tire pressure/ long distance/ comfort
- Thread starter Ga129
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In your situation 35 psi is likely ideal. Or you could do 35 on front and 33 on back. Max pressure is rarely a good idea. 30 psi is the most comfortable/best for contact, 2-5 psi more with heavy loads should be fine.
If his stock tires had a different load rating than his current 91, wouldn't pressures need to be different and not necessarily because of a change in tire size [for the most part moving to a different size tire will change the load rating of course]? For example, say the stock placard was 89H, and his current is 91H. Both standard load tires, not extra load or reinforced.
Originally Posted By: ChrisW
If his stock tires had a different load rating than his current 91, wouldn't pressures need to be different and not necessarily because of a change in tire size [for the most part moving to a different size tire will change the load rating of course]? For example, say the stock placard was 89H, and his current is 91H. Both standard load tires, not extra load or reinforced.
It gets a bit complicated, but for practical purposes, only the tire size matters. The difference in load rating is more an artifact of the different ways the load rating is derived, but the actual load carrying capacity at a given inflation pressure is essentially the same.
- and a word of caution: When changing from P type tires to LT type tires, the above is NOT true.
If his stock tires had a different load rating than his current 91, wouldn't pressures need to be different and not necessarily because of a change in tire size [for the most part moving to a different size tire will change the load rating of course]? For example, say the stock placard was 89H, and his current is 91H. Both standard load tires, not extra load or reinforced.
It gets a bit complicated, but for practical purposes, only the tire size matters. The difference in load rating is more an artifact of the different ways the load rating is derived, but the actual load carrying capacity at a given inflation pressure is essentially the same.
- and a word of caution: When changing from P type tires to LT type tires, the above is NOT true.
I'm almost certain the old tires were also 91, all have been H/P tires
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