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

Help! Changed front tire now lights on...

Thread Tools
 
Search this Thread
 
Old 04-01-2008, 06:47 PM
  #1  
Members
Thread Starter
 
zakattak20's Avatar
 
Join Date: Dec 2007
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
Unhappy

Hello All,

This will sound very newbie but I just recently changed my front drivers side tire to a general exclaim uhp tire and now the dynamic stability control (I believe thats what is what displaying) icon is flashing warning me. The icon picture display looks like one tire is taller than the other. The other three tires are toyos but the toyo on the passengers is of course the same size as the general uhp (245/18 in the fronts). I was trying to replace the drivers side front with the same toyo but they were unavailable. My suspension is off too of course, steering wheel is not center and sways off. Should I just get another general tire on the other side to even out ? Alignment, but is one tire really taller than the other even though the same size ? Any input would help, thank you in advance!
Old 04-02-2008, 05:30 PM
  #2  
Members
Thread Starter
 
zakattak20's Avatar
 
Join Date: Dec 2007
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
Default

can you anyone please help? just on what is causing this or what to do? thanks again
Old 04-02-2008, 05:55 PM
  #3  
Super Moderator
 
Gene's Avatar
 
Join Date: Jan 2008
Location: So. Cal (SFV)
Posts: 17,508
Likes: 0
Received 3 Likes on 3 Posts
My Ride: 2011.5 Alpine White E90 M3 | Black Novillo Leather | Carbon Fiber Leather Trim | ZCP | ZP2 | M-DCT | Navigation | Moonroof | 6FL Mods: TMS 12.5mm spacers all around l Hawk HPS Brake Pads l OEM M3 Edition Grills l Paint Matched Side Gills l Key Hole D
Default

I always thought it's better to change at least 2 tires at a time to have at least some sort of balance/symmetry? Did you reset/check the TPM's?
Old 04-02-2008, 06:21 PM
  #4  
Contributors
 
Westcoast M5's Avatar
 
Join Date: Feb 2006
Location: Vancouver, Canada
Posts: 586
Likes: 0
Received 0 Likes on 0 Posts
Default

It's dangerous to have two different tires!! Get an matching front tire asap!!
Old 04-03-2008, 04:16 AM
  #5  
Super Moderator
 
Iceman's Avatar
 
Join Date: May 2004
Location: FL
Posts: 18,253
Likes: 0
Received 0 Likes on 0 Posts
My Ride: F02 LCI Individual
Model Year: 2013
Default

Originally Posted by Westcoast M5' post='555177' date='Apr 3 2008, 03:21 AM
It's dangerous to have two different tires!! Get an matching front tire asap!!
Yep.

And that's why your car is trying to tell you something...
Old 04-03-2008, 06:57 AM
  #6  
Contributors
 
545felix's Avatar
 
Join Date: Jan 2008
Location: Miami
Posts: 1,212
Likes: 0
Received 0 Likes on 0 Posts
My Ride: 05 545/6
Default

Originally Posted by zakattak20' post='554586' date='Apr 1 2008, 10:47 PM
Hello All,

The other three tires are toyos but the toyo on the passengers is of course the same size as the general uhp (245/18 in the fronts).
um, you're missing a rather important number there. the middle number (245/40/18) is the height of the tire as a percentage of the width, so in this case 40% of 245mm. if that middle # doesn't match the 245/40/18 on the other front toyo there's your problem.

Even if they do match, manufacturers vary a little bit in sizes, but I wouldn't think that enough to throw off your steering. I'll be willing to bet you got a 245/35 or 245/45 General tire.

-felix
Old 04-03-2008, 01:07 PM
  #7  
Senior Members
 
new-kid's Avatar
 
Join Date: Jun 2005
Location: Scotland, UK
Posts: 279
Likes: 0
Received 0 Likes on 0 Posts
My Ride: E61 530d Touring, May 2004
Default

Its not just the rated tyre size that matters - it is the actual size also.

By maths, the distance a tyre goes per revolution is 3.14 x diameter. So if a new tyre has say 10mm tread and a worn one 2mm, then surely the new one will travel 8x2x3.14 = 50mm further per turn than the old one. Hence confusing the heck out of the ABS / traction control sensors.

Always change in pairs unless can match age, make/compound and size
Old 04-03-2008, 09:42 PM
  #8  
Members
 
530_nz's Avatar
 
Join Date: Apr 2007
Location: Wellington, New Zealand!!
Posts: 129
Likes: 0
Received 0 Likes on 0 Posts
My Ride: AmethystGrau '03 530i
Default

Get a picture of the error symbol and post it here.
Old 04-03-2008, 10:26 PM
  #9  
Members
Thread Starter
 
zakattak20's Avatar
 
Join Date: Dec 2007
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
Default

yes its a 245/35/18 but on both sides....so would you think getting of course the matching tire and an alignment for a start?
Old 04-03-2008, 10:31 PM
  #10  
Contributors
 
delje08's Avatar
 
Join Date: Mar 2007
Location: SF Bay Area, CA
Posts: 1,366
Likes: 0
Received 0 Likes on 0 Posts
My Ride: 545i
Model Year: 2004
Default

get the other matching side then reset your TPM. then you should be fine.


Quick Reply: Help! Changed front tire now lights on...



All times are GMT -8. The time now is 12:48 PM.