Photo_small
Reputation: 276

Bike tire inflation?

Question: I'm 6', 195. So big dude, but not huge. I run Mavic A317 rims with Continental tires which have a max PSI rating of 95. I usually inflate the tubes to about 100-110 PSI. Even at this increased pressure, when I am riding the bike my tires are not totally supporting my weight, in other words they do not stay tubular at the point in contact with the ground, but rather appear as if they have low pressure, which I guess for my ass they do.

On the rare occasions I've gone a little higher with the pressure, I typically blow the tube. What am I missing here? I can't imagine that my weight falls outside of the design parameters for bike tubes/tires/rims....do I need different tubes? Am I at risk of damaging the rims, which were expensive, either through over inflating or by running them low as described above? I just want a round tire under my ass!

Answer this question or share it with a smart friend:

Avatar_default
Type your answer here…

Asker's Favorite

  • 11443802614723fe566385e_small
    Reputation: 1178

    Tires are supposed to deform at the point of contact with the pavement. That's what gives them their grip; otherwise you'd be cornering on a point of contact about the size of a cockroach's butt.

    It sounds more like you don't like riding on the gooshier feeling tires. What width are your current tires? They sound like 28 or 32 mm based the max pressure.

    Despite the max pressure being a lawyer's number you don't really want to exceed it. With that in mind, get some less gooshy tires, assuming your rims can handle them. Road racing/training tires are awesome, and surprisingly flat resistant. 25 or 28 mm is a good width for Seattle, I like 25. I used a pair of Vittoria Diamante Pros for almost two years and probably 3k miles with one flat. Now I'm using some Vittoria Rubino Pro Techs which I like even more and are cheaper than the Diamantes.

    Share this answer with a friend: