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Tire pressure for 130 lb rider on wider wheels

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Tire pressure for 130 lb rider on wider wheels

Old 08-14-14, 09:54 AM
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blackbox
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Tire pressure for 130 lb rider on wider wheels

Hello B.F. citizens, I am trying to figure out the proper tire pressure for my road bike.

I understand that this topic has been beaten to death, and I have attempted to find this on my own, but ended up more confused then before. So, I come to the forum to hopefully get some assistance.

I am used to pumping 105psi front / 110psi rear, on my Fulcrum Racing T w/ 23mm tires.
This tire pressure I got from Vittoria’s website, using their online calculator.

Recently, I bought a set of Zipp 101 from the local classified, and they came with Gatorskin 23mm tires. When I used the same 105/110psi, they felt rock hard. I am sure I need to drop some psi, but how much?

I read the information given from HED, they recommends a reduce tire pressure of about 10% for wider rims.

I also found some formula for calculating tire pressure, but they all give me different results.

What should the proper tire pressure be?
Hope someone can enlighten me, below are some information on my setup.

Bike: CAAD10 (16lbs ish)
Rider: Me (130lb ish)

Wheels:
1) Fulcrum racing T w/ Vittoria Rubino pro slick 23mm (Came with the bike)
2) Zipp 101 w/ Continental Gatorskin 23mm (Tires came with the wheels, bought used)
3) Zipp 101 w/ Continental GP4000S II 25mm (Will replace with this, once the Gatorskin are done)


Thank you.
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Old 08-14-14, 10:00 AM
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Read the following with care:
November Bicycles: Race smart. - November Bicycles Blog - Full of air: tire*inflation

On a side note, I'm still playing with tire pressure on my Rail 34, but currently using 75 front and 80 Rear.
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Old 08-14-14, 10:24 AM
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Everyone will give you different numbers. Fwiw, I think people tend to over-inflate. I'm 200lbs and don't even inflate as high as you are. At your weight you could probably ride down around 80psi. Just experiment.
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Old 08-14-14, 11:49 AM
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I used to be 130 pounds but am around 140 right now. On regular width rims and 23mm Conti tires (GP4000 or Gatorskins), I usually run about 78/88 psi front/rear. Probably could go lower on the front.
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Old 08-14-14, 12:09 PM
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Old 08-14-14, 12:15 PM
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Gatorskins are quite stiff so that could be part of your problems too.
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Old 08-14-14, 12:18 PM
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I'm 150 and I run 80/85 on HED Ardennes and Bontrager RXL TLR
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Old 08-14-14, 12:36 PM
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Thank you for all the valuable responds, I think I will start with 80/85 and test from there.
Should be a major improvement from the 105/110.
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