Tires wearing down the center, but pressure is on the low end

Eschmacher · 04-06-2019, 05:11 PM

Hey guys,

I've had a consistent issue with my 335i where the center of the rear tires wears much quicker than the outsides. The fronts wear evenly. I'm running 32psi front/33 rear because I like the way the car handles with this balance.

I've read lots of people recommend that I run 35-38 on the rears which the door sticker seems to agree with. Why is it that my rears wear down the center even though my pressures are lower that recommended? Wouldn't bumping the pressure up to 35-38 just make this issue worse?

For the record, I'm running Michelin PSS, 245/40 front, 265/40 rear (was 275/35).

Eschmacher · 04-06-2019, 05:15 PM

May have just answered my own question with some additional googling...
Apparently stiff sidewall tires can show the opposite effect under load, meaning the center wear is due to me under-inflating the tires. This is interesting, I'll have to bump my pressures up and see what happens.

wdeerfield · 04-08-2019, 09:00 AM

i run 34/37 on my MPS4S on my 19s and they handle and wear great. id recommend sticking to the door for tire pressures or slightly varying from that to have proper wear. oh and limit burnouts..

PabloK · 04-10-2019, 10:16 PM

I run 235/35/20 275/30/20 mps4s - even wear no issues

most common issue for this is a rim that is too narrow. what specs are your wheels?

328iX · 04-10-2019, 10:30 PM

I run 2 psi higher than sticker, but I do it for tire longevity + mpg, if i wanted more handling oriented setup i'd do at the recommended psi or 1-2psi below that.

I've chucked my car into some corners too at the higher psi and never have any traction issue or noise coming from my tires.

Eschmacher · 04-11-2019, 08:07 AM

Quote:

Originally Posted by PabloK

I run 235/35/20 275/30/20 mps4s - even wear no issues

most common issue for this is a rim that is too narrow. what specs are your wheels?

18x8.5 +32 front, 18x9.5 +45 rear
245/40/18 front, 265/40/18 rear

Pretty sure it's not too narrow. 265 is the recommended width for a 9.5".

Eschmacher · 04-11-2019, 08:10 AM

Quote:

Originally Posted by 328dX

I run 2 psi higher than sticker, but I do it for tire longevity + mpg, if i wanted more handling oriented setup i'd do at the recommended psi or 1-2psi below that.

I've chucked my car into some corners too at the higher psi and never have any traction issue or noise coming from my tires.

The picture you attached is the normal conventional thinking regarding tire pressures and wear patterns, but the issue is (or was) that I run through the center of my tires with low pressure, not high.

PabloK · 04-20-2019, 02:58 AM

Quote:

Originally Posted by Eschmacher

Quote:

Originally Posted by PabloK

I run 235/35/20 275/30/20 mps4s - even wear no issues

most common issue for this is a rim that is too narrow. what specs are your wheels?

18x8.5 +32 front, 18x9.5 +45 rear
245/40/18 front, 265/40/18 rear

Pretty sure it's not too narrow. 265 is the recommended width for a 9.5".

Get them rebalanced new shop

04-06-2019, 05:11 PM	#1
Eschmacher Car Hypochondriac 335 Rep 901 Posts Drives: 2014 335i M-Sport Estoril Blue Join Date: Feb 2017 Location: Sterling, VA iTrader: (0) Garage List 2014 BMW 335i [0.00]	Tires wearing down the center, but pressure is on the low end Hey guys, I've had a consistent issue with my 335i where the center of the rear tires wears much quicker than the outsides. The fronts wear evenly. I'm running 32psi front/33 rear because I like the way the car handles with this balance. I've read lots of people recommend that I run 35-38 on the rears which the door sticker seems to agree with. Why is it that my rears wear down the center even though my pressures are lower that recommended? Wouldn't bumping the pressure up to 35-38 just make this issue worse? For the record, I'm running Michelin PSS, 245/40 front, 265/40 rear (was 275/35). __________________ Power mods: VRSF IC/Catted DP - FTP CP/BP - AFE Cat-back - BM3/XHP - Dorch S2 Handling mods: Koni yellow - Eibach prokit - Millway street - M Performance LSD - M3 brakes - EBC bluestuff Exterior: Euro LCI tail lights - Shitty ECS CF spoiler - Chinese M performance diffuser Interior: Bavsound stage 1 and subs - custom trunk sub by Mike1327
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04-06-2019, 05:15 PM	#2
Eschmacher Car Hypochondriac 335 Rep 901 Posts Drives: 2014 335i M-Sport Estoril Blue Join Date: Feb 2017 Location: Sterling, VA iTrader: (0) Garage List 2014 BMW 335i [0.00]	May have just answered my own question with some additional googling... Apparently stiff sidewall tires can show the opposite effect under load, meaning the center wear is due to me under-inflating the tires. This is interesting, I'll have to bump my pressures up and see what happens. __________________ Power mods: VRSF IC/Catted DP - FTP CP/BP - AFE Cat-back - BM3/XHP - Dorch S2 Handling mods: Koni yellow - Eibach prokit - Millway street - M Performance LSD - M3 brakes - EBC bluestuff Exterior: Euro LCI tail lights - Shitty ECS CF spoiler - Chinese M performance diffuser Interior: Bavsound stage 1 and subs - custom trunk sub by Mike1327
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04-08-2019, 09:00 AM	#3
wdeerfield A family of bimmers 2745 Rep 7,741 Posts Drives: '18 G01 X3M40i Join Date: Jan 2012 Location: Clifton Park, NY iTrader: (0)	i run 34/37 on my MPS4S on my 19s and they handle and wear great. id recommend sticking to the door for tire pressures or slightly varying from that to have proper wear. oh and limit burnouts.. __________________ 2018 PB/Black G01 X3M40i \| 699M \| ZDA \| ZPP \| ZPX \| Maxton front lip \| X3M vents \| 15mm Spacers \| Diamond G20 style grills
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04-10-2019, 10:16 PM	#4
PabloK Lieutenant Colonel 597 Rep 1,805 Posts Drives: F30 Join Date: May 2013 Location: Orono iTrader: (1)	I run 235/35/20 275/30/20 mps4s - even wear no issues most common issue for this is a rim that is too narrow. what specs are your wheels? __________________ 2014 F30 335i / 2014 F31 328d / 2014 F22 m235i 2019 G05 5.0 / 2012 E70 X5 50i / 2007 X5 3.0is 2011 e93 M3 / 2009 E60 M5 / 2004 E46 M3 2017 Alpina B6 22 Ram Trx / 22 M5 CS
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04-10-2019, 10:30 PM	#5
328iX David 786 Rep 2,010 Posts Drives: 2015 328iX F31 Join Date: Nov 2018 Location: Temecula, CA iTrader: (0)	I run 2 psi higher than sticker, but I do it for tire longevity + mpg, if i wanted more handling oriented setup i'd do at the recommended psi or 1-2psi below that. I've chucked my car into some corners too at the higher psi and never have any traction issue or noise coming from my tires. Attached Images
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