225/35/19 265/30 tire pressures?

Dr. G · 07-17-2011, 11:33 PM

I'm running

225/35/19 on 8.5"
265/30/19 on 9.5"

Tires: Achilles ATR Sport

I was wondering what the recommended tire pressures for this setup would be?

kevin@bavarianx · 07-18-2011, 03:45 AM

It really depends on your climate. Since its summer now where its nice and warm/hot in Southern California we set all the tire pressures to 34 when we mount and balance wheels.

VMRWheels · 07-18-2011, 12:42 PM

We recommend anywhere from 35-38 PSI. This will all depend on driving conditions and climate. I would adjust accordingly to what you will be experiencing.

-Charles@VMRWheels

Syndicategt · 07-18-2011, 05:08 PM

Daily driving I do:
34 front
38 rear

If using them for the track I go:
32 Front
35 Rear

A lot depends on the type of tire, sidewall stiffness, climate, and driving style (higher PSI for highway/high speeds vs lower will get you more traction)

chrisw335i · 07-18-2011, 05:36 PM

i have mine set to 35 all around per the manual. seems to work for me. ive always heard that putting more in the rears induces understeer, and im trying to keep mine in a neutral state as much as possible

bmw325i · 07-19-2011, 07:00 PM

No expert but I would think that the wider rear tire would need a higher pressure to maintain an even tread pattern.

dragazn · 07-19-2011, 07:57 PM

Sticker on my driver side door said 225/35/19 --> 36 psi
255/30/19 --> 39 psi
So based on that you should increase your rear tire a bit since you are running 265 on the rear.

iflo · 07-20-2011, 08:09 AM

Dr. G, how are you liking the Achilles tires?

bmw325i · 07-20-2011, 11:22 AM

Quote:

Originally Posted by dragazn

Sticker on my driver side door said 225/35/19 --> 36 psi
255/30/19 --> 39 psi
So based on that you should increase your rear tire a bit since you are running 265 on the rear.

Exactly what I was thinking the wider rear tire needs more pressure to support the center on the tire.

07-17-2011, 11:33 PM	#1
Dr. G Major General 278 Rep 5,062 Posts Drives: Black e92 335i Join Date: Apr 2010 Location: Brampton, Ontario iTrader: (32) Garage List e92 BMW 335i [8.84]	225/35/19 265/30 tire pressures? I'm running 225/35/19 on 8.5" 265/30/19 on 9.5" Tires: Achilles ATR Sport I was wondering what the recommended tire pressures for this setup would be? __________________ JB4 / OSS Angel Eyes / Downpipes / F1-Racewerks FMIC / Custom Meth Kit / BMS DCI / ER Chargepipe / HKS BOV / BMS Meth Elbow / BMW Performance Exhaust / Carbon Fiber Inlay Quad Tips / 19" Miro 111 / Front Aero Lip / M3 Sides / VRS CSL Trunk / Mtech Rear / DD CF Quad Finned Diffuser / LCI Tails / BBK / Smoked Reflectors / F1 Euphoria LED Interior / License LED's / GT 5000k Corners / 5000k HID Fogs / Air Scoops / LED Turn Signals / FK Silverline Coilovers / HPA endlinks / Vibrant Resonators / Osram CBI 5000k D1S
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07-18-2011, 03:45 AM	#2
kevin@bavarianx Banned 33 Rep 812 Posts Drives: E36 M3 Join Date: Jul 2010 Location: Brea, CA iTrader: (3)	It really depends on your climate. Since its summer now where its nice and warm/hot in Southern California we set all the tire pressures to 34 when we mount and balance wheels.
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07-18-2011, 12:42 PM	#3
VMRWheels BimmerPost Supporting Vendor 2040 Rep 25,989 Posts Drives: BMW Join Date: Jun 2007 Location: Anaheim, CA iTrader: (4) Garage List 2013 BMW M3 [10.00] 2015 BMW M4 [0.00] 2013 BMW F30 [0.00] 2014 BMW F22 [0.00] 2013 BMW F06 [0.00]	We recommend anywhere from 35-38 PSI. This will all depend on driving conditions and climate. I would adjust accordingly to what you will be experiencing. -Charles@VMRWheels __________________ VMR\|Wheels \| 714.442.7916 \| sales@velocitymotoring.com \| www.velocitymotoring.com \| facebook \| flickr \| Instagram
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07-18-2011, 05:08 PM	#4
Syndicategt Brigadier General 153 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	Daily driving I do: 34 front 38 rear If using them for the track I go: 32 Front 35 Rear A lot depends on the type of tire, sidewall stiffness, climate, and driving style (higher PSI for highway/high speeds vs lower will get you more traction) __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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07-18-2011, 05:36 PM	#5
chrisw335i First Lieutenant 13 Rep 377 Posts Drives: 2007 BMW 335i Coupe Join Date: Jan 2011 Location: Columbus, Ga. iTrader: (3)	i have mine set to 35 all around per the manual. seems to work for me. ive always heard that putting more in the rears induces understeer, and im trying to keep mine in a neutral state as much as possible __________________ 2007 335i Coupe 6AT - Sports Package - Premium Package - Procede V5 Rev 2.5 - Vishnu PWM - Vishnu DCI - Vanguard Exhaust - AR Downpipes - Helix FMIC - 19" Avant Garde M6 Reps - Michelin Pilot Super Sports - Bilstein PSS10 - M3 Suspension Bits - M3 Sway - M3 Strut Brace - GP Thunder -Forge DV -15% Tint - Aero Lip
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07-19-2011, 07:00 PM	#6
bmw325i Major General 223 Rep 5,120 Posts Drives: 2006 BMW 325i Join Date: Oct 2010 Location: United States iTrader: (8)	No expert but I would think that the wider rear tire would need a higher pressure to maintain an even tread pattern.
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07-19-2011, 07:57 PM	#7
dragazn Major 43 Rep 1,071 Posts Drives: i Join Date: Apr 2008 Location: "" iTrader: (1) Garage List 2008 BMW 335i [5.76]	Sticker on my driver side door said 225/35/19 --> 36 psi 255/30/19 --> 39 psi So based on that you should increase your rear tire a bit since you are running 265 on the rear.
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07-20-2011, 08:09 AM	#8
iflo Second Lieutenant 21 Rep 203 Posts Drives: BMW 335i Coupe Join Date: Mar 2010 Location: Louisville iTrader: (1)	Dr. G, how are you liking the Achilles tires?
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