lukecorcs Posted December 9, 2011 Share Posted December 9, 2011 Hi Raiders I have a question about tyre pressure's for your boat trailer. I am moving from Hobart to Sydney next weekend and I will driving up and I will be towing my boat. I have changed the bearings over, filled the buddies with new grease, checked the lights, I have a spare tyre and hub ready to go. The last thing I need to do is check the pressure in the tyres. I am unsure at what pressure I should be running in them for a drive like this. The boat weighs 120kg, the motor 85kg, and about 200kg worth of gear. I think all up on the trailer its between 450kg to 500kg. If anyone can help me out it would be much appreciated. Link to comment Share on other sites More sharing options...
Geoff Posted December 9, 2011 Share Posted December 9, 2011 What size are the rims / tyres ??? The tyres are normally stamped with the max pressure. This is not to say that is the correct running pressure but it is a guide. Subject to the above information , 35 - 40 psi should be OK. Keep in mind the pressure will build during a long road trip so perhaps start around 35 psi Geoff Link to comment Share on other sites More sharing options...
lukecorcs Posted December 10, 2011 Author Share Posted December 10, 2011 thanks. They are 155x13 I run my car tyres at 40psi but I wasnt sure about the boat trailer Link to comment Share on other sites More sharing options...
bennyk Posted December 10, 2011 Share Posted December 10, 2011 yes 40 psi will be ideal with the extra weight ul be loading the trailer with Link to comment Share on other sites More sharing options...
Alastair Posted December 12, 2011 Share Posted December 12, 2011 (edited) yes 40 psi will be ideal with the extra weight ul be loading the trailer with Once you get going at highway speeds, stop after a while, and check temperatures. If the tyres aren't more than just warm to the hand, you are all right. If they are too hot to hold your hand on, you would be well advised to bump up the pressures. You don't want to start with them low, " to let the pressure increase", as that will only happen with increased temp, and the temp and flexing is what will kill a tyre. regards Edited December 12, 2011 by Alastair Link to comment Share on other sites More sharing options...
BFB Posted December 12, 2011 Share Posted December 12, 2011 40 psi sounds to high to me for both the car and the trailer unless you are running light truck tyres. Best people to get advice from is a tyre place. If they are normal tyres 32psi will be plenty. Remember a car weights well over 1.5 tonnes and only has 32 psi tyre pressure without a problem. If you are running light truck tyres I think 40 psi will be too little. Link to comment Share on other sites More sharing options...
The Incredible Hull Posted December 12, 2011 Share Posted December 12, 2011 My car tyres are at 42psi, 235/45/R18. My trailer is at 35psi, it is 13inch also. Link to comment Share on other sites More sharing options...
lukecorcs Posted December 12, 2011 Author Share Posted December 12, 2011 Yes, the trailer has light truck tyers on it. I have been running 40psi in my car tyres for years. I currently have bridgestone a/t duelers on at the moment. They have done 30,000kms, and still look new. It got recommended to me to run that much, even I was a bit iffy at first, but the ride and handling is much better. But I was not sure abnout the boat trailer. It says on the side that the max load is 595kg's at 65psi...... Link to comment Share on other sites More sharing options...
Fisherman36 Posted December 12, 2011 Share Posted December 12, 2011 I have light truck tyres on mine. Got them replaced about a month ago. I have a 4.75m ally boat and the tyre guy said to use 40psi. Cheers Link to comment Share on other sites More sharing options...
lukecorcs Posted December 12, 2011 Author Share Posted December 12, 2011 Ok, thanks mate. I got told to only inflate them to 25 which I thought was strange, but 40 sounds alot better!!!!! Link to comment Share on other sites More sharing options...
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