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  1. #1
    Subjectively Insane MilitantPotato's Avatar
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    Big guy, new bike, need tire help.

    I'm 6'9" 265lbs. This week I picked up bikes for the whole family, my wife and i trade between towing a 3rd wheel and a trailer. I'm riding a Trek 7.3 FX, I noticed the tires compress a fair bit with just my weight, but with the 3rd wheel hooked up it seems to be a bit too much. Am I right about these tires not being suited for my weight?

    My current tires are the stock Bontrager Race Lite Hardcase, 700x32c; 60 tpi. I'm wanting to do some limestone trails, and the distances I commute are pretty short, so the road slicks are not something I need, unless they're fine for limestone trails, which I couldn't find anything about their suitability for those types of conditions.

    I'm not wanting the best of the best, and weight isn't much of an issue since I'm bringing plenty myself, but durability and puncture resistance are things I'd like.

    Thanks in advance for the help.

  2. #2
    Senior Member Milice's Avatar
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    Are you pumping the tires up before everyride? What kind of air preasure are you running?
    If it looks like the $3000 bikes but costs less than a decent helmet, it probably isn't a wise investment.


    http://keith-crossreference.blogspot.com/

  3. #3
    Senior Member
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    IMO, you will be more comfortable with a slightly larger tire.
    Look Continental City Ride in 37-622, they are a wider than the stock tire; yet a little skinny for
    their marked size. I have a set on my Trek 520, run them around 60 psi. I would usually suggest regular
    Schwalbe Marathon tires, especially for limestone trails; however I needed a set of tires earlier in
    the spring; could not wait for e-commerce to deliver the schwalbes; a LBS had the city rides; been
    fairly satisfied with them, plus they were fairly inexpensive.

  4. #4
    Neil_B
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    Quote Originally Posted by MilitantPotato View Post
    I'm 6'9" 265lbs. This week I picked up bikes for the whole family, my wife and i trade between towing a 3rd wheel and a trailer. I'm riding a Trek 7.3 FX, I noticed the tires compress a fair bit with just my weight, but with the 3rd wheel hooked up it seems to be a bit too much. Am I right about these tires not being suited for my weight?

    My current tires are the stock Bontrager Race Lite Hardcase, 700x32c; 60 tpi. I'm wanting to do some limestone trails, and the distances I commute are pretty short, so the road slicks are not something I need, unless they're fine for limestone trails, which I couldn't find anything about their suitability for those types of conditions.

    I'm not wanting the best of the best, and weight isn't much of an issue since I'm bringing plenty myself, but durability and puncture resistance are things I'd like.

    Thanks in advance for the help.
    Those tires should be fine. It would help if you had them properly inflated, however. They should be at 110.

    I ride those same tires on my 7.5fx. Here's the bike, the tires, my loaded trailer, and me on tour back in June.


  5. #5
    Subjectively Insane MilitantPotato's Avatar
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    Thanks for the replies, I'll call around to see if any LBS's have either of them in stock martia. Just before I road the tires had ~108 rear, ~106 front, I'll get it closer to 110. Hist, when ya say they'll be fine, was that for the light gravel trails and my weight, or just the weight?

  6. #6
    Senior Member sdastroguy's Avatar
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    You should be fine on the weight with those tires. I started on my 7.3 when I was 250 and had no problems at all once I cranked the pressure up to 110. As for light gravel trails I am currently running about 1/2 mile a day (trail construction project) on gravel with no problems at all. I don't know that I'd want to be running 10 miles of gravel however.

  7. #7
    Biscuit Boy Cosmoline's Avatar
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    Ditto on pressure. If you find spokes are getting knocked out very often, you could upgrade to a 36 count. But at your weight that shouldn't be a problem unless you're riding hard.
    ''On a bicycle you're not insulated. You're in contact with the landscape and all manner of people you'd never meet if you were in a car. A fat man on a bicycle is nobody's enemy.''

    Tom Vernon.

  8. #8
    Senior Member jaxgtr's Avatar
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    Moving to Clyde\Athena's
    Brian | 2013 Cannondale SuperSix 5 | 2014 Trek CrossRip Comp | 2003 Trek 7300
    Quote Originally Posted by AEO View Post
    you should learn to embrace change, and mock it's failings every step of the way.

  9. #9
    Neil_B
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    Quote Originally Posted by MilitantPotato View Post
    Thanks for the replies, I'll call around to see if any LBS's have either of them in stock martia. Just before I road the tires had ~108 rear, ~106 front, I'll get it closer to 110. Hist, when ya say they'll be fine, was that for the light gravel trails and my weight, or just the weight?
    In the photo, I'm at 275, riding on the gravel and dirt C & O Canal Towpath, and hauling 35 pounds in the trailer. Aside from the fact I was riding with a fractured rib, I had no trouble.

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