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  1. #1
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    Too big for my tires

    I have noticed that my back tire gets depressed a considerable amount while I am riding. I am pretty big (6' 6", 280 lbs.).

    Is it possible to change out tires for a bigger tire and hence bigger tube to account for this without having to buy new rims?

    Any advice?

  2. #2
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    What tire, what exact tire size and what pressure are you running front and rear?

  3. #3
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    I have a Giant Escape bike with Giant flat-guard 700x32C with 65 psi right now which were what the bike came with.

  4. #4
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    You need to set it at 90 psi

    Sent from my LG-P769 using Tapatalk

  5. #5
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    Oh sorry, 65 psi is the max according to the tire but I guess I actually don't know what pressure I am using because my pump doesn't have a gauge

  6. #6
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    Yeah you need to get a gauge and tires need to be checked and likely aired up before each day of riding. A tire pressure app on Android says at that tire size and your weight you should be at 104 psi rear and 84 psi front.

    I'm about 260 and ran 65r and 55f on 40mm tires.

  7. #7
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    Should any tubes be able to go to that pressure? Are there tubes that can go higher

  8. #8
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    Tubes can go much higher than that. The tire is the limiting factor. Generally, if the tire can hold it, the tube plays along just fine.

    If your frame has sufficient clearance, then you can run a wider tire. A wider tire will allow you to run less pressure, which should make for a smoother ride.

  9. #9
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    You don't need to run that much pressure. I am 250# and run around 35# yes the tire is going to depress and widen out. This is actually what you want to happen for traction. The more the pressure increases the rougher the ride is going to be and the less your tire will conform to the imperfections in the trail causing traction loss.

  10. #10
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    32mm tires will pinch flat with low pressure and bang up his rims too.

  11. #11
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    Get a gauge and see what you are running. I very much doubt it is 65 if you see it deforming that much.

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