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 Post subject: Re: Foot Pump
PostPosted: Mon Dec 03, 2018 5:16 pm 
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This is really strange. Set the fronts to 29 PSI and rears to 36 PSI according to foot pumps digital gauge then went away for 15 minutes, when I came back I connected the foot pump up again and it was saying 31 PSI front 38 PSI rear.

So I let some air out until it went down to correct values according to foot pumps digital gauge. Then used my old digital pressure gauge to check. Rear right was 35.5 PSI.

I had noticed before that the seperate digital pressure gauge read 1.5 PSI over when it was supposed to be accurate to within 0.5 PSI. I am now thinking that the seperate digital pressure gauge is more accurate than I thought and I should use that.

We're still only talking 2 PSI over even if the foot pumps gauge is initially over reading the pressures. I'll have to keep tabs on this.

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2007 Smart Fortwo Passion Coupe C451 Turbo 999cc 84bhp
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 Post subject: Re: Foot Pump
PostPosted: Tue Dec 04, 2018 2:59 pm 
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Well I have found out the best way to do this... firstly check tyre pressure with separate pressure gauge to get a base reading. Then connect foot pump and get a reading on that to see if it corresponds.

Then inflate tyre as necessary until it reads the desired pressure on the foot pump and disconnect. Finally check again with separate digital pressure gauge to see if it corresponds.

I did this just now and they all correspond, with the separate digital pressure gauge being 0.5 PSI under the foot pumps reading which I presume is very accurate.

If it ever wants me to overinflate by 2 PSI in future I'll notice it straight away.

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2007 Smart Fortwo Passion Coupe C451 Turbo 999cc 84bhp
Electric Windows
Air Conditioning
Smart Radio 9
Panoramic Sunroof
Luggage Compartment Cover
Softouch Automatic Gear Programme
Bodypanels & Tridion Cell in Silver Metallic
15" Alloy Wheels


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 Post subject: Re: Foot Pump
PostPosted: Tue Dec 04, 2018 8:20 pm 
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nlel wrote:
Well I have found out the best way to do this...



FINALLY!!!!! It’s olny taken you 6 years of constantly droning on about this, but I’m glad you have finally master tyre pressure!

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 Post subject: Re: Foot Pump
PostPosted: Wed Dec 05, 2018 6:37 am 
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wee mac wrote:


FINALLY!!!!! It’s olny taken you 6 years of constantly droning on about this, but I’m glad you have finally master tyre pressure!


No need to be so bitchy my man!

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2007 Smart Fortwo Passion Coupe C451 Turbo 999cc 84bhp
Electric Windows
Air Conditioning
Smart Radio 9
Panoramic Sunroof
Luggage Compartment Cover
Softouch Automatic Gear Programme
Bodypanels & Tridion Cell in Silver Metallic
15" Alloy Wheels


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