BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      05-24-2014, 06:31 PM   #1
foghat
Captain
Canada
59
Rep
913
Posts

Drives: 2008 135i
Join Date: Jun 2009
Location: Great White North

iTrader: (1)

Would new rears help with traction?

Hey all,

These are my 255 PSS's. I can make them spin no problem in 3rd. I'd actually rather not be able to do that so easily...

Do you think new PSS's would help. I have not idea with tires - I'm not down to the wear bars yet, but...

thoughts?

Appreciate 0
      05-24-2014, 07:06 PM   #2
Freon
Major
United_States
81
Rep
1,051
Posts

Drives: 2009 135i
Join Date: Nov 2007
Location: Indianapolis

iTrader: (3)

I don't think those are worn nearly enough to be an issue.
__________________
2009 BMW 135i 6MT Sport, AFE intake, Cobb AP, Apex 18x8.5+9.5, 255/275 PSS
Appreciate 0
      05-24-2014, 08:21 PM   #3
Pig Farmer
Major
340
Rep
1,293
Posts

Drives: E92M
Join Date: May 2010
Location: Florida

iTrader: (0)

My experience with PSSs is that the grip starts to fall off before the tread is completely spent. And once the grip goes, the tread wears out much faster, but that could be the result of the tire spinning more frequently.
Appreciate 0
      05-24-2014, 08:59 PM   #4
foghat
Captain
Canada
59
Rep
913
Posts

Drives: 2008 135i
Join Date: Jun 2009
Location: Great White North

iTrader: (1)

Ya. I dunno. I can break traction pretty much at will 1st to 3rd. Even in 3rd I can do it without even 'trying'. Honestly it is frustrating. I just want to be able to put the power down and go.
Appreciate 0
      05-24-2014, 09:19 PM   #5
Stohlen
Major
64
Rep
1,267
Posts

Drives: AW 135i
Join Date: Aug 2012
Location: Waterford, Mi

iTrader: (2)

Garage List
2008 BMW 135i  [5.66]
PSS tires are not really the greatest imo. Not sure why everyone swears by them when there are better performing tires out there. To improve rear grip, you need a wider/taller tire with a lower air pressure. If you're running A 255/19, that could explain some of your troubles. A 265/35/18 would be much better size (note: I have no idea what tire you're actually running aside from 255s.)
Appreciate 0
      05-25-2014, 09:45 AM   #6
foghat
Captain
Canada
59
Rep
913
Posts

Drives: 2008 135i
Join Date: Jun 2009
Location: Great White North

iTrader: (1)

Quote:
Originally Posted by Stohlen View Post
PSS tires are not really the greatest imo. Not sure why everyone swears by them when there are better performing tires out there. To improve rear grip, you need a wider/taller tire with a lower air pressure. If you're running A 255/19, that could explain some of your troubles. A 265/35/18 would be much better size (note: I have no idea what tire you're actually running aside from 255s.)
255/35/18 on stock wheels

Will 265 fit without issue?

What tire do you recommend? I know there are stickier tires out there, but thought the PSS offered the best performance/longevity combination.
Appreciate 0
      05-25-2014, 09:52 AM   #7
Rogo
Private
Rogo's Avatar
Canada
6
Rep
80
Posts

Drives: 2012 135i DCT
Join Date: Mar 2014
Location: Place

iTrader: (0)

I too am interested in this. I know its terrible I am still on stock RFT (I don't have a big money tree in the yard so I am waiting till they need replacing (had 6mm front and new rears at CPO delivery).

Afaik(and I may be wrong), widest on stock wheels is 225 and 255....if wider will safely fit I imagine more people would do it and seems the most commonly praised setup is the 225/255 PSS.
Appreciate 0
      05-25-2014, 10:39 AM   #8
Pig Farmer
Major
340
Rep
1,293
Posts

Drives: E92M
Join Date: May 2010
Location: Florida

iTrader: (0)

Quote:
Originally Posted by Rogo View Post
I too am interested in this. I know its terrible I am still on stock RFT (I don't have a big money tree in the yard so I am waiting till they need replacing (had 6mm front and new rears at CPO delivery).

Afaik(and I may be wrong), widest on stock wheels is 225 and 255....if wider will safely fit I imagine more people would do it and seems the most commonly praised setup is the 225/255 PSS.
Compared to the stock RFTs, the PSSs will feel like r-comps. I wouldn't put a 265 on a 8.5" OEM wheel. Not for fear of the tire coming off the wheel, but because of the additional lateral squirm that you will feel with the additional side wall flex. This is less of an issue with the rears, but still not optimal.

Another point... I've noticed that PSSs don't really benefit from lower tire pressure. Yes this is counter intuitive, but I know my tires need a few PSI when I start to feel them slip. I'm not a tire engineer but think this has something to do with the shape of the side wall which tends to balloon a little more than most compatibly sized tires (especially if you go to an oversized tire). I suspect that keeping the tire pressure firm stretches the tire and maximizes the contact patch. In addition, the PSSs can get pretty greasy when they get overheated, and low tire pressure adds heat.

Okay final thought... Running excessive negative camber on the rear will limit your straight line grip.

Last edited by Pig Farmer; 05-25-2014 at 10:45 AM..
Appreciate 0
Post Reply

Bookmarks


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 Off



All times are GMT -5. The time now is 05:52 PM.




1addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST