Lancia Beta Forum
Technical stuff => Wheels/Tyres => Topic started by: Fulvia 3 on November 20, 2015, 12:19:41 PM
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Happy owner of a 1978 HPE 1600 since last month.
According to my Instruction Book, inflation pressure should be 24 psi !!
[27 psi when full loaded and 28 full loaded and constant high speed.]
According to a 1976 North American specs Instruction Book, inflation pressure is 28 psi (sounds logical).
For the first month I tried 27 psi and she drives nice. I cannot persuade myself to try 24 ....
What is your experience on the subject?
Thank you,
M
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Maybe 24 on the back when empty but seems too low.
What tyre size?
I run 185/65 14 with 29psi all round (in a spider) and it works well.
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My handbook says the same for the coupe - I now run 26 all round one or two up on standard tyres.
Mark
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What tyre size?
175/70-14
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Reckon 27 all round would be about right then.
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The pressures in the handbooks always seem to be on the low side by up to date standards.
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You have to take into consideration that every tyre manufacturer will have different sidewall construction and therefore different pressures. Tyres have changed a lot since those tyre placards where written. Look up the rule of four for tyre pressure, this works well. if you can't find it i will type it out for you.
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You have to take into consideration that every tyre manufacturer will have different sidewall construction and therefore different pressures. Tyres have changed a lot since those tyre placards where written. Look up the rule of four for tyre pressure, this works well. if you can't find it i will type it out for you.
Good call, I had forgotten about that. Here is what appears to be a good write up
http://cdn2.hubspot.net/hub/210453/file-20229690-pdf/docs/importance_of_optimum_tyre_pressure_and_temperature.pdf (http://cdn2.hubspot.net/hub/210453/file-20229690-pdf/docs/importance_of_optimum_tyre_pressure_and_temperature.pdf)
Peter