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Discussion Starter #1
The owner manual for my 2004 VTX1300S says the rear tire pressure should be 33 lbs, or 36 with a load greater than 200 lbs. it has the stock Dunlop tires.

I am am replacing them with Michelin Commander II's. I cannot find any info on recommended pressures. I assume that may vary with the weight of the bike. Those tires have a max psi of 41 lbs indicated on the sidewalls.

My my first assumption is that the owner manual values are too low for these tires. Are there any official (or unofficial) recommendations?
 

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I have those tires and I keep them at 38 psi, rides good with no issues.
 

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The owner manual for my 2004 VTX1300S says the rear tire pressure should be 33 lbs, or 36 with a load greater than 200 lbs. it has the stock Dunlop tires.

I am am replacing them with Michelin Commander II's. I cannot find any info on recommended pressures. I assume that may vary with the weight of the bike. Those tires have a max psi of 41 lbs indicated on the sidewalls.

My my first assumption is that the owner manual values are too low for these tires. Are there any official (or unofficial) recommendations?
What are you basing your assumptions on??? Every tire, for every wheeled vehicle ever made, (yes wheel barrels too) has a MAX pressure. Every motorized vehicle has a recommended tire pressure.(ok probably not wheel barrels).;) It is not possible for the tire manufactures to list recommended pressures for each vehicle. Same thing goes for Vehicle manufacturers. You start with the vehicle manufacturer recommendation. If you don't like it you experiment up by going up (never lower) until you are happy with the ride. Never exceeding MAX pressure.
 

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Hondas recommended 33psi was to make the bike ride softer. Dunlop tire reps at the HOnda Homecoming said that 33psi was far too low and what was gained in ride comfort sacrificed tire wear and longevity. They wanted 38-40 psi for their tires to perform best. So 38-40 is where you want your pressures
 

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Metz site states on the X to run 38-40 front and 40-42 rear on their tires. Higher number is for when it is loaded. Honda just wants a smoother ride and dealer can sell more tires.

A lot of my riding is highway speed and many of them with the X fully loaded. I started running 38F & 40R and my mileage increased on the Metz by 21% front, 37% rear giving 14K front, 11k rear. The Commander IIs increase over stock is front has 15K and still going strong, rear increased by 75% over stock pressure with OEM tire giving me 14K on rear out of the Commander IIs. Of course the OEM Duns are almost crap anyway. I have not noticed mush if any change in ride and I think it handles better.

Years ago a very knowledgable tire person told me to run more than Vehicle manufacture recommended as they wanted a soft ride. Unless my cage is loaded I run about half way between vehicle recommended and max on side wall. I get excellent mileage.
 

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I run 40/40 no matter solo or two up.
 

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Discussion Starter #7
I did further research today. Michelin says to use the vehicle manufacturer's recommendations. That means 33F/33R or 33F/36R with a load. Guess that's where I will start.
 

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Michlen pilot active tire

I just changed my front tire out with 18,000 miles on it. We in the trike world have found that by using the Michlen Pilot Active tire made for the rear of the VTX and mounted in reverse on the front rim works really well with 42 psi. So far i have been real happy with this setup as replacing the front tire every 6000 miles was getting expensive. The tire comes from Motorcycle superstore at $109 shipped (130 70H 18) this is on a 2003 VTX.
safe riding,:pepper1::pepper1::pepper1:
 

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Discussion Starter #11
Chicago Spike, I surely understand why Honda would say one thing and the tire manufacturer would say something different. Each is trying to make their product look good.

Can you just confirm that the pressures you said are for a VTX1300? (I see in your signature that you are riding an 1800...)
 

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It's for any bike. And no they were not saying things just to make sales. Why would Dunlop want you to raise pressures so their tires last longer? That low pressure makes for quick tire degradation and poor tire wear like cupping in as little as 1000 miles. I talked with the Dunlop reps at Honda Homecoming, and that is exactly what they told me, Honda pressure is too low.
 

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Major consensus on the board is 38/40 front,40 rear....no matter the tire brand .....pay attention to board members Grasshopper...good luck
 

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tire pressure

I ride a 05 1300 and have the Dunlop on front and the Mich Comm II on the back.
I have run 40 front and 40 rear for a long time. I am not a little fella!
I get a lot of miles out of my tires and they ride great.
 

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Tire pressure recommendations are mfg-specific. So, check your Scout manual. But the overall logic in this thread still applies - don’t exceed tire sidewall spec for max pressure, but tinker with a lower range of pressures to get the right mix of handling and ride and longevity. My guess for the lighter Scout is to try 36-38 psig.
 
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