TR2/3/3A TR3 Tire pressure

[RonR]

Folks.

Moss Motors' parts manual list tire pressure of the original tire size (22 psi front 24 psi rear) as well as 165 x 15 radials (20 psi front, 32 psi rear.)
Clearly the proportions between the front and rear pressures is not consistent between the original tire size and the newer redial tire size.
Does anyone know where Moss came up with the pressure for radial tires?

What tire pressures are other using for 165 x 15 radial tires?

Thanks.
Ron

 

[CJD]

Call Moss??

If my ife (with a bad back) were riding in mine, I would lower the pressure to about 20psi, so smooth the ride...but it makes steering in parking lots a bear. Normally I ran 30-32 in both ends, as it made steering easier and more responsive.

 

[karls59tr]

Call Moss??

If my ife (with a bad back) were riding in mine, I would lower the pressure to about 20psi, so smooth the ride...but it makes steering in parking lots a bear. Normally I ran 30-32 in both ends, as it made steering easier and more responsive.

I run 30 psi in both ends as well.

 

[Sarastro]

Yes, I remember this from the TR4A I had back in the 60s. The tire pressure recommendations in the manual were really odd: something like 17 front and 24 rear for radials. I never heard the reason for that, but I imagine that the Michelin X radials (the only ones available at the time) could give you substantial oversteer if the front and rear pressures were equal. I don't think you can draw that conclusion today, as a lot of development work has gone into tires since then.

But the short answer is that the recommendation almost certainly came from the factory.