Tyres over inflated. Does it matter?

davetrace1

davetrace1

davetrace1

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So I was speaking to my father and we were on the subject of tyres. Now I do believe the average PSI for a car tyre is around 26 max? (For my dads tyre) but I just found out he runs all tyres at 60 PSI!! Now I've driven his car, it glides down the road lol, but the ride is so bumpy. Now driving at this PSI, is it dangerous as his max PSI is around 26?
 
There is no average tyre pressure, it's very car/axle specific!!!

There should be a sticker in the door shut or maybe the fuel filler cap stating the correct pressures...

Christ it is scary really :(
 
60 is very high, probably very close to the maximum the tyre is safely rated for, it will wear his tyres in the middle much faster, reduce grip and traction as said above, but on the plus side better effiecienciessss . but yea dial it down to 40psi max. 60psi is stupid high for a standard car.
 
Of course it's bloody dangerous. Get out there and let some air out, then educate him before he causes an accident.
 
On my car, the recommended inflation is between 36 and 39 if I recall well.

I had to inflate them a few weeks ago as they were very low (around 29 I think), and I was about to be involved in a crash. I had sun in my eyes and I was coming out of a roundabout and the car in front of me decided to stop (there was someone crossing). I had the sun in my eyes and I didn't see the brake lights (car was silver, so sun was reflecting a bit). Put my foot down on the brakes and stopped just in time.

I feel that if they were inflated, I would have hit the poor car in front of me!

In fact, after inflating them, I had to smash the brakes again. This time I didn't notice the pelican crossing turned orange (its a main road, where everyone is going 80 km/h, why would you do a pelican crossing there?!?!) and I smashed the brakes again. This time the stopping distance was MUCH longer (although I was going a bit faster). The tyres are inflated at around 42.

So yes, it makes a difference. And it can prevent a crash. Inflate them every 6 weeks, and keep within the range.
 
The__Malteser said:
On my car, the recommended inflation is between 36 and 39 if I recall well.

I had to inflate them a few weeks ago as they were very low (around 29 I think), and I was about to be involved in a crash. I had sun in my eyes and I was coming out of a roundabout and the car in front of me decided to stop (there was someone crossing). I had the sun in my eyes and I didn't see the brake lights (car was silver, so sun was reflecting a bit). Put my foot down on the brakes and stopped just in time.

I feel that if they were inflated, I would have hit the poor car in front of me!

In fact, after inflating them, I had to smash the brakes again. This time I didn't notice the pelican crossing turned orange (its a main road, where everyone is going 80 km/h, why would you do a pelican crossing there?!?!) and I smashed the brakes again. This time the stopping distance was MUCH longer (although I was going a bit faster). The tyres are inflated at around 42.

So yes, it makes a difference. And it can prevent a crash. Inflate them every 6 weeks, and keep within the range.
Click to expand...

Your scientific analysis is just flawless
 
No it doesn't matter. The tyre pressures in the handbook are just a bunch of random numbers made up my whoever can fit the most peanuts in their mouth.
 
Unfortunately people quite often read the maximum xx psi value on the sidewall of the tyre and believe that this is the correct pressure to keep their tyres inflated at.

Some idiotic advice in here, your '6 weeks' is another persons 2 weeks or someone elses 3 months. Check the sticker on the car or the cars handbook, check the pressures regularly and more frequently when covering long distances and cold weather conditions.
 
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