[hostage]

So I got my g/f a used bike and the rear tire is loosing air, I noticed on the side of the wheel it had a couple of things.

40psi = off road
65psi = on road

26 x 1.50

I filled it up to 40psi and after about 20 mins of riding it was at 30psi. Later that night I filled it up to 65psi and road it around for a few minutes and when I got off I heard a "hissss".

I went to Wally World to look for a tire tube, since our LBS was closed for the night. They had two sizes of bike tubes for a 26" tire:

26 x 1.75+
and
26 x 1 3/8 and 1 1/4

I am wondering if I can use the 1 3/8 for her bike since 1/8 of an inch? Can I do this is, any safety concerns? We were planning on riding tomorrow morning, though if I need a specific 1.5" x 26, then I can wait.

Thanks in advanced!

Note it is an old mountain bike from the 80's, but it looks like tires are hybrid tires.

 

[Bent Wheel]

26x175 is your ticket. 1 1/4 - 1 3/8 are skinny tubes made for road bike tires.

 

[hostage]

Thanks, you were correct, I got curious and took out the tube and the 1.75"+ was the tube inside of it.

 

[Bent Wheel]

Thanks, you were correct, I got curious and took out the tube and the 1.75"+ was the tube inside of it.

Glad I could help. Put that tube in and go ridin. Have fun.:thumbsup:

 

[kapusta]

So I got my g/f a used bike and the rear tire is loosing air, I noticed on the side of the wheel it had a couple of things.

40psi = off road
65psi = on road

26 x 1.50

I filled it up to 40psi and after about 20 mins of riding it was at 30psi. Later that night I filled it up to 65psi and road it around for a few minutes and when I got off I heard a "hissss".

I went to Wally World to look for a tire tube, since our LBS was closed for the night. They had two sizes of bike tubes for a 26" tire:

26 x 1.75+
and
26 x 1 3/8 and 1 1/4

I am wondering if I can use the 1 3/8 for her bike since 1/8 of an inch? Can I do this is, any safety concerns? We were planning on riding tomorrow morning, though if I need a specific 1.5" x 26, then I can wait.

Thanks in advanced!

Note it is an old mountain bike from the 80's, but it looks like tires are hybrid tires.

I would use the smaller tube. I generally find it is easier to use a slightly smaller tube than a bigger tube. Tubes can stretch A LOT more than that.