Tyre pressure

AndyMc.....

[quote=[Deleted User];72506222]What else would you rely on to prove that it was "fit for the use ..." etc?

The reality is that a reasoned informed decision like yours to vary the presssures slightly is never going to cause a problem.

However, our friend above who thinks it doesn't matter at all is deluding himself.[/QUOTE]

You don't have to.

Read the section of the con and use regs and tell us where you'd get 3 points and a fine.

By your logic any car with non standard wheels should fail an mot and the driver be prosecuted.

Car_54

It's nothing to do with non-standard, it's about inflation.

Any non-compliance with the C & U regs is an offence under section 41 etc of the Road Traffic Act 1988. People are regularly prosecuted for tyre offences.

AndyMc.....

[quote=[Deleted User];72507095]It's nothing to do with non-standard, it's about inflation.

Any non-compliance with the C & U regs is an offence under section 41 etc of the Road Traffic Act 1988. People are regularly prosecuted for tyre offences.[/QUOTE]

And nowhere does it state you have to use manufactures recommended pressures. But as usual you won't accept you're wrong.

Strider590

The figures in the cars handbook will generally be close enough regardless of the tyres fitted.

There are of course exceptions, my kitcar had to go from 18psi on Pirelli tyres, to 24psi on Toyo, because the new tyres were so much softer.

Apodemus

Strider590 wrote: »

The figures in the cars handbook will generally be close enough regardless of the tyres fitted.

There are of course exceptions, my kitcar had to go from 18psi on Pirelli tyres, to 24psi on Toyo, because the new tyres were so much softer.

Absolutely! The figures are always (and only) a best all-round starting point. Actual optimal and safest will vary with a whole range of factors, including temperature, altitude, weather conditions and road surface.

In the past, working overseas, I was forever pumping up tyres or letting air out, to cope with the varying needs of fast tarmac, dirt roads, deep bogs, and moves between sea level and 9,000 ft. Tyre pressures could be as low as 12psi and as high as 40psi to suit the conditions.

liltzero

My car tyres lose around 1-2 psi a week so I inflate mines to 40-45psi so I only need to re inflate mines once a month instead of every week

AndyMc.....

liltzero wrote: »

My car tyres lose around 1-2 psi a week so I inflate mines to 40-45psi so I only need to re inflate mines once a month instead of every week

I imagine you'd have a theoretical input on this topic.

Mercdriver

liltzero wrote: »

My car tyres lose around 1-2 psi a week so I inflate mines to 40-45psi so I only need to re inflate mines once a month instead of every week

These corgi toys are getting more and more realistic! Do they also have a corgi toy 1:43 scale air pump that works? It would be amazing if they do!

Jackmydad

There's a big difference between putting in the right pressure for the car / tyre combination for the use / conditions, and coming up with some random number to put in.
I'd have thought that a fair amount of over pressure would make the car skittish, particularly in the wet.

Marvel1

As already advised handbook and normal and full load.

I picked up my parents from the airport a few months ago, normal pressure on way up, then full load pressure on way back (note I did not put them up straight away, tyres already cooled down) , then when home back to normal.