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        General >> Problems >> Tyre Pressure
        
(Message started by: Christopher_Dean on Apr 20^th, 2006, 1:19pm)

Title: Tyre Pressure
Post by Christopher_Dean on Apr 20^th, 2006, 1:19pm

The dreaded MoT is just around the corner and as part of my pre-MoT service my local garage recommended that I fit four new tyres.

Some £260 later (Avon ZZ3 225/50 R16) I thought that I'd better check the tyre pressure. The manual states 29 psi for the front and 26 psi for the rear (under normal loading).

I set the correct pressure (when the tyre was cold) using a digital pressure gauge but the tyres look a little under inflated.

Am I being paranoid?

Cheers

Chris.

Title: Re: Tyre Pressure
Post by PeteB on Apr 20^th, 2006, 1:30pm

Mine too are the correct pressure and look a bit flat, I put it down to the sheer weight of the car. Shes a bit of a big girl after all ;D

Pete

Title: Re: Tyre Pressure
Post by scorpio_man on Apr 20^th, 2006, 1:48pm

hi there

i run 31 front, 29 rear. means you can run deeper into corners and the backend won't be quite as twitchy coming out! ;)

hth

Title: Re: Tyre Pressure
Post by mr._floppy on Apr 20^th, 2006, 1:52pm

Ditto, at even 32 psi my fronts still look like they could do with a bit more puff, which maybe explains why the power steering is pathetic and hardly " Light " .

Title: Re: Tyre Pressure
Post by Octavian_P on Apr 20^th, 2006, 2:16pm

Underinflation also reduces the mpg. I keep mine at ~33 front and ~34 back

Title: Re: Tyre Pressure
Post by mazzy_j on Apr 20^th, 2006, 2:48pm

34 at the back? Surely you would want a higher psi at the front because of the extra weight of the engine ??? I keep mine at 34psi at the front and 30psi at the back which seems to be a nice combo between bump absorbing and handling.

Matt

Title: Re: Tyre Pressure
Post by Octavian_P on Apr 20^th, 2006, 3:28pm

The front is less inflated for better direction. The back has bigger pressure because sometimes i go on longer outside town trips and load the boot up with lots of stuff.

Title: Re: Tyre Pressure
Post by jonnycab on Apr 20^th, 2006, 10:35pm

34 front & 34 back always feels good to me.

Title: Re: Tyre Pressure
Post by sector-9 on Apr 20^th, 2006, 10:42pm

[] IME manufacturer's tend to err on the soft side - presumably to give a more comfortable ride. My old Rover 414 specified about 28psi all round - only problem was that it wore the shoulders at that pressure. Eventually found 35psi to be about right for even wear.

Darren

Title: Re: Tyre Pressure
Post by Scorpioen84 on Apr 20^th, 2006, 11:43pm

Does`nt the load index of the tyres deside this.?
Normal cheap tyres have about 89...
My summer tyres have a higher loadindex and they look right, but winter tyres have 89, and they look "flatt"(er)... ::)

Just weeks before summertyres comes one again.! ;D
(yeye, you GB guys dont have this problem... ;) )

Title: Re: Tyre Pressure
Post by jonnycab on Apr 21^st, 2006, 12:59am

Isn't it great having the same weather all year round.

Title: Re: Tyre Pressure
Post by Paulus on Apr 21^st, 2006, 7:18am

Yeah...wet and miserable. :'(