Tyres on 435d 704m alloys

Vroombimmer · 09-25-2018, 10:52 AM

Hi all,

Had my 435d GC on 704m alloys nearly 7months now- and its the TPMS that has prompted me to look at the pressures this morning. I am aware the tyre sizes are staggered, but i have 225/40/19 on the fronts and 255/35/19 on the rears, is that correct? Should they not both be 35 ratio?

Got the car new from Sytner Oldbury

What pressures are people using for this setup?
Tyres are bridgestone potenza runflats

lethbridge · 09-25-2018, 10:59 AM

They are correct. The profile is a percentage of the width - so if you work it out both work out to c.90mm... The slight variation is I believe made to be exact by running * marked tyres.

I always tended to run the driver door sticker pressure on the rear for 3 occupants and the fronts at the full load pressure - otherwise the edges will wear abnormally on the fronts...

aquazi · 09-25-2018, 11:38 AM

Thats good going only getting it now.... mine warn me almost once every 3 months.... i think inflate mine as per the door sticker... 2.6bar or so.

Steveo.G · 09-25-2018, 01:01 PM

My tyres on my 2016 F30 335d have different profiles too.
255/30/20 & 225/35/20.
I had asked on here about pressures a few weeks back and a lot running 2.6bar

Vroombimmer · 09-25-2018, 01:11 PM

Brilliant. Thanks everyone for the responses. Think I'll go with 2.6bar all round

Ti Rich · 09-25-2018, 01:40 PM

Mine was from Sytner Oldbury too.

I find 2.5 bar front and 2.7 bar rear to work best for me. In between the normal and loaded figures.

09-25-2018, 10:52 AM	#1
Vroombimmer Private 31 Rep 81 Posts Drives: 435d Gran Coupe Join Date: Apr 2018 Location: Birmingham iTrader: (0)	Tyres on 435d 704m alloys Hi all, Had my 435d GC on 704m alloys nearly 7months now- and its the TPMS that has prompted me to look at the pressures this morning. I am aware the tyre sizes are staggered, but i have 225/40/19 on the fronts and 255/35/19 on the rears, is that correct? Should they not both be 35 ratio? Got the car new from Sytner Oldbury What pressures are people using for this setup? Tyres are bridgestone potenza runflats
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09-25-2018, 10:59 AM	#2
lethbridge Captain 470 Rep 784 Posts Drives: 2018 F80 M3 CP YMB Join Date: Feb 2012 Location: United Kingdom iTrader: (0) Garage List 2018 BMW M3 CP [10.00]	They are correct. The profile is a percentage of the width - so if you work it out both work out to c.90mm... The slight variation is I believe made to be exact by running * marked tyres. I always tended to run the driver door sticker pressure on the rear for 3 occupants and the fronts at the full load pressure - otherwise the edges will wear abnormally on the fronts...
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09-25-2018, 11:38 AM	#3
aquazi Major 461 Rep 1,303 Posts Drives: 18 M4C Join Date: Nov 2017 Location: Sutton coldfield iTrader: (0)	Thats good going only getting it now.... mine warn me almost once every 3 months.... i think inflate mine as per the door sticker... 2.6bar or so.
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09-25-2018, 01:01 PM	#4
Steveo.G Second Lieutenant 96 Rep 269 Posts Drives: F30 335d M Performance Join Date: Aug 2018 Location: North Lanarkshire iTrader: (0) Garage List 2016 F30 335d [0.00]	My tyres on my 2016 F30 335d have different profiles too. 255/30/20 & 225/35/20. I had asked on here about pressures a few weeks back and a lot running 2.6bar __________________ Current. 2016 335D STORM TROOPER! 2011 E70 X5 40D. 2005 E60 535D 395bhp 580lb/ft (Noteworthy) Evo V & VI. Jaguar s-type R. Yamaha raptor 700R
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09-25-2018, 01:11 PM	#5
Vroombimmer Private 31 Rep 81 Posts Drives: 435d Gran Coupe Join Date: Apr 2018 Location: Birmingham iTrader: (0)	Brilliant. Thanks everyone for the responses. Think I'll go with 2.6bar all round
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09-25-2018, 01:40 PM	#6
Ti Rich Major 310 Rep 1,314 Posts Drives: Porsche Macan S D Join Date: Jan 2008 Location: Dudley, West Midlands, UK iTrader: (0)	Mine was from Sytner Oldbury too. I find 2.5 bar front and 2.7 bar rear to work best for me. In between the normal and loaded figures.
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