tyre pressures

[gazsen]

Hi,
The handbook for my Moggie 1000 states that the tyre pressure should be 26psi , I think, from memory. Was this due to the original tyres only being suitable for that pressure or was it suspension related? Am thinking harder tyre, more shocks to the suspension. My current tyres are very new [ bought car last June with them already fitted] and are of a higher pressure I`m sure. Could this be a problem?
Regards, Gary

[svenedin]

The original tyres were crossplies. Most people use radials these days.

Stephen

[geoberni]

I think people generally use around 28 with Radials.

But keep an eye on the tread wear as different makes will have an effect too.

What a lot of people forget about tyres is that the inflation pressure is whatever keeps the tyre, as fitted to that vehicle, in the correct shape for safe driving.
The Minor is a pretty light car, too high a pressure is simply going to reduce contact surface, wearing the centre of the tyre down and making it a more dangerous drive.

Some good info here about tyre safety in general:
https://www.tyresizecalculator.com/tyres/tyre-pressure

I have seen the question of tyre pressure come up on facebook and the stupidity of some people is still quite frightening.
I've seen it where some answers have been to use the pressure given on the tyre sidewall.
That's the Maximum Pressure, whatever the tyre is fitted to!

[liammonty]

I

I have seen the question of tyre pressure come up on facebook and the stupidity of some people is still quite frightening.
I've seen it where some answers have been to use the pressure given on the tyre sidewall.
That's the Maximum Pressure, whatever the tyre is fitted to!

You and me both - I also commented on that thread. It never ceases to amaze me how ignorant people state nonsense as though it's fact on social media.

Agree that 28 psi ish is a good starting point for radials on a Minor - that's what I run mine at.

[les]

Social media, everyone complains about it but they carry on using it !!

[svenedin]

28 psi all round is what I use on my radials and it seems fine.

[Chief]

I've seen it where some answers have been to use the pressure given on the tyre sidewall.
That's the Maximum Pressure, whatever the tyre is fitted to!

Explains those YouTube videos from garages showing customers cars with tires inflated to 100+ psi I guess.

[myoldjalopy]

I find 30psi all round is good. Anyone run on more than that?

[ManyMinors]

You shouldn't need to go much higher than the manufacturer recommended in the first place. Some experimentation is fine and different makes of tyres might run better at slightly different pressures but these are the recommended pressures copied from the original driver's handbook.

[geoberni]

You shouldn't need to go much higher than the manufacturer recommended in the first place. Some experimentation is fine and different makes of tyres might run better at slightly different pressures but these are the recommended pressures copied from the original driver's handbook.

Interesting that it doesn't appear to require any variation in pressures for fully laden with Radial Tyres.

I don't have Radial Tyres mentioned in my SII handbook (6th Ed) as it predates their arrival for general use.

[MikeNash]

I'm running on 25 psi all round on my 1963 1098cc Traveller which is equipped with 145R14 radials made by Camac and the wear seems even across each tyre.

[gazsen]

Thanks to everyone for their replies and advice.