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A number of Issues!
There are a number of issues - but first we need you to do some homework.
Your vehicle ought to have a placard that lists the original tire size and the proper pressure for that size. This is important because of this:
A 185R14 Load Range D has a load carrying capacity of 1874# at 65 psi.
An LT195/75R14 Load Range D has a load carrying capacity of 1710# at 65 psi - 160# less.
If you are using the tire at the same pressure, you are putting more stress on the tire and it is more likely to fail.
In some respects this answers your question, you need to use that +10 psi to get the load carrying capacity.
- BUT -
Is your tire a Load Range C? Then any increase in pressure over 50 psi doesn't increase the load carrying capacity.
HOWEVER, when I looked up LT195/75R14's I only found Load Range D's (except for the Standard Load Passenger car tires - and using those would be very dangerous as they do not have the load carrying capacity needed). So it's really important that we establish what you have. It will be written on the sidewall.
You will be looking for either a "Load Range" or "Standard Load". We need to know which you have.
We also need to know what the placard says for original tire size and inflation pressure.
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