If 36/38 works without excessive wear stick with it. I dropped my front to 36 and liked the feel but saw cupping in several hundred miles. 40 just doesn't feel right to me so I run as high as I can without it bothering me. Currently running 39 and hoping I just get used to the feel. I'm 230lb and often have another 200 on board.

Tires also matter. At 40 my old Metzeller was horrible but my new Avon tolerable. I don't recall my past bikes being as sensitive to pressure as the VTX so it may just be in my head. I look forward to hearing other opinions too. Thanks for bring up the topic.

 

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40 and 40,,,, check before every ride..... every ride.... 49 years of riding.
your tires will live longer..

I average 17,000 miles per set of tires...

 

Lower pressures may seem to ride smoother, but it will def. affect the mileage you get out of any tires. I run 40 front, 38 rear, but I'm darksided on the rear. 5'10", 215# mostly solo. I run Ride-On sealer/ balancer in my tires.

 

I was always 40/40 on my 1300C and now 40/42 on my darksided (and heavy) 1800R
Play up and down a pound, I doubt you'll see tremendous difference......
PS
Most gas station air pumps and certainly home guages read differently and not that accurately when you're talking about 1 PSI. Hot or cold tires make a differnece too

 

Completely agree! I only check my tires after my bike has been sitting overnight doing sure I'm checking cold PSI. I always thought keeping it at 40 PSI will wear them out faster. But some of the guys that I ride with swear by it. Obviously I'm concerned about safety but my primary concern is I want to insure longevity as I don't feel like buying new tires every season haha

 

40/40 is how I roll, Double Darkside!!!!!