Tire Info
Need some help Please. Want to put new tires on my 25' kz trailer. Some stores say Radial, While some say Bias tires for trailers. The one I took off were only 2-ply tires. and thinking would like 7...
Forum Discussion
Robert812 wrote:
Hi all, got my new tires ST225/75r15d. they are rated for 65psi for weight of 2540 per tire x4. Now all I read is never fill to max. Mr Big-o tells me the tire is make for 65 psi max.(cold) so going down the heated highway my tires go to 72psi. I really don't know. now on my 2004 Lincoln Navigator they want P275/65R18 and the tire is 44psi max, so fill to 35. is suv tires not like the st tires? they make room for heat, but not the trailer. what is the thinking here?
thanks and happy camping.
Cars, pickup trucks and SUV's are done differently than trailers. Those vehicles (meaning not trailers) have a tire placard that can be trusted, so use the pressure listed there - assuming you are towing within the limitations published by the vehicle manufacturer.
Trailers on the other hand have demonstrated that the manufacturers aren't consistent and frequently under-tire the vehicle - which is why the standard answer is to inflate the tires to the max.
A better answer can be obtained by actually weighing the vehicle (in its worst possible configuration). What you are looking for is the worst possible tire load any tire will see, so that also means weighing it tire by tire (or compensating for the fact that you didn't).
