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26x1.5 tires on 26x2.125 wheels

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26x1.5 tires on 26x2.125 wheels

Old 10-01-15, 09:54 AM
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krapyrubsnif
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26x1.5 tires on 26x2.125 wheels

I have an old raleigh cruiser, and was wondering if 26x1.5 tires will be OK on its 26x2.125 wheels. I found the bike and it had 2.125 mountain bike wheels that weren't right for the frame. I've consulted Brown's chart and am still a little confused and seeking advice and any suggestions!! Thanks! I'll generally be using the bike for commuting in the city.
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Old 10-01-15, 10:00 AM
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fietsbob 
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You are substituting Tires ... the Wheel is More than Just the Tire . Just do it and find Out ..
the Rim is not 2" wide ..

Measure the rim width itself , if it's less than the width data for the tire its probably OK
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Old 10-01-15, 05:29 PM
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There is a tutorial on rim sizes here Tire Sizing Systems It shows how to measure the rim width if you don't already know the size and if you scroll down to about 80% of the article you will come across the heading "width considerations" and a table showing which width tires will safely fit your rim. The conversion to inches is 25.4 mm = 1.00 inch
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Old 10-02-15, 10:30 AM
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The terms you are using are ambiguous and confusing, as is the situation.

You said that you have "26 x 2.15" wheels on your old Raleigh, but that they are not right for the frame. What isn't right? Do the brakes touch the rim correctly? Are the tires too wide? Are the wheels too tall (too big of diameter)? Are you looking for skinnier tires that would fit better?

Wheels have a diameter and rim width.
The diameter can be labeled as 26", 700C, 27", 26 x 1 3/8", 26 x 1 1/2",
or with ISO sizes like 559 (aka mountain bike 26") or 622 (aka road bike 700c).
Very old Raleighs used a couple uncommon rim diameters, so you need to confirm the diameter on your wheels.
The rim width isn't as important; you can fit wide tires on narrow rims.

Tires also have a diameter and width. The diameter needs to match the rim. 559 tires fit on 559 rims. 1.5" is 38 mm, or 2.125 is 54 mm. Both sizes are made in the 559 diameter, common to mountain bikes. The 38 mm tire won't be as tall but should generally roll a little faster than the 54 mm tire, which will have greater cushion and more traction.

Fitting smaller (35-40 mm) tires with a smooth tread to an old mountain bike is common for city riding. But make sure you get the correct diameter tires to match the rim diameter.
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Old 10-02-15, 02:24 PM
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More information needed

"wheels that weren't right for the frame" Please explain the problem. Is the problem that the wheels do not fit the spacing for the axle on the front fork and rear dropout? If it is old, it probably has rim brakes. Do the brake pads contact the rims correctly? Other than that, I really can't think of any. The 2.125 you mention is the width of the tire not of the wheel. I've rebuilt plenty of old bikes and never had a problem finding tires that fit if I paid attention to the diameter of the rim and the width of the rim when making a pick. If you want to do it on the cheap, check out the selection of tires at Niagara Cycle where you can get a pair of ultra cheap tires to try. Use them and then replace them the next time you need a new tire. Tires & Tubes - Tires - 26" - 26 x 1.00" - 1.75" - Niagara Cycle You might be surprised to find out that some of the inexpensive tires work just as well as a much more expensive tire. That's been my experience. I got 6,000 miles out of a set of Tioga 20" BMX tires ($14) that replaced a set of Schwalbe tires costing $75 each.
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Old 10-08-15, 09:59 AM
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Sorry, some misinformation there, meant to say the tires that were originally on the bike were mountain bike tires that were 26x2.125 and were unsuitable for the bike. My main question was if I were to put 1.5 tires on a 2.125 wheel would I encounter some problems... But i think i've got my answer, I'm gonna go for it!

Thanks.
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Old 10-08-15, 10:03 AM
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the wheel is not the tire , the rim width is what you need to measure .

take the tire Off and measure the inside of the rim width, then report back with those 2 Measurements.
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Old 10-08-15, 05:02 PM
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Originally Posted by krapyrubsnif View Post
Sorry, some misinformation there, meant to say the tires that were originally on the bike were mountain bike tires that were 26x2.125 and were unsuitable for the bike. My main question was if I were to put 1.5 tires on a 2.125 wheel would I encounter some problems... But i think i've got my answer, I'm gonna go for it!

Thanks.
Don't know why all the hassle here. 1.5s will work fine. No less than that, tho.
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