Your Tyre Pressure and Fuel preference?

Tyre pressure - 0.1 higher than the sticker, as over inflation is safer than under inflation, and by the time I reach the garage the tyres have warmed up at least a little.
 
vorman said:
What tyre pressure do you use? The recommended pressure as per the sticker?
I ask this because as per my vehicle sticker, for eg. tyre pressure should be 2.1 bar for a relatively empty car.
Then there is an eco option of 2.4bar. What should I use? How will the ride be at 2.4?
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Why not just try it and see then you will have your own answer that the internet could never provide anyway.

I always use the higher of the values for fuel economy and longevity and quite honestly can't tell you it feels any different comfort wise.

Also, my vehicle has a little sticker on the fuel cap indicating that at first 'click' of the fuel pump, you should stop filling. The car still takes about 6 litres more past that first click. Is there any reason for this and am i doing much harm by filling till the top?
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It's to leave room for expansion under different temperate conditions. If it expands it will simply be pushed out the overflow and you'll end up losing money.

It has the benefit of more consistent fuel economy statistics if you track those.
 
Mine is inflated for a loaded vehicle, does give better mileage, but obviously there negatives (harsher ride, negative effect on stopping distance) should be kept in mind.

BP gives me the best mileage, but since no BP on way to or from work, it's not worth it going out of my way for one.
 
The door sticker says 2.1 bar for the front & 1.9 bar for the rear tyres (unladen). I inflate them to 2.3 bar front & 2.0 bar rear & find that gives better handling & steering - tyres have done 40,000 kms and still have about another 20,000 kms tread on them, based on current wear indications.

I try & use either Caltex or BP 95 unleaded as far as possible - I also fill it to the brim, as I usually drive 10-30 kms minimum after filling it, so expansion is not really an issue.
 
Some time ago I did some trials with regard to tyre pressures. From memory I inflated the tyres to 2,0 bar and did a trip of 400km. When I reached my destination I checked the pressures with the same gauge and the pressures had increased to 2,4 bar.
On the return trip I inflated the tyres to 2,4 bar and when i got home the pressure reading remained at 2,4 bar.

There was not a serious difference in altitude of the two places.

Another test was to check the oil level from 'cold' (before the commencement of the trip) and immediately on reaching the end stop.
I could not see any discernible difference so the old tip of checking oil level after the car has stood for some time is not valid; perhaps this only holds true if the oil has not reached operating temperature and therefore takes longer to drain back into the sump.
 
Whatever is recommended by the vehicle manufacturer to start with. Then adjust up or don depending on circumstances. Lower pressures make for a more comfortable ride in some vehicles, but NOT all, and will tend to increase tyre wear. the higher pressures are more fuel efficient.

And all that BS about how much to fill the tank is just that BS. I fill my tanks to the brim and have always done so.
 
Geoff.D said:
And all that BS about how much to fill the tank is just that BS. I fill my tanks to the brim and have always done so.
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I'll accept the fact that you can fill your fuel tank to the brim and there will no no side effects if you drive off and cover a fair distance.
However, I've seen it with my own eyes when a car's fuel tank was filled to the brim with fuel on the forecourt in Colesberg. The driver then parked the car in the sun while they all went for a meal. On getting back to the car they smelt petrol and there was clear evidence that it had come from the overflow pipe due to the LARGE stain on the concrete.
This was due to the expansion of petrol in the tank.

Similarly, a lpg cylinder is never filled to the brim to allow for expansion of the content due to heat of the sun on a hot day.
 
Geoff.D said:
And all that BS about how much to fill the tank is just that BS. I fill my tanks to the brim and have always done so.
Click to expand...

I'll accept the fact that you can fill your fuel tank to the brim and there will no no side effects if you drive off and cover a fair distance.
However, I've seen it with my own eyes when a car's fuel tank was filled to the brim with fuel on the forecourt in Colesberg. The driver then parked the car in the sun while they all went for a meal. On getting back to the car they smelt petrol and there was clear evidence that it had come from the overflow pipe due to the LARGE stain on the concrete.
This was due to the expansion of petrol in the tank.

Similarly, a lpg cylinder is never filled to the brim to allow for expansion of the content due to heat of the sun on a hot day.
 
stroller said:
I'll accept the fact that you can fill your fuel tank to the brim and there will no no side effects if you drive off and cover a fair distance.
However, I've seen it with my own eyes when a car's fuel tank was filled to the brim with fuel on the forecourt in Colesberg. The driver then parked the car in the sun while they all went for a meal. On getting back to the car they smelt petrol and there was clear evidence that it had come from the overflow pipe due to the LARGE stain on the concrete.
This was due to the expansion of petrol in the tank.

Similarly, a lpg cylinder is never filled to the brim to allow for expansion of the content due to heat of the sun on a hot day.
Click to expand...
Agreed. I've seen it on my own car previously. You could even hear it lol. Had a citi golf.
Reason for this thread is I've only got my car for about a month and first time I've seen that kind sticker on a petrol cap. Probably thought there's a bigger reason for not filling it to brim.

Also, I've noticed the petrol attendants fill as they wish. Started noticing that each fill up varied even though I usually fill at a certain point on the fuel gauge. Today I stood there and waited till it filled to the brim and noticed how much more it takes. I do track my consumption so it messes it up. I think they get tired to fill because it takes really long after the first click and airlock. So all my fill ups were not consistent and now I know why. Some stopped at first click others go on till they get tired probably.
 
0.5 bar isn't going to make a real difference in normal everyday driving. My one tyre has a slow puncture that I'm to lazy to fix so that one goes down to 1 bar regularly. On the others between 2 and 2.5. Who knows the gauges at the garage isn't always accurate.

And 93
 
rietrot said:
0.5 bar isn't going to make a real difference in normal everyday driving. My one tyre has a slow puncture that I'm to lazy to fix so that one goes down to 1 bar regularly. On the others between 2 and 2.5. Who knows the gauges at the garage isn't always accurate.

And 93
Click to expand...

That is why serious of roaders carry their own compressors and pressure gauges ......

I have not pumped tyres at a garage in about 15 years.....
 
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