Motorcycle Club » Star 1100 Classic & Custom

tire pressure

15 posts from 8 voices
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  1. poppj
    #

    my 1100 classic grips the road so much better when i have 29 or 30 p.s.i. in my rear tire.... the ride is much better also....the rear tire should have 34 or 36 p.s.i...has any one else noticed......i am sure the tire will wear faster with less air...bob

  2. tunc
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    not sure bout runnin lower pressure but if that suits ya style go with it
    i try to run the tyre manufacturer recommendations
    just my opinion

  3. wzdar6
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    my 1100 classic grips the road so much better when i have 29 or 30 p.s.i. in my rear tire.... the ride is much better also....the rear tire should have 34 or 36 p.s.i...has any one else noticed......i am sure the tire will wear faster with less air...bob
    I'm sure I've run the rear that low but not on purpose. I just run 36 in the rear because that what recommended for 2-up riding. I guess running a lower pressure would give a wider contact patch but might also soften the sidewalls. I have nothing to support this just my thoughts. Do you mind giving your weight??

  4. poppj
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    my weight is 195....i ride solo 95% of the time....bob

  5. wzdar6
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    Thanks poppj you are about the same weight as me. I'd be curious to know about tire wear if you run that pressure for the life of the tire. Running 36 I only get about 6000 on the Dunlop 404s.

  6. MigejCojode
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    Watch the hard cornering with the pressure that low. You end up with more sidewall flex than I like with reduced pressure. You may wear tires prematurely as well. It's your ride tho, and if that pressure suits your style it shouldn't be a big issue.

  7. poppj
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    i run a dunlop d404 on the rear....i have to change the tire every 5000 miles but the handling and the grip are so much better...when i put 34 or 36 pounds in i feel every bump in the road....bob

  8. Jonezpoj
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    Proper inflation prevents heat which causes premature tire failure, I'd be vey carfull running that low.............

  9. wzdar6
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    poppj if they are only lasting 5000 miles I'd say the low pressure is hurting more than helping. If you are feeling every bump try adj. the shock setting. That made a huge difference in the ride on my Honda Shadow. On it I could run over a shadow in the road and it would rattle my teeth!! I just visited the Metzler site and did some reading. They say that low pressure causes flexing which causes heat, which could lead to tire failure, ill handling, and decrease in fuel mileage. I was surprised to see that with their tires they recommend 42-46 psi. Now I've got to visit Dunlop to see if they recommend the same as Yamaha.

  10. MorkKW
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    Hey, poppj.

    Please excuse me for being a little blunt, but I must be in this situation. I have to respectfully totally disagree with your thoughts about riding with your tires underinflated as they are. Handling, cornering, tracking and traction, all without a doubt, will suffer and become less precise when riding on improperly inflated tires...guaranteed. Also, your tires will run at a hotter temp and will become much more prone to experiencing problems, or complete failure. They also will wear out prematurely. Due to the safety aspect alone, it shouldn't be done.

    Now, as far as the improperly (low) inflated tires, of course they will be softer, but there's far too much you'd be sacrificing in order to have that cushy ride. If you want a nice ride, buy a Gold Wing. Otherwise, go with the recommended PSI, which on your bike with stock tires is 33 & 36.

    Check out some of the many available web sites on this topic and I am 100% certain you'll find similar info and responses there, as well.

    Be well and "stay safe."

    Morg - Key West

  11. wzdar6
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    poppj I went to Dunlop and found this. I think I need to go higher with my pressure according to Dunlop.

    For touring motorcycle loading, follow these general guidelines:
    Light loads-single rider with some luggage (up to 200 lb. total)-minimum tire pressure of 32 psi front and 36 psi rear must be maintained.
    Heavier loads-dual riding and/or luggage (from 200 lb. total up to maximum motorcycle capacity stated in the owner's manual)-pressure of 36 psi front and 40 psi rear must be maintained.
    Please Note:
    For any dual riding or fully loaded use, 40 psi must be maintained in all Dunlop rear tires fitted to touring motorcycles.

    In addition to following these recommendations, notice what your tires are telling you while you're riding. If your steering response is slow or mushy, or if cornering and braking response is heavy, there's a good chance your tires are underinflated. Vibration or wobble may signal that actual tire damage has occurred and failure is imminent!

    According to these guidelines I should run 40 psi most of the time! Wish I had read this before the last set. 36psi=6000 miles for me. 40psi=?? Thanks for the question. I've had fun researching. I don't agree with you either but you made me review my normal practice.

  12. poppj
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    v-star 20......let me know if your ride gets bumpy going up to 40 p.s.i.....i am boosting my p.s.i. up to 33....i will try that out in the next few days.....the weather is warming up in s.f. bay area....the best thing about this area is that i can ride almost 12 months out of the year and i am 15 minutes from pacific coast highway.....bob

  13. LiddleBen
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    I concur with Morg.Proper inflation is determined by engineers for optimum handling. I also run Dunlops I generally get about 7 or 8 thousand miles out of the rear. Tire wear depends on riding style. Hard acceleration even when not really evident scrubs a bunch of microns of rubber off the rear tire with every take off. I ride my bike like an old harley most of the time. That is to say get er rollin before you really open her up.Just my 2 cents.

  14. poppj
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    Thanks ben....sounds like good advise....bob

  15. chitter4
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    I tried running lower pressures on my 1100; they would be a little soft until they warmed up, I have seen close to 10 Lbs. difference from a cold tire say at 32# go to almost 40# after ridding for 50-100 miles. This happens because all compressed air has moisture in it, and water expands when heated; with the exception of breathing air (Fire Fighters and SCUBA divers will have access to this). I started using nitrogen and setting it at the recommended pressure. I don’t have enough miles with it to verify increased tire life, but it is a more consistent ride and you don’t get the hot tire pressure increase. I was told by the guy that Hydro tests our FF SCBA tanks that the breathing air will provide similar results as nitrogen.

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