That sounds like a err.... sound idea :-) Martin ----- Original Message ----- From: 'Robert Craig' via Quantum Owners Group To: [email protected] Sent: Sunday, March 31, 2019 6:57 PM Subject: Re: [Quantum Owners] Tyre pressures xtreme
Here is a trick I learnt years ago. Set the tyre pressures to what you think they might be and keep a note. Take the car for a spirited 10 minute run. Recheck the pressure, if they have risen by more than 2 psi, the pressures are too low. If they haven't risen, they are too high. Repeat the process until you get a rise of 1-2 psi after the run. This should be the optimum pressure. Bob Sent from my iPad On 31 Mar 2019, at 17:28, Susan and Martin Scott <[email protected]> wrote: Many years ago there was a similar question about Calvy Mitchel kit cars (I have one). I just set the pressure 'so the bulge looked correct' which happened to be 19psi (on my gauge). Someone in the club who worked at Dunlop put lots of numbers in a computer and came up with the same figure! One thing to bear in mind is that unless you have a very expensive calibrated gauge all you can hope for (as long as it gets repeatable results) is that it's the same pressure each time with that gauge. Whatever gauge you are using it's best to keep an eye on the tyres for any uneven wear, and (as long as the suspension is otherwise all ok ) adjust the tyre pressure accordingly. It may be for your gauge that a reading of 22 psi may be good. At lower pressures the gauge inaccuracies are also likely (than at higher pressures). It's best to get the pressures 'correct', but with most kit cars (even if the tyres wear quicker than expected) the low mileage will mean the tyres have to be changed before they are worn out anyway. Martin ----- Original Message ----- From: Clem Robertson To: [email protected] Sent: Sunday, March 31, 2019 4:38 PM Subject: Re: [Quantum Owners] Tyre pressures xtreme I agree with Steve. Depending on tyre size, brand and load rating you may have to run very low pressures to get grip. My original Bridgestone tyres seem to work best at around 19 psi but the present tyres seem to need lower pressures. Clem On Fri, 29 Mar 2019, 12:47 'Michael Aitken' via Quantum Owners Group, <[email protected]> wrote: Thanks Steve was thinking around that will try 18 on front and 20 on the back and see how I get on. -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. 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