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Old 30th April 2008, 19:58   #61
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Hi Guys,

I'am upsizing my Verna from stock 175/60R14 to 195/60R14. Please let me know what is the recommended air pressure for all 4 tries or what should be the pressure for the front and rear.

Regards,
Sajan
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Old 30th April 2008, 20:13   #62
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Maintain the recommended air pressure.
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Old 30th April 2008, 21:17   #63
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Quote:
Originally Posted by kpzen View Post
Maintain the recommended air pressure.
Hi Kpzen,

You mean stick to 30 all round or 28 all round??? Please advice.

Regards,
Sajan
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Old 1st May 2008, 01:33   #64
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For Verna, recommended is 30 with 2 ppl and
33 with more than 3 people or full load.

(ALL TYRES)
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Old 1st May 2008, 04:16   #65
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Not sure whether anyone else has expeirenced this, but whenever I fill air at places where they use hand meter to check the air pressure, it turns out to be a bumpy ride and on checking the pressure the very next day at electronic meter, it shows extra air pressure and needs to be reduced.
I know that lot of running & heat increases air pressure, but here I am talking about minimal driving between the checking of air pressure with manual meter and electronic meter.
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Old 1st May 2008, 12:36   #66
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^^ I too had a similar experience. From day one I got my vehicle, I used to check/fill air from a gas station nearby, where they got those analogue meter. And everyday on city roads I used to curse my decision to upgrade the tyres for the bumpy ride.
Yesterday morning I had a chance to fill air from a electronic gauge, and surprisingly all four tyres were showing somewhere around 10 PSI extra. And now with a 29 PSI on all tyres, I do get a much comfortable drive.
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Old 27th October 2008, 17:41   #67
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does it make a that much difference when check the air pressures using analogue and digital meters?
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Old 20th November 2008, 13:58   #68
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I have 205/40/R17 tires in my swift. What should be the air pressure. I maintain 28 psi. What is the difference between N20 air and ordinary air ?
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Old 20th August 2009, 10:45   #69
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I have a OHC 1.5 exi fitted with 205/60,R13 on the stock wheels done by the previous owner. what is best typre pressure i should be maintaining

Also do you think 205/60, R13 is the best replacement for the stock tyres
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Old 20th August 2009, 11:18   #70
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Take the pressure recommended by the manufacturer as a starting point. In the mid 70's AA - UK used to ecommend +2 psi for highway runs.

In general I will take the recommended figure as a starting point, and go up (and down) in 2 psi steps (max 2 steps either way) until I am happy. Always, check the tyres cold and use your own gauge.
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Old 20th August 2009, 11:25   #71
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Never go down on fast runs. Under-inflated tires can lead to standing wave formation, and this is the leading cause of blowouts.
so for highway runs always go 2 up on manufacturers recommendations.
At low speeds (below 100 for performance 180kmph rated tires) its no longer a big problem.
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Old 20th August 2009, 11:34   #72
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Its hard to trust the machines at the petrol bunks. They may not be properly caliberated. Also the oil firms make it mandatory that petrol bunks must have air and water facility for the cars ! In some petrol bunks, I dont even hear the motor run, to pump up the air. and in one particular petrol station, i tested it by checking twice.

1. First time, it showed 25 units in all tyres, that was topped to 30
2. without even cranking the car, i asked him to check again and it showed 25 again in all tyres !!

Ps. Petrol bunks now offer air for free. So to cut costs and save on electricity, they could be tampered. Just my view
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Old 20th August 2009, 14:15   #73
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Front engined FWD cars can load up the front tyre by around 30-40% more than the rear tyres.

So having equal pressure in all 4 doesn't make sense since the front tyres will flex more causing reduced traction and uneven/faster wear.

So you could try the recomended pressure for the rear tyres and increase it by 2 psi for the front. If the car feel twitchy, reduce the pressure evenly.

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Old 20th August 2009, 14:37   #74
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I had a problem of uneven wear on my Amby tyres, the front 2 tyres were very unevenly wearing, while some places had proper tread, other places went bald, and this too was not one sided, very confused, just changed the tyres, hope the new one's don't wear the same way.
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Old 20th August 2009, 16:16   #75
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isnt it true that highway driving on a normal sunny day tends to increase the air pressure in the tyres rather than otherwise?
At least I ve found this to be true.
but as far as possible I simply maintain a pressure of 32 PSI all around for my Scorpio and it is pretty comfortable. (I dont generally do high speeds of more than 100 -110 on the highways and in the city, the normal start stop traffic ensures that one can never hit more than 40kmph anyway).

Quote:
Originally Posted by sgiitk View Post
Take the pressure recommended by the manufacturer as a starting point. In the mid 70's AA - UK used to ecommend +2 psi for highway runs.

In general I will take the recommended figure as a starting point, and go up (and down) in 2 psi steps (max 2 steps either way) until I am happy. Always, check the tyres cold and use your own gauge.
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