what’s the ideal psi to pump the tires on a shimano r500? I don’t know if it matters but it goes in a P2.
Thanks
If you weigh about 160 go with 110-115. Presuming a lot but on average, not a bad start.
thanks, i weigh 170 and i thought 100 was good enough. good thing i asked.
100 is good enough. If your roads are pretty rough, like chip seal, it may even be best. 115 may be just a tiny bit faster on smooth roads and will give just a bit more protection from bigger impacts like a pothole.
frame make doesn’t affect this
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What width tires?
It depends on the tire, but if the roads are really beaten up, with potholes, etc., 100 will make you more comfortable and lower Crr, but might increase your risk of pinch flats.
frame make doesn’t affect this
you sure?
i bet it might. probably too little to worry about though.
to the OP - it depends on rider weight and tire width, and road quality too. Some of the tire makers have charts with tire size vs weight to indicate optimum pressure. Zipp does this for their tires, so does Michelin.
the advice you have gotten so far is going to be about right for most 23c tires.
frame make doesn’t affect this
you sure?
i bet it might. probably too little to worry about though.
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exactly my point, all too often we see general maintenance questions being posted as if they were an issue specific to a brand. ie - repeated flats
I always like the “what wheel should I get? I am 6’2, 120lbs, I ride 21.3mph and I like red wine, and my mother is jewish, dad is catholic”
haha god damn the best wheel is pretty much the best wheel period!
realAlbertan wrote:
frame make doesn’t affect this
Jack Mott
you sure?
i bet it might.
What if both parents are catholic?
A friend of mine is about 110lbs dripping wet. She rides a P3. One time she drove to my place so we could ride together. She got her bike off the rack then the pump out of the car. She started pumping her tires up. I looked around, to see her balancing on the pump, bouncing up and down, to get more air in her tire. I asked why and she said “It says 180psi on the side, so I pump to 180psi”
I suggested 100-110 was probably more appropriate, but she argued. Whatever.
Well, we got back from the long ride on very rough roads and she was complaining about her girly bits hurting like hell. No DUH I said. I rode 100psi and had no issues.
She rides 180psi in the rain too, and can’t figure out why she crashes on corners ALL the time. She’s had the bike about 4 years now and she’s crashed on corners in the rain probably a dozen times already! The tire contact patch is smaller than her brain!
I always like the “what wheel should I get? I am 6’2, 120lbs, I ride 21.3mph and I like red wine, and my mother is jewish, dad is catholic”
haha god damn the best wheel is pretty much the best wheel period!
I’d argue that point.
Best training wheel? Best race wheel? Best value, fastest in a straight line, road bike use, tri wheel, best on hills, best crit wheel?
There is no ONE best wheel, but best for purpose and even then, best wheel for purpose, for the individual. For example, I ride the best wheels. Best for what I use them for, for the money I have available. Would I ride different wheels if someone else was paying? you bet! But I still ride the best wheels for me.
Hell, my H3’s wouldn’t even fit on my cruiser bike!
I’m having a difficult time understanding why a frame would make a difference in what tire pressure a person would use.
jaretj
Me too, that was a quote from Jack, I just wanted to save it.
Ummmm, well I am open to learning new things BUT there is no way that the frame cares about your tire pressure. However with a real stiff Al frame you may want to ride with a lower pressure for your comfort.
But start with what is printed on the side of the tire. I am 5’ 10", am old and fat at 190 and typically ride at 120 to 125 psi on my road bike but with 25mm touring tires on my commute bike I am at 80 psi.
So ultimately the answer is “it depends”.
I don’t think PSI is frame dependent, but to play devil’s advocate I guess you can argue a very slack bike with a long head tube would require additional PSI in the rear tire because more weight is over the back.
I can see how someone could argue that
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