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Thread: What size tire

  1. #1
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    What size tire

    I have a trek 7200 FX and I would like to explore the possibilites of changing the tire to a slicker tread and a tire with a smaller width. The bike is stock with Matrix 750 rims & Bontrager 700x35. What is the smallest width tire I can put on these rims? I am trying to avoid buying different rims.

    Monty

  2. #2
    Cars are evil mynameisnotdrew's Avatar
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    measure with calipers, and, voila!

    you can go a little fatter that the rim width, but not skinnier

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    Tyres have a designated size (700x28) but there can be a wide variation in the actual physical width of the tyre.
    For most hybrid style rims, 28mm is the narrowest that you should use, and it is a good size for fast general purpose riding.
    What type of riding do you do (fitness, commuting/utility, training, all weather?). How rough are the roads.

    I use 28mm on my all-round road bike/commuter/utility machine, but avoid the narrower types of this designation which are really 25mm in size.

  4. #4
    @#$% cars
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    Look for the sticker on your rims. It might give the actual measurement ... something like 622 x 20. My Fisher Hybrid came with Matrix 550 rims that size. Sheldon Brown (at http://www.sheldonbrown.com/tire-sizing.html) suggests 21 width rims could take a tire as small as 35mm and 19mm rims a tire as small as 28. Maybe a 20 could hold a 32mm tire safely.

    In any event you need to figure out your actual rim width to decide which tire you could try.

    Good Luck!

  5. #5
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    Who makes the Matrix 750 wheels?

  6. #6
    Senior Member craigrrr's Avatar
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    My wife bought a used 2014 Trek Verve 3 wsd and does not like the 700x35 tires can we put a wider tire on? if so what would the size be?

    here are the specs of her bike:

    Frame Trek Alpha Gold aluminum
    Fork SunTour NEX, 50mm-travel
    Rims/Wheels Bontrager 750
    Hubs Front: Formula aluminum; Rear: Shimano RM30
    Tires Bontrager H5 Hardcase, 700 x 35c
    Crankset SR SunTour NEX
    Chainrings 48/38/28
    Front Derailleur Shimano
    Rear Derailleur Shimano Alivio
    Rear Cogs Shimano, 8-speed: 12-32
    Shifters Shimano EF51
    Handlebars Bontrager
    Tape/Grips Bontrager Satellite Elite, lock-on ergonomic
    Stem Adjustable aluminum
    Brake Levers Shimano EF51
    Brakes Tektro linear-pull
    Pedals Dual-density platform
    Saddle Bontrager Boulevard WSD
    Seatpost Aluminum suspension

  7. #7
    aka Phil Jungels Wanderer's Avatar
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    Quote Originally Posted by craigrrr View Post
    My wife bought a used 2014 Trek Verve 3 wsd and does not like the 700x35 tires can we put a wider tire on? if so what would the size be?

    here are the specs of her bike:

    Frame Trek Alpha Gold aluminum
    Fork SunTour NEX, 50mm-travel
    Rims/Wheels Bontrager 750
    Hubs Front: Formula aluminum; Rear: Shimano RM30
    Tires Bontrager H5 Hardcase, 700 x 35c
    Crankset SR SunTour NEX
    Chainrings 48/38/28
    Front Derailleur Shimano
    Rear Derailleur Shimano Alivio
    Rear Cogs Shimano, 8-speed: 12-32
    Shifters Shimano EF51
    Handlebars Bontrager
    Tape/Grips Bontrager Satellite Elite, lock-on ergonomic
    Stem Adjustable aluminum
    Brake Levers Shimano EF51
    Brakes Tektro linear-pull
    Pedals Dual-density platform
    Saddle Bontrager Boulevard WSD
    Seatpost Aluminum suspension
    You will be limited by the space available around the tire itself - to any frame part. Best to ask your LBS what is the largest they can fit, and then decide from there.

    "Retirement is the best job I ever had!" Me, 2009


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  8. #8
    coprolite fietsbob's Avatar
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    Wow, a 10 year old Bump..

  9. #9
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    Quote Originally Posted by Devious Rhesus View Post
    Who makes the Matrix 750 wheels?
    Matrix is Trek's house brand rims. I don't know if Trek still makes them in-house or farms out the manufacture.

  10. #10
    Senior Member craigrrr's Avatar
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    Thanks Wanderer, I will chk with the LBS.

    Yeah, I did a search and the 10 yr thread popped up so there it is. hahaha

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