macafee2 Posted August 27, 2019 Share Posted August 27, 2019 (edited) seeing a post by kelper has made me try and work out the correct tyre pressure for my caravan. Here is a link to a web page explaining the formula https://caravanchronicles.com/guides/calculate-the-correct-tyre-pressure-for-your-caravan/ single axle mtplm = 1406kg max load per tyre 850kg max tyre pressure 65psi what I don't know is the actual weight of the caravan once loaded. If I use 1406kg, am I right in thinking the tyre pressure should be 53.7psi? If I run at 60psi, what effect will it have? I thought 60psi was in the handbook hence that's what I've run at. If I lower to 53.7 what will I notice? I know how the caravan handles at 60 psi, so am wary of reducing by 6 pound and it becoming less stable particularly as the caravans next run is 280 miles on mainly motorway. macafee2 handbook does indeed say 60psi Edited August 27, 2019 by macafee2 Quote Link to comment Share on other sites More sharing options...
joanie Posted August 27, 2019 Share Posted August 27, 2019 surely this has all been worked out by the experts who contributed to the handbook. Quote Link to comment Share on other sites More sharing options...
Guest Posted August 27, 2019 Share Posted August 27, 2019 Keep what works for you. The only suggestion is to look at the tyre wear and make sure it is even across the width. Or take the caravan to a public weighbridge which might cost £20. If you do you could weigh the car at the same time. Just have normal stuff in the car or take everything out and 'weigh' it back in later. It's best to do this with fuel tank full and no driver. I believe you get two weighings for the fee charged. You calculation is correct. Most caravans probably weigh more than the theoretical figure which, typically, does not include the gas bottle, water tank and any extras like motor movers. So your 60psi might be ideal. Quote Link to comment Share on other sites More sharing options...
CommanderDave Posted August 27, 2019 Share Posted August 27, 2019 https://www.tyresafe.org/check-your-pressures/caravan-pressure-calculator/ Dave Quote Jeep Commander 3. 0 V6 CRD Isuzu D- Max Utah Auto Elddis Crusader Storm 2000 Kgs, Unipart Royal Atlas Mover . Link to comment Share on other sites More sharing options...
macafee2 Posted August 27, 2019 Author Share Posted August 27, 2019 5 hours ago, kelper said: Keep what works for you. The only suggestion is to look at the tyre wear and make sure it is even across the width. Or take the caravan to a public weighbridge which might cost £20. If you do you could weigh the car at the same time. Just have normal stuff in the car or take everything out and 'weigh' it back in later. It's best to do this with fuel tank full and no driver. I believe you get two weighings for the fee charged. You calculation is correct. Most caravans probably weigh more than the theoretical figure which, typically, does not include the gas bottle, water tank and any extras like motor movers. So your 60psi might be ideal. thank you . called a local weighbridge and they charge £40 inc vat. If it were not for your post, I'd never have questioned the 60psi macafee2 Quote Link to comment Share on other sites More sharing options...
daveat92 Posted August 27, 2019 Share Posted August 27, 2019 Just beware putting more pressure into your tyre than it is designed to hold. A "Maximum Pressure" is moulded onto the sidewall somewhere. Quote Link to comment Share on other sites More sharing options...
AlanNancy Posted August 28, 2019 Share Posted August 28, 2019 15 hours ago, macafee2 said: seeing a post by kelper has made me try and work out the correct tyre pressure for my caravan. Here is a link to a web page explaining the formula https://caravanchronicles.com/guides/calculate-the-correct-tyre-pressure-for-your-caravan/ single axle mtplm = 1406kg max load per tyre 850kg max tyre pressure 65psi what I don't know is the actual weight of the caravan once loaded. If I use 1406kg, am I right in thinking the tyre pressure should be 53.7psi? If I run at 60psi, what effect will it have? I thought 60psi was in the handbook hence that's what I've run at. If I lower to 53.7 what will I notice? I know how the caravan handles at 60 psi, so am wary of reducing by 6 pound and it becoming less stable particularly as the caravans next run is 280 miles on mainly motorway. macafee2 handbook does indeed say 60psi 53.7 psi - good luck with setting that! Alan Quote Link to comment Share on other sites More sharing options...
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