaptive headlights
Model Year: 2015
Engine: N55
Default

Do not put them on against the directional arrow, it will mess up your wet grip big time and may also make you legally liable in the event of an accident.
Old 04-14-2010, 07:54 AM
  #9  
Contributors
 
flyingpuck's Avatar
 
Join Date: Oct 2007
Location: Thousand Oaks, California
Posts: 11,084
Likes: 0
Received 0 Likes on 0 Posts
My Ride: 2008 550i Jet Black on Black Leather, SAT with Paddles, Logic 7, Comfort Seats, NAV, Sport Package, PDC, Xenons, Sirius, Trinity 12W LED Angel Eyes, RPi GT Exhaust, M rear spoiler, ACS Roof Spoiler, Tinted Tail Lights, Bimmian Carbon Fiber Pillar Trim, Bimmian Shadow 550i emblem, RPi Scoop, E60 Forum Cling, Mtec bulbs in fog lights, Mtec 2W LED for License Plate Light Bulbs, K&N Filter, Bimmian LED Smoked Side Markers, Blackout roundels, Carbon Fiber Kidney Grills. Retired Rides - 1989 325i convertible, 1995 M3, 2002 X5, 2005 545i, 2008 X5 (Lemon)
Default

But just think about how fast and precisely you could now backup in the rain!!
Old 04-14-2010, 07:59 AM
  #10  
Members
 
545iBMW's Avatar
 
Join Date: Feb 2008
Posts: 181
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by flyingpuck
But just think about how fast and precisely you could now backup in the rain!!

I like the way you think.
Your left brain is definitely working at its fullest.


Quick Reply: Violating Manufacturer's Direction



All times are GMT -8. The time now is 01:35 PM.