Tyre Pressure 17" wheels

Maca44 · 11th October 2012, 13:40

Standard 17" on my EX & normally have tyres at 32psi all round but just wondered how high you can go to to improve MPG without ride being too harsh or causing damage to tyres.

See one person here has them at 40psi but this sounds very high or is it ?

MeganoOdles · 11th October 2012, 13:45

Unless your doing driving on the autobahn or racetrack, 30psi is fine for most road conditions!

Relic · 11th October 2012, 14:35

Run 35/36 on the diesels
But we are 100kg+ heavier on the nose.
Anything less than that and we starting bending wheels on the speedhumps.

Hypermilers use high pressures so the tyre bulges in the middle of the tread.. reduces the contact pad / grip / friction = increased MPG.
But it sacrifices grip.

Syx · 11th October 2012, 14:53

Quote:

Originally Posted by Relic

Run 35/36 on the diesels
But we are 100kg+ heavier on the nose.
Anything less than that and we starting bending wheels on the speedhumps.

Hypermilers use high pressures so the tyre bulges in the middle of the tread.. reduces the contact pad / grip / friction = increased MPG.
But it sacrifices grip.

And increases tyre wear.

Relic · 11th October 2012, 15:02

Yes ...nice bald patch in the middle.

firstcivic · 12th October 2012, 11:48

Quote:

Originally Posted by Relic

Run 35/36 on the diesels
But we are 100kg+ heavier on the nose.
Anything less than that and we starting bending wheels on the speedhumps.

Hypermilers use high pressures so the tyre bulges in the middle of the tread.. reduces the contact pad / grip / friction = increased MPG.
But it sacrifices grip.

is 35/36 on the diesels for normal everyday running about relic?

Relic · 12th October 2012, 12:34

Yes...supposedly 32 in the rear unloaded.
But handling seems fine to me at 35/36 too

11th October 2012, 13:40	#1 (permalink)
Maca44 Supporter Car: Silver Civic EX 1.8 Join Date: 14th March 2012 Location: Hampshire Posts: 486 Thanks given: 3 Thanked 39 Times in 34 Posts iTrader: (4)	17" wheels Standard 17" on my EX & normally have tyres at 32psi all round but just wondered how high you can go to to improve MPG without ride being too harsh or causing damage to tyres. See one person here has them at 40psi but this sounds very high or is it ?

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11th October 2012, 13:45	#2 (permalink)
MeganoOdles Car: Civic FK2 Nighthawk Black Join Date: 28th June 2010 Location: London Posts: 386 Thanks given: 104 Thanked 39 Times in 38 Posts iTrader: (1)	Unless your doing driving on the autobahn or racetrack, 30psi is fine for most road conditions!

11th October 2012, 14:35	#3 (permalink)
Relic Cockup Specialist Car: 2007 2.2 Type 'S' GT, Bronze Join Date: 31st August 2009 Location: uk Posts: 12,150 Thanks given: 737 Thanked 1,453 Times in 1,275 Posts iTrader: (0)	Run 35/36 on the diesels But we are 100kg+ heavier on the nose. Anything less than that and we starting bending wheels on the speedhumps. Hypermilers use high pressures so the tyre bulges in the middle of the tread.. reduces the contact pad / grip / friction = increased MPG. But it sacrifices grip.

11th October 2012, 15:02	#5 (permalink)
Relic Cockup Specialist Car: 2007 2.2 Type 'S' GT, Bronze Join Date: 31st August 2009 Location: uk Posts: 12,150 Thanks given: 737 Thanked 1,453 Times in 1,275 Posts iTrader: (0)	Yes ...nice bald patch in the middle.

12th October 2012, 12:34	#7 (permalink)
Relic Cockup Specialist Car: 2007 2.2 Type 'S' GT, Bronze Join Date: 31st August 2009 Location: uk Posts: 12,150 Thanks given: 737 Thanked 1,453 Times in 1,275 Posts iTrader: (0)	Yes...supposedly 32 in the rear unloaded. But handling seems fine to me at 35/36 too