Originally Posted by hadd
Hi silverfox, It should say on the side of the tyre what pressure should go in there , my tyres take 60psi i always put 55psi in them
I have heard this said many times and it is not correct. The pressure on the side wall is a maximum pressure for the tyre inflation NOT the pressure the tyre is to be inflated to. (Though, in service it could be.) Your tyre wall will give you a maximum load which can be carried by the tyre at its maximum pressure at its rated speed. The actual pressure will depend on the load being carried by the tyre.
For info; if it's found that a tyre is running at its maximum load, it may be a good idea to check out its ply rating and possibly fit a higher ply-rated tyre since this will carry more load. The ply rating is just that, a rating, and it's quite possible to have a 6 or 8 ply rated tyre which only uses two actual plies in the side wall. It's a carry over system from when tyres did have extra plies as the rating increased.